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Time partitioning in cratonic carbonate rocks

Bruce H. Wilkinson, Bradley N. Opdyke and Thomas J. Algeo
Time partitioning in cratonic carbonate rocks
Geology (Boulder) (November 1991) 19 (11): 1093-1096

Abstract

Dissimilarity in relations between thickness, duration, and accumulation rate in Holocene sections, metre-scale Phanerozoic cycles, and epoch-interval Phanerozoic sequences reflects variation in the distribution of depositional and hiatal time at different scales of observation. Modern accumulation rates are strongly dependent on duration of deposition; lower rates correspond to longer durations. Phanerozoic cycle thicknesses are similar to those of Holocene sections, suggesting that both formed while filling similar amounts of accommodation space. However, accumulation rates of Phanerozoic cycles and sequences are about two orders of magnitude less than in modern settings, and they show neither strong dependence on duration of accumulation nor significant variation over Phanerozoic time. Hence, net accumulation is primarily controlled by regional subsidence rate. These relations also allow for determination of that fraction of cycle period recorded as rock and that corresponding to hiatal time at intercycle boundaries. Depending on subsidence rate and amount of compaction, most cratonic carbonate units accumulated over 3% to 30% of the time represented by sequences in which they occur.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 19
Serial Issue: 11
Title: Time partitioning in cratonic carbonate rocks
Affiliation: Univ. Mich., Dep. Geol. Sci., Ann Arbor, MI, United States
Pages: 1093-1096
Published: 199111
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 8
Accession Number: 1991-047311
Categories: Sedimentary petrologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Univ. Cincinnati, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1991
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