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Palæozoic Seismicity

Nature volume 138, pages 243–244 (1936)Cite this article

Abstract

EVIDENCE of contemporaneous disturbances during the deposition of Ordovician strata has recently been collected at localities in the Irish Free State including Portraine, Balbriggan, Raheen Bridge and Tramore. This comprises breaking up and slumping of limestone beds, rapid alternations of shale and graded sand (greywacke sedimentation), breccia beds between sub-parallel undisturbed layers, and anti-dune wave-crests in mud. The cause probably lies in seismicity associated with the instability of the Lower Palæozoic geosyncline.

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Authors and Affiliations

  1. Department of Geology, University, Glasgow,

    ARCHIE LAMONT

Authors
  1. ARCHIE LAMONT
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LAMONT, A. Palæozoic Seismicity. Nature 138, 243–244 (1936). https://doi.org/10.1038/138243b0

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