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DOI | 10.1016/j.jafrearsci.2005.02.005 |
Depositional facies, environments and sequence stratigraphic interpretation of the Middle Triassic-Lower Cretaceous (pre-late Albian) succession in Arif El-Naga anticline, Northeast Sinai, Egypt | |
El-Azabi, MH; El-Araby, A | |
通讯作者 | El-Araby, A |
来源期刊 | JOURNAL OF AFRICAN EARTH SCIENCES
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ISSN | 1464-343X |
EISSN | 1879-1956 |
出版年 | 2005 |
卷号 | 41期号:1-2页码:119-143 |
英文摘要 | The Middle Triassic-Lower Cretaceous (pre-Late Albian) succession of Arif El-Naga anticline comprises various distinctive facies and environments that are connected with eustatic relative sea-level changes, local/regional tectonism, variable sediment influx and base-level changes. It displays six unconformity-bounded depositional sequences. The Triassic deposits are divided into a lower clastic facies (early Middle Triassic sequence) and an upper carbonate unit (late Middle- and latest Middle/early Late Triassic sequences). The early Middle Triassic sequence consists of sandstone with shale/mudstone interbeds that formed under variable regimes, ranging from braided fluvial, lower shoreface to beach foreshore. The marine part of this sequence marks retrogradational and progradational parasequences of transgressive- and highstand systems tract deposits respectively. Deposition has taken place under warm semi-arid climate and a steady supply of elastics. The late Middle- and latest Middle/early Late Triassic sequences are carbonate facies developed on an extensive shallow marine shelf under dry-warm climate. The late Middle Triassic sequence includes retrogradational shallow subtidal oyster rudstone and progradational lower intertidal lime-mudstone parasequences that define the transgressive- and highstand systems tracts respectively. it terminates with upper intertidal oncolitic packstone with bored upper surface. The next latest Middle/early Late Triassic sequence is marked by lime-mudstone, packstone/grainstone and algal stromatolitic bindstone with minor shale/mudstone. These lower intertidal/shallow subtidal deposits of a transgressive-systems tract are followed upward by progradational highstand lower intertidal lime-mudstone deposits. The overlying Jurassic deposits encompass two different sequences. The Lower Jurassic sequence is made up of intercalating lower intertidal lime-mudstone and wave-dominated beach foreshore sandstone which formed during a short period of rising sea-level with a relative increase in clastic supply. The Middle-Upper Jurassic sequence is represented by cycles of cross-bedded sandstone topped with thin mudstone that accumulated by northerly flowing braided-streams accompanying regional uplift of the Arabo-Nubian shield. It is succeeded by another regressive fluvial sequence of Early Cretaceous age due to a major eustatic sea-level fall. The Lower Cretaceous sequence is dominated by sandy braided-river deposits with minor overbank fines and basal debris flow conglomerate. (c) 2005 Elsevier Ltd. All rights reserved. |
英文关键词 | depositional facies environment sequence stratigraphy Arif El-Naga Sinai |
类型 | Article |
语种 | 英语 |
国家 | Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000229685900007 |
WOS关键词 | ROCKS ; BIOSTRATIGRAPHY ; CLASSIFICATION ; FORAMINIFERA ; JORDAN ; BASIN |
WOS类目 | Geosciences, Multidisciplinary |
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/2XILL650/149360 |
作者单位 | (1)Cairo Univ, Fac Sci, Dept Geol, Cairo, Egypt |
推荐引用方式 GB/T 7714 | El-Azabi, MH,El-Araby, A. Depositional facies, environments and sequence stratigraphic interpretation of the Middle Triassic-Lower Cretaceous (pre-late Albian) succession in Arif El-Naga anticline, Northeast Sinai, Egypt[J],2005,41(1-2):119-143. |
APA | El-Azabi, MH,&El-Araby, A.(2005).Depositional facies, environments and sequence stratigraphic interpretation of the Middle Triassic-Lower Cretaceous (pre-late Albian) succession in Arif El-Naga anticline, Northeast Sinai, Egypt.JOURNAL OF AFRICAN EARTH SCIENCES,41(1-2),119-143. |
MLA | El-Azabi, MH,et al."Depositional facies, environments and sequence stratigraphic interpretation of the Middle Triassic-Lower Cretaceous (pre-late Albian) succession in Arif El-Naga anticline, Northeast Sinai, Egypt".JOURNAL OF AFRICAN EARTH SCIENCES 41.1-2(2005):119-143. |
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