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Book Chapter

Quaternary Carbonate Eolianites

Published:
January 01, 2001

Abstract

Quaternary carbonate eolianites on Babaroian islands form a complex constructional topography composed of deposits formed during different glacioeustatic sea-level highstands. These eolianites constitute spatially and temporally discontinuous sediment packages. Within deposits formed during individual sea-level highstand events, eolianites from transgressive, stillstand, and regressive phases can be differentiated, but only if exposure is good and detailed study is undertaken. The eolianites may be stacked atop one another, or they may be in contact with marine deposits. Eolianites may overlie older marine deposits, interfinger with coeval marine rocks, or be overlain by younger marine facies. Depositional packages including eolianites that are deposited during a single sea-level highstand are commonly bounded above and below by erosion surfaces characterized by terra rossa paleosols. However, the patchiness of eolian deposition, the occurrence of calcarenite protosols, possible erosion of a paleosol during an ensuing transgression, and the possibility of soil movement downward into karst features can create confusion about actual unit boundaries. Interpretation of carbonate eolianite sequences in the ancient rock record may be enhanced if the complexities of the Quaternary eolianite record are appreciated. The depth of study required to successfully interpret well-exposed Quaternary eolianites implies that ancient eolianites, with less exposure and greater diagenesis, are unlikely to be resolved to a similar degree.

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Contents

SEPM Special Publication

Modern and Ancient Carbonate Eolianites: Sedimentology, Sequence Stratigraphy, and Diagenesis

F. E. (Rick) Abegg
F. E. (Rick) Abegg
Chevron USA Production Company, 935 Gravier St., New Orleans, Louisiana 70112, U.S.A.
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David B. Loope
David B. Loope
University of Nebraska, Lincoln, Nebraska 68588, U.S.A.
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Paul M. (Mitch) Harris
Paul M. (Mitch) Harris
Chevron Petroleum Technology Company, Houston, Texas, U.S.A.
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SEPM Society for Sedimentary Geology
Volume
71
ISBN electronic:
9781565761933
Publication date:
January 01, 2001

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