Book Chapter

The origin and occurrence of subaqueous sedimentary cracks

Sean McMahon, Ashleigh van Smeerdijk Hood, Duncan McIlroy

EARTH SYSTEM EVOLUTION AND EARLY LIFE: A CELEBRATION OF THE WORK OF MARTIN BRASIER | Geological Society Special Publication | GEOLOGICAL SOC PUBLISHING HOUSE | Published : 2017

Abstract

The rock record attests that sediments have cracked at or below the sediment-water interface in strictly subaqueous settings throughout Earth history. In recent decades, a number of hypotheses have been advanced to explain this phenomenon, but these are widely regarded as being mutually exclusive and there is little consensus about which model is correct. In this paper, we first review the geometries, lithologies and range of facies in which subaqueous sedimentary cracks occur in the geological record, with particular attention to cracks in carbonates. We then evaluate current models for subaqueous cracking, emphasizing that different models may be correct with respect to different sets of c..

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University of Melbourne Researchers