Relict and Recent Beachrock from Southern Africa

@article{Siesser1974RelictAR,
  title={Relict and Recent Beachrock from Southern Africa},
  author={William G. Siesser},
  journal={Geological Society of America Bulletin},
  year={1974},
  volume={85},
  pages={1849-1854}
}
  • W. G. Siesser
  • Published 1 December 1974
  • Geology, Geography
  • Geological Society of America Bulletin
Beachrock forms a broken pavement along part of the southwestern coast of South Africa. The rocks are found in the intertidal zone as well as slightly above high-tide and below low-tide level. The beachrock is composed chiefly of quartz grains, with lesser amounts of skeletal fragments, cemented by micrite. Carbonate mineralogy of the rocks consists of low-Mg calcite and aragonite, with low-Mg calcite predominating. Laminated calcrete (wholly low-Mg calcite) covers much of the beachrock… 
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