Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/04241918149 |
Parameterizing parasequences: Importance of shelf gradient, shoreline trajectory, sediment supply, and autoretreat | |
Ainsworth, R. Bruce1; McArthur, Jamie B.1; Lang, Simon C.1,2; Vonk, Adam J.1 | |
2020-01-15 | |
发表期刊 | AAPG BULLETIN |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2020 |
卷号 | 104期号:1页码:53-82 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | The basic reservoir flow unit in shallow-marine depositional systems is the parasequence since it is bounded top and base by regionally extensive shales that can form barriers to fluid flow. As a result, it is the key stratigraphic unit requiring parameterization for both exploration and development purposes. A database comprising 3385 measurement points from 385 parasequences from 28 locations, and 16 different passive margin and foreland basins was compiled from outcrop and subsurface data. Analysis of the data suggests that a mean value for parasequence thickness is 17 m (56 ft); mean parasequence sandstone fraction is 0.60, and mean shoreface sand-body thickness is 8 m (26 ft). The mean maximum-parasequence-progradation-distance is 23 km (14 mi). The results indicate that there are two critical controls that can significantly vary the parameter values stated above: (1) stacked-shoreline trajectory or systems tract and (2) shelf gradient. The analyses indicate that shelf gradient is the most important parameter that has a first-order control on parasequence properties. Shelf gradient in the ancient can be approximated to high-gradient or low-to-moderate-gradient categories via analysis of parasequence thickness change versus progradation distance from wells, mean parasequence thickness, or mean progradation distance from seismic attribute data. Parasequence progradation distance is to some degree predictable if stacked-shoreline trajectory, shelf-gradient category, and mean parasequence thickness are known. The data suggest that there are two types of parasequences: accommodation-dominated and supply-dominated parasequences. The progradation distance of these parasequences are controlled by delta autoretreat mechanisms modulated by the combination of fifth- and fourth-order Milankovitch-scale, orbitally forced, climate-change-driven, sediment-supply cycles interacting with eustatically and tectonically driven accommodation cycles. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000507457800004 |
WOS关键词 | CRETACEOUS BLACKHAWK FORMATION ; SHALLOW-MARINE ; BOOK CLIFFS ; SEQUENCE STRATIGRAPHY ; DEPOSITIONAL ARCHITECTURE ; FACIES ARCHITECTURE ; FORCED REGRESSIONS ; STACKING PATTERNS ; CENTRAL UTAH ; DELTA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/248756 |
专题 | 地球科学 |
作者单位 | 1.Chevron Australia Pty Ltd, Perth, WA, Australia; 2.Univ Western Australia, Ctr Energy Geosci, Sch Earth Sci, Perth, WA, Australia |
推荐引用方式 GB/T 7714 | Ainsworth, R. Bruce,McArthur, Jamie B.,Lang, Simon C.,et al. Parameterizing parasequences: Importance of shelf gradient, shoreline trajectory, sediment supply, and autoretreat[J]. AAPG BULLETIN,2020,104(1):53-82. |
APA | Ainsworth, R. Bruce,McArthur, Jamie B.,Lang, Simon C.,&Vonk, Adam J..(2020).Parameterizing parasequences: Importance of shelf gradient, shoreline trajectory, sediment supply, and autoretreat.AAPG BULLETIN,104(1),53-82. |
MLA | Ainsworth, R. Bruce,et al."Parameterizing parasequences: Importance of shelf gradient, shoreline trajectory, sediment supply, and autoretreat".AAPG BULLETIN 104.1(2020):53-82. |
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