General trends in the evolution of the chemical composition of sedimentary and magmatic rocks of the earth's continental crust

Details General trends in the evolution of the chemical composition of sedimentary and magmatic rocks of the earth's continental crust General trends in the evolution of the chemical composition of sedimentary and magmatic rocks of the earth's continental crust

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988geokh......180r&link_type=abstract

Geokhimiia (ISSN 0016-7525), Feb. 1988, p. 180-199. In Russian.

Mathematics

Logic

Basalt, Chemical Composition, Earth Crust, Granite, Igneous Rocks, Sedimentary Rocks, Earth Planetary Structure, Earth Surface, Lithology, Phase Transformations

Scientific paper

A survey of a large (45,000 analyses) global-wide data base on the chemical composition of the three most abundant rocks of the earth's crust (shales, basalts, and granitoids) is conducted. It is demonstrated that, during the entire geological history of the earth, the average compositions of these genetically different rocks have undergone regular similarly-directed changes. For each of these rock types, a definite decreasing trend in the contents of Mg, Ni, Co, and Cr was accompanied by an increase in the contents of K, Rb, and REE, and other lithophile elements. These changes reflect the successive growth in the differentiation of the deep-seated material reaching the surface of the earth and of the products of its transformations. These changes in the rock composition are consistent with independently determined changes in the thermal regime of the earth's history and with data on the growth of the continental crust's mass and thickness.

Affiliated with

Also associated with

No associations

Rating

General trends in the evolution of the chemical composition of sedimentary and magmatic rocks of the earth's continental crust does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with General trends in the evolution of the chemical composition of sedimentary and magmatic rocks of the earth's continental crust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and General trends in the evolution of the chemical composition of sedimentary and magmatic rocks of the earth's continental crust will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1225813