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GEOREF RECORD

Computer modeling the internal architecture of carbonate platforms

Dan Bosence and Dave Waltham
Computer modeling the internal architecture of carbonate platforms
Geology (Boulder) (January 1990) 18 (1): 26-30

Abstract

A numerical computer model is described that calculates the internal architecture of carbonate platforms in response to varying values of carbonate production, subaerial and submarine erosion, sediment redeposition, and sea-level changes. The computer-generated sections closely resemble large-scale outcrops and interpreted seismic profiles through carbonate platforms. Stillstand and transgressive sequences have prograding and downlapping platform geometries with lagoons developing in transgressive systems. Regressive sequences have downlapping clinoforms and erosional upper surfaces. Glacioeustatic scale cycles have a major control on platform geometry with erosional sequence boundaries developing during low stands and platform drowning occurring during transgressive periods. Lowstand downlapping wedges are minor features when compared with clastic systems, and major progradation and downlap of slope deposits develop with transgressions and flooding of platform tops. Carbonate erosion rates are varied and have an important effect on the morphology of foodback surfaces, which have a major control on platform top production. The computer program contributes to the analysis of carbonate systems in two ways: it gives a visual picture of the quantitative effects of the many parameters controlling carbonate geometries, and it aids quantitative analysis of the architectures and time scales of ancient outcrop or seismic sequences.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 18
Serial Issue: 1
Title: Computer modeling the internal architecture of carbonate platforms
Affiliation: R. Holloway and Bedford New Coll., Dep. Geol., Egham, United Kingdom
Pages: 26-30
Published: 199001
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 27
Accession Number: 1990-017014
Categories: Sedimentary petrologyOceanography
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1990
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