Arid
DOI10.1007/s12517-012-0824-y
Geology and geochemistry of Kurkur bentonites, southern Egypt: provenance, depositional environment, and compositional implication of Paleocene-Eocene thermal maximum
Abou Elmagd, Kamal1; Ali-Bik, Mohamed Wahbi2; Abayazeed, Salwa Dahab2
通讯作者Ali-Bik, Mohamed Wahbi
来源期刊ARABIAN JOURNAL OF GEOSCIENCES
ISSN1866-7511
EISSN1866-7538
出版年2014
卷号7期号:3页码:899-916
英文摘要

A large lower Eocene bentonite deposit at the top of Sinn El-Kaddab plateau, southern Egypt, is investigated. It forms isolated anticlinal hills as mesa and cuesta geomorphic units. The Sinn El-Kaddab plateau (497 m above sea level) with Gebel Abyad in northern Sudan represent the most southern margin of Tethys realm in East Africa. Clay and silt fractions constitute up to 95 % of the bentonite and calcium montmorillonite is the predominant phase (70-87 %). These sediments were deposited during the Paleocene-Eocene Thermal Maximum (PETM) event. Grain-size distribution in conjunction with their geologic setting argues in favor of a low energy deep hemipelagic, restricted basin within the outer shelf zone. They suggest sporadic deposition in a basin characterized by relief oscillation, in response to continuous tectonic uplifting. The sediments of the peripheral parts of the basin are more calcareous and were deposited in an arid climatic condition. Calcium montmorillonite was deposited in subtropical warm climate, with alternating wet and dry seasons. Compositionally, the bentonite shales are basic to intermediate and exhibit a rather limited range of K2O/Na2O and SiO2/Al2O3 ratios. They suggest mature polycyclic silici-clastics as the main provenance and within-plate alkali basalts as a main igneous precursor. They are the product of intensive physical weathering process in response to combined effects of both tectonic disturbance and prevailed climatic conditions during the PETM event. Geochemically, they are interpreted in terms of mixing of two end-members: pure clastic terrigenous component (inherited from the source area) and carbonate-rich matrix.


英文关键词Geology Geochemistry Kurkur bentonite PETM
类型Article
语种英语
国家Egypt
收录类别SCI-E
WOS记录号WOS:000332487800006
WOS关键词SEA-LEVEL ; SEDIMENTS ; DIAGENESIS ; ELEMENTS ; SECTION ; ZR
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/2XILL650/180765
作者单位1.Aswan Univ, Fac Sci, Dept Geol, Aswan, Egypt;
2.Natl Res Ctr, Dept Geol Sci, Cairo, Egypt
推荐引用方式
GB/T 7714
Abou Elmagd, Kamal,Ali-Bik, Mohamed Wahbi,Abayazeed, Salwa Dahab. Geology and geochemistry of Kurkur bentonites, southern Egypt: provenance, depositional environment, and compositional implication of Paleocene-Eocene thermal maximum[J],2014,7(3):899-916.
APA Abou Elmagd, Kamal,Ali-Bik, Mohamed Wahbi,&Abayazeed, Salwa Dahab.(2014).Geology and geochemistry of Kurkur bentonites, southern Egypt: provenance, depositional environment, and compositional implication of Paleocene-Eocene thermal maximum.ARABIAN JOURNAL OF GEOSCIENCES,7(3),899-916.
MLA Abou Elmagd, Kamal,et al."Geology and geochemistry of Kurkur bentonites, southern Egypt: provenance, depositional environment, and compositional implication of Paleocene-Eocene thermal maximum".ARABIAN JOURNAL OF GEOSCIENCES 7.3(2014):899-916.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Abou Elmagd, Kamal]的文章
[Ali-Bik, Mohamed Wahbi]的文章
[Abayazeed, Salwa Dahab]的文章
百度学术
百度学术中相似的文章
[Abou Elmagd, Kamal]的文章
[Ali-Bik, Mohamed Wahbi]的文章
[Abayazeed, Salwa Dahab]的文章
必应学术
必应学术中相似的文章
[Abou Elmagd, Kamal]的文章
[Ali-Bik, Mohamed Wahbi]的文章
[Abayazeed, Salwa Dahab]的文章
相关权益政策
暂无数据
收藏/分享

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。