Results 291 to 300 of about 776,982 (368)

Mafic slab melt contributions to Proterozoic massif-type anorthosites. [PDF]

open access: yesSci Adv
Keller DS   +6 more
europepmc   +1 more source

Archaean multi-stage magmatic underplating drove formation of continental nuclei in the North China Craton. [PDF]

open access: yesNat Commun
Liu J   +7 more
europepmc   +1 more source
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Diamonds and the Geology of Mantle Carbon

Reviews in Mineralogy and Geochemistry, 2013
### Introduction Earth’s carbon, derived from planetesimals in the 1 AU region during accretion of the Solar System, still retains similarities to carbon found in meteorites (Marty et al. 2013) even after 4.57 billion years of geological processing.
Shirey, Steven B.   +8 more
openaire   +5 more sources

Geology of the Crust and Mantle, Western United States [PDF]

open access: possibleScience, 1964
Seismic refraction, gravity, phase velocity, and magnetic data, coupled with the geologic record, are all approximately satisfied by the structure shown in Fig. 9. A 20-kilometer crust under the Coast Ranges and Great Valley thickens to more than 30 kilometers under the Sierra Nevada and parts of the Basin and Range province; this whole area is ...
Manik Talwani, George A. Thompson
openaire   +3 more sources

Evidence for Global Synchronism in Mantle Plume Convection, and Possible Significance for Geology

Nature, 1972
Volume estimates and age dating of basic, non-orogenic igneous deposits suggest synchronous discharge from many hot spots, identified as mantle plumes. The discharge fluctuations seem to mirror the histories of diverse global geological parameters. Extinction crisis of faunal evolution may reflect trace-element pollution occurring during intervals of ...
P. Vogt
openaire   +3 more sources

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