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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 69 (1985)

Issue: 9. (September)

First Page: 1422

Last Page: 1422

Title: Relationship Between Test Morphology and Bathymetry in Recent Bolivina albatrossi Cushman, Northwestern Gulf of Mexico: ABSTRACT

Author(s): Anthony C. Gary

Article Type: Meeting abstract


An automated video digitizer and closed-form Fourier series Previous HitanalysisNext Hit were used in this study to quantify benthic foraminiferal test morphology. This approach allows morphology to be described rapidly, objectively, and accurately and to be compared statistically to important environmental variables. Canonical discriminant Previous HitanalysisNext Hit reduced the variable dimensions and revealed specific shape components relatable to bathymetry in Holocene specimens of Bolivina albatrossi Cushman from the northwestern Gulf of Mexico. Populations of B. albatrossi exhibit reduced test triangularity and increased surface sculpture relief with increasing water depth. Margin lobateness decreases with increasing depth. A depth classification algorithm using Fourier harmonic amplitudes divides the ba hyal zone into four subzones. With further development this approach could allow Previous HitpaleoenvironmentalTop reconstructions to be automated and quantified.

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Copyright 1997 American Association of Petroleum Geologists