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Sediment Accumulation Rates and the Completeness of Stratigraphic Sections
Abstract
A compilation of nearly 25,000 rates of sediment accumulation shows that they are extremely variable, spanning at least 11 orders of magnitude. Much of this variation results from compiling rates determined for different time spans: there is a systematic trend of falling mean rate with increasing time span. The gradients of such trends vary with environment of deposition. Although measurement error and compaction contribute to these regressions, they are primarily the consequence of unsteady, discontinuous sedimentation. The essential character of the unsteadiness may be cyclic or random, but net accumulation is characterized by fluctuations whose magnitudes increase with increasing recurrence interval. Ratios of median long- to short-term accumulation rates provide a measure of the expected completeness of sedimentary stratigraphic sections, at the time scale of the short-term rate. Expected completeness deteriorates as finer time scales are considered.
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Metadata
- Authors
- Sadler, P. M.
- Venue
- The Journal of Geology
- Publisher
- University of Chicago Press
- Published
- 1981-09
- Volume
- 89
- Issue
- 5
- Pages
- 569-584
- ISSN
- 0022-1376 (ISSN-L)
- 1537-5269
- OpenAlex
- W2045443252
- Cited by
- 1,231
- References
- 0
- FWCI
- 24.80
- Type
- journal article
- Language
- en
- Open access
- closed
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