Forced regression
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- Ito Makoto
- Department of Earth Sciences, Chiba University
Bibliographic Information
- Other Title
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- 強制海退(原標題は英語)
- 用語解説 Forced regression
- ヨウゴ カイセツ Forced regression
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Abstract
In this commentary article, architecture, component lithofacies, and bounding surface features of forced-regressive deposits are discussed in terms of a four-fold classification scheme of sequence stratigraphy in siliciclastic successions. Forced-regressive deposits are interpreted to represent a falling-stage systems tract, which develops mainly in a shallow marine environment, and to be equivalent chronostratigraphically to basin-floor-fan and slope-fan deposits in a deep-water environment. The standard sequence-stratigraphic model classifies shelf-margin deltas as a component of the lowstand wedge, which is interpreted to develop over the basin-floor-fan and slope-fan deposits. However, shelf-margin deltas, in general, consist of downstepping forced-regressive and overlying progradational and aggradational deposits, which can be assigned, respectively, to falling-stage and lowstand systems tracts of the four-fold classification scheme. Recognition of forced-regressive deposits depends on appropriate definition of datum for the correlation of stratigraphic successions and on detailed process-oriented lithofacies analysis that is crucial for the identification of depositional events responding to a relative sea-level fall. Thus, practical approaches of facies analysis and sequence-stratigrapy should constantly be upgraded for the better understand of formative processes, 3D geometry, distribution patterns, and heterogeneity of forced-regressive deposits.
Journal
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- Journal of the Japanese Association for Petroleum Technology
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Journal of the Japanese Association for Petroleum Technology 70 (4), 358-369, 2005
The Japanese Association for Petroleum Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001204062763904
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- NII Article ID
- 10015419440
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- NII Book ID
- AN00130976
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- ISSN
- 18814131
- 03709868
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- NDL BIB ID
- 7449162
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed