In a section of Australia, the mantle is being actively exposed on the surface at this very moment. And no, I am not referring to a volcanic eruption. Rather, I am referring to Macquarie island, which hosts a colorful assortment of primarily green minerals which include olivine (whose gem form is known as peridot), serpentine, and zoisite. This video will explain how a piece of the Earth's mantle ended up above sea level.
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Google Earth imagery used in this video: ©Google & Data Providers
Thumbnail Photo Credit: Photo Credit: Derivative of an image (resized, cropped, + other modifications) from (Kimberley Collins, Flickr, CC BY 2.0), and is used & licensed under CC BY 2.0 by / geologyhub
Creative Commons Licenses used for specific content (such as a single image within the video which as a whole does not entirely fall under the same license) or sections of specific content (such as a photo within a table) in this video (not the entire table for this example):
CC BY 2.0: creativecommons.org/licenses/...
CC BY 3.0: creativecommons.org/licenses/...
CC BY 4.0: creativecommons.org/licenses/...
Sources:
[1] Rosalind M. Coggon, Damon A.H. Teagle, Michelle Harris, Garry J. Davidson, Jeffrey C. Alt, Timothy S. Brewer,
Hydrothermal contributions to global biogeochemical cycles: Insights from the Macquarie Island ophiolite,
Lithos, Volume 264, 2016, Pages 329-347, ISSN 0024-4937, doi.org/10.1016/j.lithos.2016..., CC BY 4.0
Note: This was used to source the minerals mentioned in the video's description.
[2] Crameri, F., Magni, V., Domeier, M. et al. A transdisciplinary and community-driven database to unravel subduction zone initiation. Nat Commun 11, 3750 (2020). doi.org/10.1038/s41467-020-17..., CC BY 4.0
[3] Dominic A. Hodgson, Alastair G.C. Graham, Stephen J. Roberts, Michael J. Bentley, Colm Ó Cofaigh, Elie Verleyen, Wim Vyverman, Vincent Jomelli, Vincent Favier, Daniel Brunstein, Deborah Verfaillie, Eric A. Colhoun, Krystyna M. Saunders, Patricia M. Selkirk, Andrew Mackintosh, David W. Hedding, Werner Nel, Kevin Hall, Matt S. McGlone, Nathalie Van der Putten, William A. Dickens, James A. Smith, Terrestrial and submarine evidence for the extent and timing of the Last Glacial Maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands, Quaternary Science Reviews, Volume 100, 2014, Pages 137-158, ISSN 0277-3791, doi.org/10.1016/j.quascirev.2.... (www.sciencedirect.com/science..., CC BY 3.0
Creative Commons Image Sources:
Penguins:
www.flickr.com/photos/1147061...
Sepentinite:
www.flickr.com/photos/jsjgeol...
Dunite:
www.flickr.com/photos/jsjgeol...
Serpentine w/ chromite:
www.flickr.com/photos/jsjgeol...
0:00 Rocks from the Mantle
0:36 Macquarie Island
1:44 A Disclaimer
2:18 Plate Tectonics
2:30 Macquarie Island Hypothesis
4:06 Conclusion
12 июл 2024
