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GEOREF RECORD

Highstand shedding of carbonate platforms

Wolfgang Schlager, John J. G. Reijmer and Andre Droxler
Highstand shedding of carbonate platforms
Journal of Sedimentary Research, Section B: Stratigraphy and Global Studies (August 1994) 64 (3): 270-281

Abstract

The term "highstand shedding" means that a depositional system sheds most sediment into the adjacent basin during highstands of sea level. In the Quaternary, highstand shedding has been observed around all rimmed carbonate platforms studied to date. Highstand shedding in the distant past is more difficult to prove for want of well-documented sea-level curves and limited stratigraphic resolution. Nonetheless, several detailed studies strongly suggest highstand shedding of ancient platforms, too. The reasons for carbonate highstand shedding are twofold: (1) the productive area increases manyfold when the flat platform top is flooded during highstands, and (2) highstand platform sediments rapidly lithify during sea-level falls when the sea floors are winnowed due to lowering of wave base or when sediments become exposed to fresh water. The causes of highstand shedding also determine the limitations of this principle. Highstand shedding is most pronounced on low-latitude, rimmed platforms. It is reduced on ramps and in cool-water carbonate systems; furthermore, the effect is damped when the lowstand wedge can expand into a full-size platform during long-lasting lowstands of sea level. Highstand shedding ceases when the platform is drowned during a sea-level rise. All in all, the principle of highstand shedding of carbonate platforms is as robust as the principle of lowstand shedding of siliciclastic systems. Both are caused by fundamental attributes of the respective depositional system and both have their limitations and exceptions.


ISSN: 1073-1318
Serial Title: Journal of Sedimentary Research, Section B: Stratigraphy and Global Studies
Serial Volume: 64
Serial Issue: 3
Title: Highstand shedding of carbonate platforms
Affiliation: Free University, Earth Sciences, Amsterdam, Netherlands
Pages: 270-281
Published: 19940815
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 93
Accession Number: 1994-055923
Categories: OceanographyQuaternary geologySedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Rice University, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 199424
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