New Zealand Journal of Geology and Geophysics abstracts

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Textural entropy groupings from a modern lake-lagoon system and its ancient analogue

KEN J. WOOLFE

Department of Earth Sciences

James Cook University

Townsville

Queensland 4811, Australia

Abstract  Entropy analysis of grain-size distributions from 95 modern lake-lagoon sediment samples results in clusters which can be directly related to depositional setting. Similar entropy groupings of 60 samples obtained from the Pleistocene rock record show that the modern and ancient sedimentary settings are analogous. Additional splitting of the modern dataset results in groupings which reflect bedform-scale and element-scale features in the lake-lagoon system. Given sufficient data, it appears that this methodology could be used to discriminate small-scale sedimentary environments.

Keywords  grain size; entropy analysis; lacustrine; lagoon; Wairarapa; Te Muna Formation; Hautotara Formation; depositional environment

New Zealand Journal of Geology and Geophysics, 1995, Vol. 38: 259-262

0028-8306/95/3802-0259 $2.50/0 (c) The Royal Society of New Zealand 1995

PDF file of entire paper: medium quality (376K); (scanned from paper original: notes about this process)

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