The geochemical evolution of the continental crust

  title={The geochemical evolution of the continental crust},
  author={Stuart Ross Taylor and Scott M. McLennan},
  journal={Reviews of Geophysics},
A survey is given of the dimensions and composition of the present continental crust. The abundances of immobile elements in sedimentary rocks are used to establish upper crustal composition. The present upper crustal composition is attributed largely to intracrustal differentiation resulting in the production of granites senso lato. Underplating of the crust by ponded basaltic magmas is probably a major source of heat for intracrustal differentiation. The contrast between the present upper… 

Young upper crustal chemical composition of the orogenic Japan Arc

A new geochemical estimate of the young (mainly Paleozoic age to present) upper crust of the Japan Arc shows a dacitic composition in contrast to the idea that andesite is predominant in active

Water in granulites: implications for the nature and evolution of the lower continental crust

Abstract The lower continental crust is one of the most important sphere-layers in the deep earth and is the direct place where the crust-mantle interactions occur. Granulites are the dominated rocks

Peridotite weathering is the missing ingredient of Earth’s continental crust composition

It is shown that hydrothermal alteration and chemical weathering of ultramafic rock compensates for the low Ni and Cr concentrations of island arc-type magmatic rocks.

Nature and composition of the continental crust: A lower crustal perspective

Geophysical, petrological, and geochemical data provide important clues about the composition of the deep continental crust. On the basis of seismic refraction data, we divide the crust into type

Evolution of the continental crust

It may take up to one billion years for new crust to dominate the sedimentary record, and combining models for the differentiation of the crust and the residence time of elements in the upper crust indicates that the average rate of crust formation is some 2–3 times higher than most previous estimates.

Planetary Crusts: Their Composition, Origin and Evolution: Composition and evolution of the continental crust

It is difficult to calculate what the composition of the crust of the Earth is in any reliable way (Harold Urey) The composition of the upper part of the continental crust is well established, but it

Role of Arc Processes in the Formation of Continental Crust

We review data and recent research on arc composition, focusing on the relatively complete arc crustal sections in the Jurassic Talkeetna arc (south central Alaska) and the Cretaceous Kohistan arc

Comparison of element abundance between the exposed crust of the continent of China and the global averaged upper continental crust: Constraints on crustal evolution and some speculations

Based on the results of a study of regional element abundance in eastern China and the 1:200 000 geochemical surveys in northern Xinjiang, the element geochemical characteristics of the exposed crust



Geochemical Constraints on the Growth of the Continental Crust

Several lines of evidence indicate that the Archean upper crust was considerably more mafic than the present-day upper crust. There has been no significant change in REE and Th abundances in

The composition and evolution of the continental crust: rare earth element evidence from sedimentary rocks

  • S. TaylorS. McLennan
  • Geology
    Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
  • 1981
The composition of the present-day upper crust, inferred from the uniformity of sedimentary rock r.e.e. (rare earth element) patterns, is close to that of granodiorite. A revised ‘andesite’ model is

The continental crust: Its composition and evolution

This book describes the composition of the present upper crust, and deals with possible compositions for the total crust and the inferred composition of the lower crust. The question of the

Origin of Granulite Terranes and the Formation of the Lowermost Continental Crust

Application of well-calibrated barometers indicates that thickening of the crust by the crystallization of mafic magmas at the crust-mantle boundary may account for both the formation of regional granulite terranes at shallower depths and the Formation of deep-seated mafIC crust represented by many xenolith suites.

The composition and petrogenesis of the lower crust: A xenolith study

Granulite facies lower crustal xenoliths from a single basaltic vent (Hill 32) in the McBride volcanic province, north Queensland, Australia, illustrate the extreme lithologic diversity of the deep

Origin and evolution of granulites in normal and thickened crusts

Rocks buried in the upper part of a doubly thickened crust during orogeny can show prograde reactions with transitional features from lower grade rocks up to granulite facies. They can be exposed at

Geochemical Evidence for Crust-To-Mantle Recycling in Subduction Zones

Return of oceanic crust to the mantle is implicit in plate tectonic theory. During its life, oceanic crust acquires a veneer of sediment, which for the most part is derived from the continental