Crustal Evolution - A Mineral Archive Perspective

C. J. Hawkesworth*, A. I S Kemp, B. Dhuime, C. D. Storey

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

Abstract

The continental crust is the principal record of conditions on the Earth for the last 4.4 Ga. Less than 10% of the crustal rocks exposed are older than 2.5 Ga, and yet 50% of the continental crust may have stabilized by that time. A key archive is minerals like zircon which can be precisely dated and preserve robust isotope and trace element signals. Much of the early crust was mafic in composition, and the late Archaean marks the transition from a period of uniformly poor preservation potential to one in which the geological record appears to be biased by the tectonic setting in which the rocks were formed.

Original languageEnglish
Title of host publicationFrontiers in Geochemistry: Contribution of Geochemistry to the Study of the Earth
PublisherJohn Wiley & Sons, Inc
Pages20-42
Number of pages23
ISBN (Print)9781405193382
DOIs
Publication statusPublished - 20 Apr 2011

Keywords

  • 'model ages'
  • 'poor preservation'
  • Crustal Evolution - A Mineral Archive Perspective
  • Crustal Growth Processes from the Igneous Record Using Zircons
  • Igneous and Sedimentary Records
  • The Composition of the Early Proto Continental Crust
  • The Continental Record - Peaks of Crust Generation or a Function of Preservation?
  • The Sedimentary Record and Erosion Models

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