Granitic Pegmatites, August 2012, Vol. 8, No. 4
June 28, 2024
Kaolin, June 2014, Vol. 10, No. 3
June 28, 2024
Continental Crust At Mantle Depths, August 2013, Vol. 9, No. 4
$20.00
The discovery of diamond and coesite in crustal rocks is compelling evidence that continental material has experienced pressures that can be achieved only at mantle depths. The classical idea that continents are too buoyant to subduct has given way to the notion of density changes driving deep subduction during the collision process, thus enabling some crust to be exhumed to the surface and the rest to sink into the mantle.
Continental Crust At Mantle Depths
August 2013, Vol. 9, No. 4
The discovery of diamond and coesite in crustal rocks is compelling evidence that continental material has experienced pressures that can be achieved only at mantle depths. The classical idea that continents are too buoyant to subduct has given way to the notion of density changes driving deep subduction during the collision process, thus enabling some crust to be exhumed to the surface and the rest to sink into the mantle. Over twenty localities of unequivocal continental crust containing diamond or coesite are now recognized around the globe, and their study constitutes a new field in petrology, dubbed ultrahigh-pressure metamorphism. Using microscopic observations, phase equilibrium modeling, geochronology, and geodynamic modeling, we track the journey of ultrahigh-pressure rocks to the mantle and back. Continental ultrahigh-pressure terranes impact our understanding of plate tectonics through time, crustal recycling and mantle geochemistry, melting in subduction zones, and collisional processes in general.
Why You’ll Love Elements Magazine:
- Expert Contributors: Articles written by renowned researchers in the field of geoscience.
- Engaging Content: Join a community of readers who are passionate about Elements.
- Exceptional Quality: Each issue is printed on high-quality paper with stunning visuals and detailed illustrations that bring complex scientific concepts to life.
Order your copy of the August 2013 issue of Elements magazine today and delve into the continental crust at mantle depths.
Related products
-
Early Earth, August 2006, Vol. 2, No. 4
$20.00The earliest Earth was a strange inhospitable world, yet transitions occurred culminating in the evolution of life within the first billion years. The preservation of a sparse and ambiguous rock record has encouraged debate.
-
Glasses And Melts: Linking Geochemistry And Materials Science, October 2006, Vol. 2, No. 5
$20.00Geological interest in studying melts stems from early recognition that melts play a fundamental role in determining the physical and chemical behaviour of magmas and magmatic processes. However, due to the inherent difficulties associated with working at high temperatures, much of the geological research over the last 30 years has used quenched melts or glasses as proxies for melts themselves.
-
Supervolcanoes, February 2008, Vol. 4, No. 1
$20.00Explosive super-eruptions from large volume, shallow magma systems lead to enormous and devastating pyroclastic flows, the formation of gigantic collapse calderas, and deposition of volcanic ash over continent-sized areas. Recognition that future eruptions from these “supervolcanoes” will undoubtedly have severe impacts on society—and perhaps on life itself—has led to recent public and media interest.
