Detrital Modes of Recent Deep-Sea Sands and their Relation to Tectonic Setting: A First Approximation

  1. Dorrik A. V. Stow
  1. Renzo Valloni1 and
  2. J. Barry Maynard2

Published Online: 29 APR 2009

DOI: 10.1002/9781444304473.ch25

Deep-Water Turbidite Systems

Deep-Water Turbidite Systems

How to Cite

Valloni, R. and Maynard, J. B. (1991) Detrital Modes of Recent Deep-Sea Sands and their Relation to Tectonic Setting: A First Approximation, in Deep-Water Turbidite Systems (ed D. A. V. Stow), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444304473.ch25

Editor Information

  1. Department of Geology, University of Southampton, UK

Author Information

  1. 1

    Istituto di Petrografia, Universita di Parma, 43100 Parma, Italy

  2. 2

    H. N. Fisk Laboratory of Sedimentology, Department of Geology, University of Cincinnati, Cincinnati, Ohio 45221, USA

Publication History

  1. Published Online: 29 APR 2009
  2. Published Print: 11 NOV 1991

ISBN Information

Print ISBN: 9780632032624

Online ISBN: 9781444304473

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Keywords:

  • petrographic analyses of modern deep-sea sands;
  • plate-tectonic categories;
  • petrologic composition;
  • trailing-edge continental margins;
  • back-arc basins

Summary

Complete petrographic analyses of modern deep-sea sands are surprisingly rare, but are needed if problems such as the influence of tectonics on petrology, or changes in petrology due to diagenesis, are to be understood in ancient sandstones. This paper is a first attempt, using data from our own study of 80 sands plus data from the literature, to establish a baseline for modern deep-sea sands with which ancient sandstones can be compared. We assigned sands to five plate-tectonic categories, each of which has a distinct average petrologic composition: (1) basins associated with trailing-edge continental margins, Q62F26L12; (2) with leading-edge continental margins, either subduction, Q16F53L31, or (3) strike-slip, Q34F39L27; (4) back-arc basins, Q20F29L51; (5) fore-arc basins, Q8F17L75. The amount and type of lithic fragments and the type of feldspar are particularly important discriminators, the amount of quartz less so. Trailing-edge and fore-arc basins have quite distinctive compositions, but back-arc basins and basins near the two types of leading-edge margins show some overlap, and thus may be hard to differentiate in ancient sandstones.