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How Old is that Rock?
 
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Uranium-Lead Dating using Zircon Crystals.
Views: 18912 GNS Science
U-Pb Zircon Geochronology - for determining the age of a rock
 
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This video reports and demonstrates the laboratory procedures for determining the age of a rock using an example from Newfoundland.
How Scientists Found The Oldest Rock On Earth
 
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Scientists recently found the oldest thing on Earth, a zircon crystal, and it dates back to 4.4 billion years ago! Carbon dating is a helpful tool in order to date old things, but it's limited. Trace is joined by Elise Andrew from I F***king Love Science to talk about how exactly scientists were able to find the oldest thing on earth. Read More: Oldest Rock Speck Zeros In On Earth's Cooling Date http://news.discovery.com/earth/rocks-fossils/oldest-rock-speck-zeros-in-on-earths-cooling-date-140223.htm "The oldest remaining grain of early Earth's original solid rock crust has now been confirmed to be a 4.374-billion-year-old zircon crystal from Jack Hills, Australia." Uranium-Lead Dating http://geology.about.com/od/geotime_dating/a/uraniumlead.htm "Of all the isotopic dating methods in use today, the uranium-lead method is the oldest and, when done carefully, the most reliable. Unlike any other method, uranium-lead has a natural cross-check built into it that shows when nature has tampered with the evidence." Gem Found On Australian Sheep Ranch Is The Oldest Known Piece Of Earth, Scientists Find http://www.smh.com.au/technology/sci-tech/gem-found-on-australian-sheep-ranch-is-the-oldest-known-piece-of-earth-scientists-find-20140224-hvdkd.html "Scientists using two different age-determining techniques have shown that a tiny zircon crystal found on a sheep ranch in Western Australia is the oldest known piece of our planet, dating to 4.4 billion years ago." Confirmed: Oldest Fragment of Early Earth is 4.4 Billion Years Old http://www.livescience.com/43584-earth-oldest-rock-jack-hills-zircon.html "Ever heard this life advice? When solving a big problem seems impossible, break it into smaller steps." Where Are the Oldest Rocks on Earth Found? http://www.livescience.com/32763-where-are-the-oldest-rocks-on-earth-found.html "You don't need to go to a museum to find really, really old things. Ordinary rocks, for example, may be millions or billions of years old, and are free for the taking." Zircon Chronology: Dating the Oldest Material on Earth http://www.amnh.org/education/resources/rfl/web/essaybooks/earth/cs_zircon_chronolgy.html "What are the oldest rocks on Earth, and how did they form? The material that holds the greatest insight into these fundamental questions, because it can contain a record of some of the earliest history of the Earth, is a mineral named zircon." Atom Probe http://en.wikipedia.org/wiki/Atom_probe "The atom probe is a microscope used in material science that was invented in 1967 by Erwin Wilhelm Muller, J. A. Panitz, and S. Brooks McLane." Oldest Bit Of Crust Firms Up Idea Of A Cool Early Earth http://www.news.wisc.edu/22568 "A timeline of the history of our planet places the formation of the Jack Hills zircon and a 'cool early Earth' at 4.4 billion years." Hadean Age For A Post-Magma-Ocean Zircon Confirmed By Atom-Probe Tomography http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2075.html "The only physical evidence from the earliest phases of Earth's evolution comes from zircons, ancient mineral grains that can be dated using the U-Th-Pb geochronometer." Neodymium-142 Evidence For Hadean Mafic Crust http://www.sciencemag.org/content/321/5897/1828 "Neodymium-142 data for rocks from the Nuvvuagittuq greenstone belt in northern Quebec, Canada, show that some rock types have lower 142Nd/144Nd ratios than the terrestrrial standard." Oldest Known Rock on Earth Discovered http://www.nsf.gov/news/news_summ.jsp?org=NSF&cntn_id=112299&preview=false "Canadian bedrock more than 4 billion years old may be the oldest known section of the Earth's early crust." Follow Elise on Twitter: https://twitter.com/elise_andrew Watch Elise on I F***ING LOVE SCIENCE: http://www.youtube.com/channel/UCvOTgnW7oj9ZWDd2y5TEApw Watch More: How Carbon Dating Works http://www.youtube.com/watch?v=54e5Bz7m3do TestTube Wild Card http://testtube.com/iflscience/new-dinosaur How Did Life Begin? http://www.youtube.com/watch?v=ofFhHcvasHA Photo © John Valley/ University of Wisconsin ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube http://testtube.com/dnews Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Anthony Carboni on Twitter http://twitter.com/acarboni Laci Green on Twitter http://twitter.com/gogreen18 Trace Dominguez on Twitter http://twitter.com/trace501 DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com
Views: 252797 Seeker
Earth.Parts #18 - Absolute radiometric age dating of rocks and geologic materials
 
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The use of radiometric dating to determine the absolute age of rocks & geologic materials. Uranium-lead dating and zircons, other radiogenic elements useful in geochronology. If you like these science videos please like, subscribe & share!
Views: 5234 Earth.Parts
How To Date A Planet
 
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Support MinuteEarth on Patreon: https://goo.gl/ZVgLQZ And Subscribe! - http://www.youtube.com/user/minuteearth?sub_confirmation=1 Thanks to our Subbable supporter iFixit - http://www.ifixit.com/minuteearth ________________________ Illustration by Omkar Bhagat - https://www.youtube.com/user/c0defap Topic Idea by Meg Rosenburg Created by Henry Reich Production and Writing Team: Alex Reich, Peter Reich, Emily Elert, Ever Salazar, and Kate Yoshida Music by Nathaniel Schroeder: http://www.soundcloud.com/drschroeder ________________________ Free iTunes podcasts of MinuteEarth! - https://goo.gl/sfwS6n Facebook - http://facebook.com/minuteearth Twitter - http://twitter.com/MinuteEarth MinuteEarth provides an energetic and entertaining view of trends in earth's environment -- in just a few minutes! ________________________ References Bowring, S. 2014. Early earth: Closing the gap. Nature Geoscience, 7(3), 169-170. http://www.nature.com/ngeo/journal/v7/n3/full/ngeo2100.html O'Neil, J., Carlson, R. W., Francis, D., & Stevenson, R. K. (2008). Neodymium-142 evidence for Hadean mafic crust. Science, 321(5897), 1828-1831. http://courses.washington.edu/bangblue/ONeil-Oldest_Rock_4.28Ga-Sci08.pdf Valley, J. W. et al. 2014. Hadean age for a post-magma-ocean zircon confirmed by atom-probe tomography. Nature Geoscience, 7(3), 219-223. http://www.nature.com/ngeo/journal/v7/n3/abs/ngeo2075.html
Views: 1989152 MinuteEarth
Science Bulletins: Zircons—Time Capsules from the Early Earth
 
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Zircons are tiny crystals with a big story to tell. Some of these minerals are the oldest Earth materials ever discovered, and therefore yield clues about what the planet was like after it formed 4.5 billion years ago. In this new Science Bulletins video, travel to a remote island off Greenland's coast and a zircon-making lab in New York State to learn how geologists are using these time capsules to build new hypotheses about the early Earth. Science Bulletins is a production of the National Center for Science Literacy, Education, and Technology (NCSLET), part of the Department of Education at the American Museum of Natural History. Each Bulletin is produced by AMNHs curatorial and scientific staff and a team of video producers, designers, writers, and educators using state-of-the-art technologies such as high-definition video, data visualization, and 3-D computer graphics to present the latest research. For more information, visit http://www.amnh.org This video and all media incorporated herein (including text, images, and audio) are the property of the American Museum of Natural History or its licensors, all rights reserved. The Museum has made this video available for your personal, educational use. You may not use this video, or any part of it, for commercial purposes, nor may you reproduce, distribute, publish, prepare derivative works from, or publicly display it without the prior written consent of the Museum. © American Museum of Natural History, New York, NY
Detrital Zircon Dating Discussion in Secret Pass
 
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Detrital thermochronology is difficult to interpret, however, zircon and apatite sediments at the base of the mountains are capable of revealing information about the uplift history of rocks that have been eroded from the Ruby Mountains. To differentiate volcanic zircons from plutonic, double dating is used. In double dating a U-Pb date and U-Th annealing date are determined. If those dates are the same, the sample is volcanic because the crystallization and cooling were simultaneous.
Uranium-lead dating
 
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Views: 5314 Benjamin Shepler
Radioactive Dating 2 - Unit 2
 
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Made with Explain Everything
Views: 236 Mr. Sheldon Marsh
Sampling for OSL rock surface dating @ Gurgler Alm
 
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In August 2018 members from the Quaternary Research Group Innsbruck were sampling a crystalline head scarp in the Ötz valley (Austrian Alps) for rock surface exposure dating. Details here: https://quaternary.uibk.ac.at/Research/Current-Research/Luminescence-geochronology/OSL-surface-dating-of-rock-slope-failures.aspx
Views: 95 Mic Mey
Finding the geological age of a rock
 
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How can you tell the age of a rock using zircon grains? Geotop brings you into its geochronology laboratories to explain the uranium-lead dating method. www.geotop.ca
Views: 68 Geotop QC
U-Pb zircon geochronology by ID-TIMS: cleaning dissolution vessels
 
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Dr. Mark Schmitz shows how high-temperature dissolution vessels are cleaned prior to loading zircons for isotope dilution U-Pb geochronology.
Views: 485 TaterChron1
The Double-Edged Sword of High-Precision U-Pb Geochronology
 
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2010 AGU Fall Meetng - Bowen Lecture (1) The Double-Edged Sword of High-Precision U-Pb Geochronology or Be Careful What You Wish For Presented by S. A. Bowring, Earth, Atmosphere and Planetary Sciences, MIT
Views: 1336 AGU
U-Pb zircon geochronology by ID-TIMS: chemical abrasion & dissolution
 
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Dr. Mark Schmitz shows how zircon crystals are selected, chemically abraded, and dissolved for isotope dilution U-Pb geochronology.
Views: 1545 TaterChron1
Mark Harrison -  “Nuclear Geochronology and the Age of Earth”
 
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Stanford University APPLIED PHYSICS/PHYSICS COLLOQUIUM Tuesday, September 25, 2018 4:30 p.m. on campus in Hewlett Teaching Center, Rm. 200 Mark Harrison Distinguished Professor, Dept. of Earth, Planetary and Space Sciences, UCLA “Nuclear Geochronology and the Age of Earth” How Old Is Earth? Because Earth formed by protracted accretion of planetestimals, asking the age of our planet is in some ways akin to asking your friends theirs and in other ways different. While your pals are unlikely to date themselves from the moment of conception, we can use U-Pb dating to pinpoint the arrival of our solar system to the formation of the first solids in primitive meteorites that condensed from the circumstellar disk at 4,567.2±0.5 million years (Ma). The timing of volatile loss from parent bodies constrains Earth to have accreted most of its mass by 4,550 Ma from impactors broadly similar in composition to meteorites but, surprisingly, of a class not yet recognized. Whereas your pals almost certainly know the day they emerged from the womb, the continuous mobility of our planet has erased any vestige of its origin. Clues remain nonetheless. Sixty years ago, Clair Patterson argued that the similarity of Pb isotopes between terrestrial rocks and meteorites established Earth’s age as 4550 Ma. While his age was approximately correct, he was right for the wrong reason. Recently, two approaches have more clearly constrained an upper age bound to Earth formation; 182Hf-182W dating of core formation at ca. 4,540 Ma and 176Lu-176Hf data from terrestrial and lunar zircons as old as 4,380 Ma that require primary differentiation on both bodies to have ended by 4,510 Ma. The question of Earth’s age remains of societal import as about half the population of our country believes that it is less than 10,000 years old and arose in the fashion described in Genesis. But creationists are not alone in promulgating origin myths. In the absence of any empirical evidence, the scientific community long coalesced around the view that the first (~500 Ma) of Earth history saw a continuously molten surface disrupted only by extraterrestrial impacts. Those ancient zircons noted above are seriously challenging that longstanding paradigm.
Views: 119 Stanford Physics
U–Pb zircon dating Top # 5 Facts
 
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U–Pb zircon dating Top # 5 Facts
Views: 18 Abhishek Sawant
Helium Diffusion Rates in Zircon Crystals Prove a Young Earth - Creation Today Claims
 
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In 2003, the RATE (Radioisotopes and the Age of The Earth) study set out to prove that the half-lives of radioactive elements were drastically different in the past. They were attempting to invalidate the entire field of radiometric dating… one of science’s most relied-upon methods for determining the age of ancient materials. But did they prove this claim? Dr. Kevin R. Henke and Dr. Gary Loechelt have spent over a decade looking at the helium diffusion rates in zircon crystals studies and asking important questions. Dr. Kevin Henke and Dr. Gary Loechelt discuss creationist claims about helium diffusion rates https://www.youtube.com/watch?v=fXD33E9c7pk https://www.youtube.com/watch?v=HmhHLJaH-w0 Dr. Humphreys' Young-Earth Helium Diffusion "Dates" http://www.talkorigins.org/faqs/helium/zircons.html ❤︎² Logarithms... How? (mathbff) https://www.youtube.com/watch?v=ZIwmZ9m0byI Creation Today Episodes CT1-16 https://www.youtube.com/watch?v=jkvoX-Qqx4k CT2-04 https://www.youtube.com/watch?v=Ekm-7GcMg0k CT2-16 https://www.youtube.com/watch?v=6-DahmpVQvI Thanks to Dr. Kevin Henke, Dr. Gary Loechelt, Steve McRae and Shannon Q Follow me at http://www.patreon.com/paulogia http://www.twitter.com/paulogia0 http://www.facebook.com/paulogia0
Views: 23390 Paulogia
U-Pb zircon geochronology by ID-TIMS: column chemistry separation
 
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Dr. Mark Schmitz shows how U and Pb are separated from dissolved zircons for isotope dilution U-Pb geochronology.
Views: 1225 TaterChron1
Pastor Chui - Why Zircons are needed to date the age of a rock.flv
 
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This is a 4-minute sermon from science. It describes the reasons why zircons were used in dating the age of the earth. Zircons are zirconium silicates. When they crystallized from hot rock, they invariably picked up various variety of other elements, such as uranium, thorium, and lead. Since lead is more abundant than uranium, the crystal would have picked up more lead than uranium, making the entire dating to be inaccurate. Also, using ion probe analysis, one finds the uranium, thorium, and lead atoms are separated by certain distances, indicating that they were incorporated into the crystal during crystallization, instead of products of decay. This fact would invalidate all zircon dates. Also, isochrons can be interpreted using models of mixing different amount of Pb204, Pb206, and Pb207. High temperatures during asteroid entry into the earth's atmosphere would have melted most minerals, allowing them to redistribute inside the meteorite, making isochron dating to be spurious. Thank God for the information.
Views: 256 Christopher Chui
Nu LA-ICPMS - detrital zircon age reduction from raw U-Pb data
 
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This video shows how to reduce raw data off Nu laser ablation inductively coupled mass spectrometer in Excel in order to get a U-Pb age. For all inquiries and these procedures in writing please visit our webpage: https://sites.google.com/a/laserchron.org/laserchron/
Views: 159 Mineral Separation
Uranium - Lead and Potassium - Argon Dating
 
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Dating of very old specimens via two different radioisotopes and their decay.
Views: 3128 Ed. Rowett
Radiometric Dating is Flawed!! Really?? How Old IS the Earth?
 
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THIS VIDEO IS LACED WITH SARCASM (to those who have difficulty sensing it). Scientists admit that radiometric dating, one of the fundamental techniques used to show the earth is billions of years old is flawed!!! The earth is not 4.55 billion years old. Watch and find out just how old it really is. Of course, scientists are always refining their techniques, it's part of of science works. Creationists have pointed to a number of "results" from radiometric dating that prove it doesn't work. Here I go over all the reasons why. Why is there Carbon-14 in some coal. Why did Potassium-Argon dating of the 1980 eruption of Mount Saint Helens give ages on the order of hundreds of thousands of years. To download this video, copyright free, please go to: http://www.mediafire.com/?yytzwtrzmwh To download the scientific paper featured in this video please go to: http://www.mediafire.com/?mhljmmzn3m2 If you wish to translate the subtitles please download them from here: http://www.mediafire.com/?0mynummmyz0 And remember to always, Think about it.
Views: 110867 cdk007
Top 10 Methods to Find the Age of Rocks and Fossils (Part 1)
 
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In this video I summarize 5 of the top 10 most common methods of finding the age of rocks and fossils, these include 1) Radiocarbon dating or C-14 dating; 2) K-Ar Dating; 3) Ar-Ar Dating; 4) Zircon Fission track dating; 5) Uranium-Lead Dating. Stay tuned for part 2 next week. Interested in supporting my YouTube Channel: https://www.patreon.com/user?u=9235837 For further information about the instructor: http://www.benjamin-burger.org To learn more about the geology department at USU: http://geology.usu.edu To learn more about the Uintah Basin campus of USU: http://uintahbasin.usu.edu
Views: 1081 Benjamin Burger
Using Zircon Chemistry as a Discriminating Tool for Geodynamical Context of Magma Formation
 
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2014 Fall Meeting Section: Volcanology, Geochemistry, Petrology Session: Using Sediments to Understand the Evolution of the Earth II Title: Using Zircon Chemistry as a Discriminating Tool for Geodynamical Context of Magma Formation Authors: Bollinger, C, IUEM Institut Universitaire Européen de la Mer, Plouzané, France Guillong, M, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland Vonlanthen, P, Institut des sciences de la Terre, University of Lausanne, Lausanne, Switzerland Chazot, G, IUEM Institut Universitaire Européen de la Mer, Plouzané, France Bachmann, O, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland Langlade, J, IUEM Institut Universitaire Européen de la Mer, Plouzané, France Rouget, M L, IUEM Institut Universitaire Européen de la Mer, Plouzané, France Bussien Grosjean, D, IUEM Institut Universitaire Européen de la Mer, Plouzané, France Liorzou, C, IUEM Institut Universitaire Européen de la Mer, Plouzané, France Abstract: Zircon, a widespread accessory mineral in rocks of felsic composition, is frequently used in various disciplines of geosciences as a petrogenetic, geochronologic and geothermometric tool. It can survive metamorphism and partial melting, and it is chemically and physically very resistant to erosion. As a consequence, zircon is very common in sedimentary rocks of terrigenous origin. Over the last decades, several studies have focused on detrital zircon grains to track the eroded source of sedimentary rocks. However, despite the fact that zircon chemistry allows its source rock to be dated and characterized in terms of crystallization temperature and composition, the detailed geodynamical context of the source rock is still very difficult to reconstruct. The goal of this study is to infer the geodynamical crystallization environment of zircon from its geochemical signature. Differentiated igneous rocks from several geodynamic environments, including intraplate, active margin, ocean rift, and pre-, syn-, and post-collisional settings, were sampled, and zircon grains were separated, mounted in epoxy, and imaged by cathodoluminescence. The trace element signature of zircon was determined using (in-situ) laser ablation-high-resolution-inductively coupled plasma-mass spectrometry (LA-HR-ICP-MS). Zircons non representative of original magmatic values (LaN(ormalised) > 1, PrN > 10 and SmN/LaN < 10) had been disregarded. Y and Yb seem to behave similarly if we compare zircons from all our samples. But preliminary observation of trace elements such as Nb, Ta, and Th plotted against rare earth elements allows us to characterise and discriminate several geodynamic environments. More particularly, Y/Th ratio and Eu anomaly seem to be significant to distinguish ocean rift and intraplate settings, thus confirming the geochemical control of the zircon crystallisation. Cite as: Author(s) (2014), Title, Abstract V54C-05 presented at 2014 Fall Meeting, AGU, San Francisco, Calif., 15-19 Dec. Learn more here: http://abstractsearch.agu.org/meetings/2014/FM/V54C-05
Views: 619 AGU
BBC Men of Rock 1 of 3 Deep Time
 
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BBC Men of Rock 1 of 3 Deep Time - Iain Stewart tells the story of James Hutton, the founding father of geology. Uploaded for educational purposes, all material belongs to the BBC No copyright intended
Views: 412642 xMaTx4
Zircon and ancient rocks
 
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Zircon and ancient rocks
Views: 201 Virtual Field Trips
Detrital Zircons of the Jack Hills, Western Australia… - A. Brenner - 1/12/17
 
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Alec Brenner, G. Edward Bryan Memorial SURF Fellow Full Presentation Title = Detrital Zircons of the Jack Hills, Western Australia: Rock Magnetic and Mineralogical Assessments 2016 Doris S. Perpall SURF Speaking Competition Final Round Produced in association with Caltech Academic Media Technologies. ©2017 California Institute of Technology
Views: 936 caltech
[Wikipedia] Detrital zircon geochronology
 
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Detrital zircon geochronology is the science of analyzing the age of zircons deposited within a specific sedimentary unit by examining their inherent radioisotopes, most commonly the uranium–lead ratio. The chemical name of zircon is zirconium silicate and its corresponding chemical formula is Zr SiO4. Zircon is a common accessory or trace mineral constituent of most granite and felsic igneous rocks. Due to its hardness, durability and chemical inertness, zircon persists in sedimentary deposits and is a common constituent of most sands. Zircons contain trace amounts of uranium and thorium and can be dated using several modern analytical techniques. It has become increasingly popular in geological studies from the 2000s mainly due to the advancement in radiometric dating techniques. Detrital zircon age data can be used to constrain the maximum depositional age, determine provenance, and reconstruct the tectonic setting on a regional scale. https://en.wikipedia.org/wiki/Detrital_zircon_geochronology Please support this channel and help me upload more videos. Become one of my Patreons at https://www.patreon.com/user?u=3823907
Views: 44 WikiTubia
Helium is a problem for the radiometric dating of rocks
 
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Helium gas is renowned for its ability to diffuse through materials quickly. Why is it, then, that we find an abundance of helium in certain rock crystals—that it has not managed to escape from them? This has significant implications for the dating of rocks using radioactive decay. That’s because helium is formed when some radioisotopes decay, and therefore lots of helium suggests lots of decay has occurred. Moreover, if lots of decay has occurred, it also suggests that the rock is very old. However, Nuclear Physicist Dr Russell Humphreys realised that lots of helium trapped in the rock crystals that had not had time to diffuse out means that the rocks were actually young. Dr Humphreys concluded that nuclear decay rates must have been dramatically faster in the recent past, and that is why rocks that are actually only thousands of years old are commonly wrongly dated using radioisotope decay as millions or billions of years old. To find out more from Creation Ministries International visit our website CREATION.com Related Articles: Radiometric dating breakthrough http://creation.com/radiometric-dating-breakthroughs Argon diffusion data support RATE's 6,000-year helium age of the earth http://creation.com/argon-diffusion-age Related Products: Evolution's Achilles Heels http://creation.com/s/10-2-640 Christianity for Skeptics http://creation.com/s/10-2-585 Creation Answers Book http://creation.com/s/10-2-505 Creation Magazine Subscription http://creation.com/mag
Views: 1878 CMIcreationstation
Minsep - Quarrying rock for a zircon standard
 
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This video gives a summary of sampling a rock outcrop for enough igneous zircon for a standard in our geochronology research. For all inquiries and these procedures in writing please visit our webpage: https://sites.google.com/a/laserchron.org/laserchron/
Views: 19 Mineral Separation
Earth.Parts #17 - Absolute age dating, geochronology & pennies
 
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Geochronology & absolute age-dating of rocks and natural materials, radioactive decay and radiometric age-dating
Views: 2360 Earth.Parts
Dating Archean-Proterozoic Rocks: Part 1
 
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First part of getting rocks ready for zircon daring.
Views: 74 Steven Baumann
May Wuebber 2013 Australia Zapping Zircons
 
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On this day at the JCU Earth and Environmental Sciences lab, Jeff, Levi (a JCU honors student) and I zapped over 100 zircons through laser ablation. This laser measures the mass of each element inside the zircon, giving an age through Ur-Pb radiometric dating. After doing this for numerous hours, you get a bit punchy...
Views: 162 Tiffany May
What is THERMOCHRONOLOGY? What does THERMOCHRONOLOGY mean? THERMOCHRONOLOGY meaning
 
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What is THERMOCHRONOLOGY? What does THERMOCHRONOLOGY mean? THERMOCHRONOLOGY meaning - THERMOCHRONOLOGY definition - THERMOCHRONOLOGY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Thermochronology is the study of the thermal evolution of a region of a planet. Thermochronologists use radiometric dating along with the closure temperatures that represent the temperature of the mineral being studied at the time given by the date recorded, to understand the thermal history of a specific rock, mineral, or geologic unit. It is a subfield within geology, and is closely associated with geochronology. A typical thermochronological study will involve the dates of a number of rock samples from different areas in a region, often from a vertical transect along a steep canyon, cliff face, or slope. These samples are then dated. With some knowledge of the subsurface thermal structure, these dates are translated into depths and times at which that particular sample was at the mineral's closure temperature. If the rock is today at the surface, this process gives the exhumation rate of the rock. Common isotopic systems used for thermochronology include fission track dating in zircon and apatite, potassium-argon and argon-argon dating in apatite, uranium-thorium-helium dating in zircon and apatite, and 4He/3He dating.
Views: 134 The Audiopedia
Top 10 Methods to Find the Age of Rocks and Fossils (Part 2)
 
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In this video I summarize 5 of the top 10 most common methods of finding the age of rocks and fossils, these include 1) Radiocarbon dating or C-14 dating; 2) K-Ar Dating; 3) Ar-Ar Dating; 4) Zircon Fission track dating; 5) Uranium-Lead Dating. Stay tuned for part 2 next week. Interested in supporting my YouTube Channel: https://www.patreon.com/user?u=9235837 For further information about the instructor: http://www.benjamin-burger.org To learn more about the geology department at USU: http://geology.usu.edu To learn more about the Uintah Basin campus of USU: http://uintahbasin.usu.edu
Views: 467 Benjamin Burger
The Geology of Little Black Mountain -- Dr. Rolfe Erickson
 
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Retired Sonoma State University geology professor Dr. Rolfe Erickson and Sonoma Land Trust stewardship staff hiked the slopes of Little Black Mountain in fall, 2010 to collect rock specimens for zircon dating. According to Dr. Erickson, "Little Black Mountain is a small magmatic body of solidified rhyolite that by previous dating methods was considered to be 100 million years old — much younger than surrounding Franciscan metamorphic rocks thought to be about 160 million years old by fossil dates. Recent zircon dating shows the Franciscan to be 83 million years old, and the Little Black Mountain rhyolite date is now too old for the body to be a simple intrusion. We will use the new zircon dates to further resolve this conflict. Another feature of this study is very accurate chemical and mineralogical analysis to characterize this type of rock more precisely." Dr. Erickson has studied the geology of the Cazadero, California area for over four decades and produced multiple papers on the topic.
Views: 651 SonomaLandTrust
LogiCON 2013: Radiometric Dating: Hans Machel
 
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Radiometric Dating: How it works, & Why It Matters. Radiometric dating is one branch of geochronology, which is the science of determining the ages of rocks and fossils. While the other branches yield only relateve ages (younger or older), radiometric dating is an 'isotopic clock' that can yield absolute ages, i.e., that something is so-and-so many years old. Over the last 100 years radiometric dating has helped to revolutionize our understanding of planetary evolution, the origin and evolution of life on Earth, and exploration for mineral and energy resources, and more. The method has even been applied to non-geological materials, such as the Shroud of Turin. This talk will explain in laymen's terms how radiometic dating works and provide a few examples of application. LogiCON website: http://www.logicon.ca/ Recorded on Canon A2000 pocket camera.
Views: 388 FloatingJetsam
What is FISSION TRACK DATING? What does FISSION TRACK DATING mean? FISSION TRACK DATING meaning
 
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What is FISSION TRACK DATING? What does FISSION TRACK DATING mean? FISSION TRACK DATING meaning - FISSION TRACK DATING definition - FISSION TRACK DATING explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Fission track dating is a radiometric dating technique based on analyses of the damage trails, or tracks, left by fission fragments in certain uranium-bearing minerals and glasses. Fission-track dating is a relatively simple method of radiometric dating that has made a significant impact on understanding the thermal history of continental crust, the timing of volcanic events, and the source and age of different archeological artifacts. The method involves using the number of fission events produced from the spontaneous decay of uranium-238 in common accessory minerals to date the time of rock cooling below closure temperature. Fission tracks are sensitive to heat, and therefore the technique is useful at unraveling the thermal evolution of rocks and minerals. Most current research using fission tracks is aimed at: a) understanding the evolution of mountain belts; b) determining the source or provenance of sediments; c) studying the thermal evolution of basins; d) determining the age of poorly dated strata; and e) dating and provenance determination of archeological artifacts. Unlike other isotopic dating methods, the "daughter" in fission track dating is an effect in the crystal rather than a daughter isotope. Uranium-238 undergoes spontaneous fission decay at a known rate, and it is the only isotope with a decay rate that is relevant to the significant production of natural fission tracks; other isotopes have fission decay rates too slow to be of consequence. The fragments emitted by this fission process leave trails of damage (fossil tracks or ion tracks) in the crystal structure of the mineral that contains the uranium. The process of track production is essentially the same by which swift heavy ions produce ion tracks. Chemical etching of polished internal surfaces of these minerals reveals spontaneous fission tracks, and the track density can be determined. Because etched tracks are relatively large (in the range 1 to 15 micrometres), counting can be done by optical microscopy, although other imaging techniques are used. The density of fossil tracks correlates with the cooling age of the sample and with uranium content, which needs to be determined independently. To determine the uranium content, several methods have been used. One method is by neutron irradiation, where the sample is irradiated with thermal neutrons in a nuclear reactor, with an external detector, such as mica, affixed to the grain surface. The neutron irradiation induces fission of uranium-235 in the sample, and the resulting induced tracks are used to determine the uranium content of the sample because the 235U:238U ratio is well known and assumed constant in nature. To determine the number of induced fission events that occurred during neutron irradiation an external detector is attached to the sample and both sample and detector are simultaneously irradiated by thermal neutrons. The external detector is typically a low-uranium mica flake, but plastics such as CR-39 have also been used. The resulting induced fission of the uranium-235 in the sample creates induced tracks in the overlying external detector, which are later revealed by chemical etching. The ratio of spontaneous to induced tracks is proportional to the age. Another method of determining uranium concentration is through LA-ICPMS, a technique where the crystal is hit with a laser beam and ablated, and then the material is passed through a mass spectrometer........
Views: 1220 The Audiopedia
Ages of Earth - Zircon
 
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Track 1 from Ages of Earth's "Smother EP" Release date 21st February, 2015 Produced by Jeff Lester, Shift Studios
Views: 13 Aaron Wright
Watersmeet Gneiss
 
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Gneiss is a high grade metamorphic formed by the deep burial and heating of its pre-existing parent rock. This specimen of the Watersmeet Gneiss is from bedrock exposures north of the town of Watersmeet in the western UP of Michigan. It contains zircon crystals dated at 3.65 by, making it Michigan's oldest rock and one of the oldest in the USA. Zircon crystals retain their original composition at very high temperatures thus allowing for dating of Earth's old metamorphic rocks.
Views: 971 CranbrookScience
Crystal Series: Zircon
 
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Crystal Series: Zircon Etsy: https://www.etsy.com/shop/eliptica24 Facebook: https://www.facebook.com/lippywitch Tarot/Spiritual Blog: http://eliptica24.blogspot.com/ G+: https://plus.google.com/112777523525575442098/posts Leave a comment, like, subscribe, and share the videos if you vibe with them! Thanks for stopping by!
Views: 255 Lippy Witch
Oldest Known Rocks Discovered
 
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Canadian bedrock more than four billion years old may be the oldest known section of the Earth's early crust. Scientists at the Carnegie Institution used geochemical methods to obtain an age of 4.28 billion years for samples of the rock, making it 250 million years more ancient than any previously discovered rocks.
Views: 2640 Carnegie Science
The Rise Of The Pauls (Official Music Video) feat. Jake Paul #TheSecondVerse
 
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THE BOYS ARE BACK. Join the movement. Be a Maverick ► https://ShopLoganPaul.com/ SUBSCRIBE FOR DAILY VLOGS! ► http://bit.ly/Subscribe2Logan Watch Yesterday’s Vlog ► https://youtu.be/iBU6n4cwkhc Directed by Sebastian A. Guerra https://www.instagram.com/sagsebi/ Music Producer: GARABATTO facebook.com/GarabattoMusic Youtube.com/sahemusic ADD ME ON: INSTAGRAM: https://www.instagram.com/LoganPaul/ TWITTER: https://twitter.com/LoganPaul I’m a 22 year old kid living in Hollywood. I make comedy vids, travel a lot, and I have a pretty colorful parrot named Maverick. This is my life. https://www.youtube.com/LoganPaulVlogs
Views: 69598133 Logan Paul Vlogs
GemeBlog Video: Zircon - The Birthstone of the Month of December
 
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Zircon is a zirconium silicate mineral (ZrSiO4), which is available in a variety of colors in the gem trade, including colorless, yellow, brown, red, blue and green. Its name is thought to be derived from the Persian word zargun, meaning “gold-colored,” or from the Arabic word zarkun, meaning “cinnabar” or “vermillion.” A variation of this word "jargoon" is still used to describe light-colored zircons. Zircon, specifically blue zircon, is the birthstone of the month of December, together with Tanzanite and Turquoise. Zircon is a symbol of purity. It was believed to provide the wearer with wisdom, honor and prosperity and also to increase confidence and compassion. Zircon was thought to heal disease, relieve pain, increase appetite and to generate sound sleep. Did you know that Zircon is the oldest natural mineral dated on earth, dating back more than 4.4 billion years? And that it should not to be confused with Cubic Zirconia, an inexpensive synthetic diamond simulant? Or that Australia is responsible for 37% of the world's production? Are you aware of the 3 types of zircons: high, medium and low, and what they signify? Find out more on this amazing gem’s colors, its sources and its physical properties in this GemeBlog video. Enjoy!!! For more information, visit us at www.gemewizard.com or look us up in Facebook and LinkedIn under Gemewizard.
Views: 321 Gemewizard
Zircon Live
 
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I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
Views: 111 Xereth666
Fission track and the Oil window
 
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Innovation Academy student Daniel Dopke, PhD Trinity College researches the timing and causes of recent exhumation in Ireland and Britain by using apatite fission track dating. Apatite fission track dating has major implications for intra-plate exhumation studies for Petroleum companies.
Views: 2647 TheInnovationAcademy
50) Geologic Dating Methods
 
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An incomplete list of other dating methods besides radiometric dating.
Views: 1763 CVshorey
Acasta Gneiss
 
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Gneiss is a high grade banded metamorphic formed by the deep burial and heating of its pre-existing parent rock. This specimen the Acasta Gneiss from the NW territories of Canada is the Earth's oldest known intact rock and one of its it's earliest vestiges of continental crust. Radioisotope dates on zircon crystals in the gneiss indicate an age of ~4.03 Byr -- some zircon crystals surviving from its parent granite are 4.2 Byr. Zircon crystals retain their original composition at very high temperatures thus allowing for dating of earth's old metamorphic rocks.
Views: 1266 CranbrookScience
The McCammon Collections - Vol. 12 - Zircons, Rough and Cut, Tanzania (Thumbnail Specimens)
 
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Pair of Zircons from Tanzania, Africa. Cut and as found in the river gravels. One of my favorite minerals, Zircon (ZrSiO4) is very useful in dating the age of rocks due to trace amounts of uranium. in gemstone they offer a wide range of colors with outstanding dispersion. Zircons are sometimes radioactive, these are not. The cut stone has been in our collection for quite some time now, the rough specimen I found recently in a bulk lot of zircon crystals, they pair up very well.