'Primitive mantle' diaporamas de présentation

Archean Greenstone Belt

Archean Greenstone Belt. 1. Greenstone Belt Greenstone belts are generally elongate, Archean to Proterozoic terrains comprising intrusive and extrusive mafic to ultramafic igneous rocks , felsic volcanics , and inter-flow or cover sedimentary rocks .

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ESCI-430 Trace-element and isotope geochemistry Cin-Ty Lee Gerald Dickens TA: Zhengxue Li

ESCI-430 Trace-element and isotope geochemistry Cin-Ty Lee Gerald Dickens TA: Zhengxue Li. Grading scheme: 50 % Homework, quizzes, and class participation 25 % Term Paper 25 % Oral presentation of term paper Texts Faure, Isotope: Principles and applications, 3rd edition

918 views • 39 slides

Composition of the Earth: a more volatile elements perspective

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Silicate Earth

Silicate Earth. Primitive mantle Present-day mantle Crust Oceanic crust Continental crust. Reservoir Volume Mass Mass % (10 27 cm 3 ) (10 27 g) Earth 1.083 5.98 100 Core 0.175 1.88 31.5 Mantle 0.899 4.08 68.1 Crust (continental) 0.00842 0.0236 0.4

450 views • 22 slides