Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.sedgeo.2012.09.013 |
Stacked, Lower Miocene tide-dominated estuary deposits in a transgressive succession, Western Desert, Egypt | |
Hassan, Safiya M.1,2,3; Steel, Ronald J.2; El Barkooky, Ahmed4; Hamdan, Mohamed4; Olariu, Cornel2; Helper, Mark A.2 | |
通讯作者 | Hassan, Safiya M. |
来源期刊 | SEDIMENTARY GEOLOGY |
ISSN | 0037-0738 |
EISSN | 1879-0968 |
出版年 | 2012 |
卷号 | 282页码:241-255 |
英文摘要 | The net transgressive Lower Miocene Moghra Formation of Egypt is a sandy estuarine complex consisting of a series of stratigraphic units that reflect repeated transgressive to regressive shoreline movements across the Burdigalian (Lower Miocene) coastal landscape. The transgressive part of each unit is preserved atop a deep erosional scour surface, and consists of tidal-fluvial sandstones with tree logs and vertebrate bones that transition up to cross-stratified, tidal estuarine channel deposits and then to open-marine, shelf mudstones and limestones. In contrast, the regressive part is thinly developed and consists of thin-bedded, fossiliferous shelf mudstones that pass upward to thin, tide-influenced delta-front deposits. Each of the nine transgressive-regressive units of the Moghra Formation is capped by a river-scour surface that severely truncates the underlying regressive half-unit. Regional tectonic subsidence and an overall decreasing influx of clastic sediment accounts for the accumulation of the Moghra Formation and its overall transgressive character. The high frequency relative base-level changes reflected by the transgressive-regressive units (averaging <350 kyr) that punctuate the overall transgressive stratigraphic trend are thought to have been driven by (1) sea-level changes caused by recently-documented variations in East Antarctic ice-sheet volume during the Lower Miocene, and/or by (2) variation in the large-scale influx of sediment to the region (during continuous tectonic subsidence). The relative importance of the sea-level (eustatic fall) vs. supply drive (deep fluvial scour) mechanisms for producing the repeated and widespread Burdigalian incision surfaces in the Moghra succession cannot easily be determined. (c) 2012 Elsevier B.V. All rights reserved. |
英文关键词 | Moghra Formation Burdigalian Egypt Estuaries Tide-dominated |
类型 | Review |
语种 | 英语 |
国家 | Egypt ; USA ; South Africa |
收录类别 | SCI-E |
WOS记录号 | WOS:000313473500018 |
WOS关键词 | SEQUENCE STRATIGRAPHY ; SEGO SANDSTONE ; BOOK-CLIFFS ; EBRO BASIN ; ARCHITECTURE ; MODEL ; SEDIMENTOLOGY ; UTAH ; SEDIMENTATION ; ENVIRONMENTS |
WOS类目 | Geology |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/175003 |
作者单位 | 1.Beni Suef Univ, Dept Geol, Bani Suwayf 65211, Egypt; 2.Univ Texas Austin, Dept Geol Sci, Austin, TX 78712 USA; 3.Nelson Mandela Metropolitan Univ, AEON, ZA-6001 Port Elizabeth, South Africa; 4.Cairo Univ, Dept Geol, Giza 12613, Egypt |
推荐引用方式 GB/T 7714 | Hassan, Safiya M.,Steel, Ronald J.,El Barkooky, Ahmed,et al. Stacked, Lower Miocene tide-dominated estuary deposits in a transgressive succession, Western Desert, Egypt[J],2012,282:241-255. |
APA | Hassan, Safiya M.,Steel, Ronald J.,El Barkooky, Ahmed,Hamdan, Mohamed,Olariu, Cornel,&Helper, Mark A..(2012).Stacked, Lower Miocene tide-dominated estuary deposits in a transgressive succession, Western Desert, Egypt.SEDIMENTARY GEOLOGY,282,241-255. |
MLA | Hassan, Safiya M.,et al."Stacked, Lower Miocene tide-dominated estuary deposits in a transgressive succession, Western Desert, Egypt".SEDIMENTARY GEOLOGY 282(2012):241-255. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。