Ancient Glacial-Marine Deposits: Their Spatial and Temporal Distribution

  • John B. Anderson

Abstract

A number of different criteria for recognizing glacial-marine deposits and for distinguishing them from other glacial and nonglacial deposits exist. These are outlined in this paper. Unfortunately, most investigations of inferred glacial-marine sequences have relied on only a few of these criteria, and the criteria used vary with different investigators. Also, some major misconceptions about glacial-marine sedimentation exist; these are the result of our poor understanding of modern glacial-marine environments. As a result, there is dispute over the origin of many diamictite- and/or lonestone-bearing sequences.

This paper attempts to define the spatial and temporal distribution of glacial-marine deposits. The objective was to stress the importance of these deposits by the nature of their great spatial and temporal distribution. This has been a difficult task, again, because there is seldom any good consensus as to the origin of diamictites and pebbly mudstones. Glacial-marine deposits are surely widespread, both in time and space, but the very controversy that stems over their interpretation is an equally important point in stressing that high latitude seas are perhaps the most complex and poorly understood sedimentary environment on earth.

Keywords

Permian Quartz Beach Sorting Mudstone 

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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • John B. Anderson
    • 1
  1. 1.Department of GeologyRice UniversityHoustonUSA

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