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Southern High-Latitude Diatom Biostratigraphy

By
F. M. Weaver
F. M. Weaver
Exxon Production Research Company
P.O. Box 2189, Houston, Texas 77001 U.S.A.
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A. M. Gombos, Jr.
A. M. Gombos, Jr.
Exxon Production Research Company
P.O. Box 2189, Houston, Texas 77001 U.S.A.
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Published:
January 01, 1981

Abstract

The development of Cenozoic and Mesozoic southern high-latitude diatom biostratigraphy over the past fifteen years is summarized with emphasis on significant advancements resulting from deep-sea drilling in the Antarctic and Sub- Antarctic regions.

Regional differences in diatom distribution and occurrence in Neogene sediments recovered at DSDP Sites 266 and 278 are compared. Spatial and temporal variance in species as reported in earlier investigations results from several factors: 1) the lack of continuous coring at Site 266, 2) relative incompleteness of the Neogene record recovered at Sites 266 and 278, 3) unrecognized unconformities, 4) regional paleobiogeographic differences, 5) applied taxonomy, and 6) incomplete species range documentation.

We propose a regionally applicable Neogene diatom zonation utilizing easily recognizable species with broad geographic distribution. This biostratigraphic framework consists of five previously defined and six modified zones from DSDP Legs 28 and 29 reports. In addition, we propose five new zones and document sixteen datums having apparent regional significance.

We herein provide the datums used for geochronologic subdivision and the correlation of epoch boundaries in Sites 266 and 278, floral references for all stratigraphically significant species, and a comprehensive bibliography on Southern Ocean diatoms.

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Contents

SEPM Special Publication

The Deep Sea Drilling Project: A Decade of Progress

John E. Warme
John E. Warme
Colorado School of Mines, Golden Colorado.
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Robert G. Douglas
Robert G. Douglas
University of Southern California, Los Angeles California
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Edward L. Winterer
Edward L. Winterer
Scripps Institution of Oceanography, La Jolla California
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SEPM Society for Sedimentary Geology
Volume
32
ISBN electronic:
9781565761629
Publication date:
January 01, 1981

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