Revision History
- Not dated
- On the page tectonics.html, the Chinese province struck by an earthquake in 1976 was changed from Haicheng to Hebei.
- March 4, 1999 -- version 1.01
- On the page cove.html, the box on the image showing Dinosaur Cove was moved westward to more accurately portray its location.
- May 5, 1999 -- version 1.02
- Some changes were made to the layout in general. No changes were made to the content.
- May 6, 1999 -- version 1.03
- On the page cove.html, on the image, the words printed on Antarctica were changed to read "Antarctica 108 million years
ago" instead of "present day."
- June 24, 1999 -- version 1.04
- On the page exploring.html, the location of Great Barrier Reef was stated as being off the northwestern coast of Australia
instead of the northeastern coast.
- July 7, 1999 -- version 1.05
- On the page Thingvellir.html, the caption was amended to state that the North American plate is to the right, not the left.
- December 13, 1999 -- version 1.06
- On the page polar.html, the name "ellito" was changed to "ellioti" and "Gondwanaland" was changed to "Gondwana."
- March 28, 2000 -- version 1.07
- On the page Endnotes.html, the authors' biographies were updated.
- January 29, 2001 -- version 1.08
- On the page cove.html, the dates for positions of Australia and Antarctica have been revised from 108 to 104 million years ago.
- February 24, 2003 -- version 1.09
- On the page Thingvellir.html, the caption has been amended for reasons of historical accuracy.
- September 29, 2003 -- version 1.10
- On the page hotspots.html, a link was added to http://www.mantleplumes.org for further reading on the topic.
- January 20, 2007 -- version 1.11
- On the page tectonics.html, the wording was amended to reflect that Northridge is a community within Los Angeles.
- March 27, 2007 -- version 1.12
- On the page historical.html, Jurassic was changed from "135 million years ago" to "150 million years ago" in the figure showing the supercontinent Pangaea.
- November 25, 2008 -- version 1.13
- On the page slabs.html, The edges of the graphic have been modified slightly.
- January 13, 2009 -- version 1.14
- On the page historical.html, Professor of Geology Alexander
Du Toit taught at Witwatersrand University, not the University of Johannesburg, as previously stated.
- September 19, 2011 -- version 1.15
- On the page slabs.html, The name of the Philippine Plate has been changed to the Philippine Sea Plate.
- May 24, 2012 -- version 1.16
- On the page understanding.html, The thumbnail image for continental-to-continental plate convergence has been adjusted, and the text in this discussion has been clarified.
- August 7, 2012 -- version 1.17
- On the page historical.html, In accordance with the latest International Stratigraphic Chart, Permian was changed from "225 million years ago" to "250 million years ago" and Jurassic was changed from "150 million years ago" to "145 million years ago."
- September 15, 2014 -- version 1.18
- On the page understanding.html, The image of the San Andreas fault has been adjusted. The relative motion arrows have been removed from the fracture zones, as they were misleading.
- May 22, 2015 -- version 1.19
- On the page himalaya.html, The image of the moving of "India" has been simplified and the caption changed to reflect this. Old caption: The 6,000-km-plus journey of the India landmass (Indian Plate)
before its collision with Asia (Eurasian Plate) about 40 to 50 million years
ago (see text). India was once situated well south of the Equator, near
the continent of Australia.
- September 3, 2015 -- version 1.20
- On the page himalaya.html, The image of the moving of "India" has had the time of movevment changed from 40 to 50 million years ago.
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URL: https://pubs.usgs.gov/gip/dynamic/revision.html
Last updated: 09.03.15
Contact: bhanks@usgs.gov