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Home→Categories Geology

Category Archives: Geology

The Cliff – Fascinating 15 minute talk about Geology by Zoe Shipton on BBC Radio

Posted on February 11, 2015 by WykenSeagraveFebruary 11, 2015
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“Most people look at a cliff and just see a pile of rocks. But when I look at a cliff I see millions of years of geological time.” says Zoe Shipton, Professor of Geology at Strathclyde University. She explains what … Continue reading →

Posted in Broadcast, Geology | Leave a reply

GOCE gravity satellite reveals circulation of Earth’s mantle

Posted on January 28, 2014 by WykenSeagraveJanuary 28, 2014
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Analysis of data from the European Space Agency’s GOCE satellite, which flew during 2013, reveal deep plumes of mantle material rising from more than 2,000 km down. The images, generated by Dr Isabelle Panet from the Paris Institute of Earth … Continue reading →

Posted in Geology, History of the Earth, Plate Tectonics | Leave a reply

Earth’s Oceans Will Evaporate in 1 Billion Years

Posted on January 25, 2014 by WykenSeagraveJanuary 25, 2014
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“The sun, like all main sequence stars, is getting brighter with time and that affects the Earth’s climate,” says Dr. James F. Kasting, professor of meteorology and geosciences at Penn State University. “Eventually temperatures will become high enough so that … Continue reading →

Posted in Future of Earth, Geology | Leave a reply

Scientists find oldest known mineral in meteorite

Posted on July 2, 2012 by WykenSeagraveJuly 2, 2012
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Panguite is a new titanium oxide (named after Pan Gu, the giant from ancient Chinese mythology who established the world by separating yin from yang to create the earth and the sky) which has been discovered by scientists from the … Continue reading →

Posted in Geology, Planetary Science | Leave a reply

The Planet in a Pebble by Jan Zalasiewicz – Guardian Book Review

Posted on June 19, 2012 by WykenSeagraveJune 19, 2012
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For geologist Zalasiewicz, each and every pebble you find in your garden or on a shoreline is a “capsule of stories” which tell the dramatic history of the Earth. From the “pebble menagerie”, he chooses a piece of slate lying … Continue reading →

Posted in Books, Geology, References | Leave a reply

Amazing BBC Radio Programmes about Mass Extinction

Posted on May 15, 2012 by WykenSeagraveMay 15, 2012
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Adam Rutherford presents an amazing three-part series on extinction on UK BBC Radio 4 broadcast on Tuesdays at 11:00 and Thursdays at 21:00 (GMT+1 hour). People living in the UK can listen on the BBC iPlayer. Others might be able … Continue reading →

Posted in Geology, Mass Extinction | 1 Reply

National Museum of Natural History Geologic Time Site

Posted on April 17, 2012 by WykenSeagraveApril 17, 2012
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A useful overview of geological history, although a little inconsistent in use of some names, eg Euramerica is sometimes referred to as Laurussia, which I believe is the same thing. National Museum of Natural History Geologic Time Site. … Continue reading →

Posted in Geology, Paleogeography | Leave a reply

Geologic Time: The Story of a Changing Earth

Posted on April 10, 2012 by WykenSeagraveApril 10, 2012
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The Smithsonian National Museum of Natural History has a useful introduction to geological time. Geologic Time: The Story of a Changing Earth. … Continue reading →

Posted in Geology, Paleogeography | Leave a reply

Oldest Rocks

Posted on April 1, 2012 by WykenSeagraveApril 1, 2012
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The oldest terranes, with ages ranging from 3.8 Ga to 4.0 Ga, have been identified in Canada, while Australian zircon crystals dated at 4.4 Ga represent the oldest dated minerals on Earth. The exceptional resistance of zircon grains to repeated … Continue reading →

Posted in Earliest rocks, Geology | Leave a reply

Earth Began Recycling Crust 3 Billion Years Ago

Posted on March 17, 2012 by WykenSeagraveMarch 17, 2012
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The researchers found that in the first 1.5 billion years or so of the Earth’s history, the average net rate at which new continental crust formed remained high, at about 0.7 cubic miles (3 cubic kilometers) annually, enough to establish … Continue reading →

Posted in Geology, Paleogeography | Leave a reply
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