干旱区生态环境知识资源中心(Arid): Palaeoenvironmental and tectonic significance of Miocene lacustrine and palustrine carbonates (Ait Kandoula Formation) in the Ouarzazate Foreland Basin, Morocco

Arid

DOI	10.1016/j.sedgeo.2019.01.009
	Palaeoenvironmental and tectonic significance of Miocene lacustrine and palustrine carbonates (Ait Kandoula Formation) in the Ouarzazate Foreland Basin, Morocco
	Boulton, Sarah J.1; VanDevelde, Justin H.1,2; Grimes, Stephen T.1
通讯作者	Boulton, Sarah J.
来源期刊	SEDIMENTARY GEOLOGY
ISSN	0037-0738
EISSN	1879-0968
出版年	2019
卷号	383 页码:195-215
英文摘要	The Ouarzazate Basin is the southern foreland basin to the High Atlas Mountains in Morocco. The sedimentary fill records a sequence dating from the Eocene to Pleistocene that records the interplay between tectonics and climate. This study presents the first stable isotope and fades analyses of the Middle to Late Miocene Ait Ibrim lacustrine Member (Ait Kandoula Formation). These data test whether the basin was internally draining and enable the development of palaeoenvironmental models for the Middle to Late Miocene. Five sedimentary fades of lacustrine and palustrine limestones are interbeddded with extensive sequences of palaeosols and fluvial sand-stones and conglomerates, often associated with evaporite (gypsum) development. These facies can be divided into two fades associations related to water depth and sub-aerial exposure within the basin. In the Serravalian and early Tortonian shallow water successions dominate the stratigraphy, typical of underfilled foreland basin settings. Furthermore, carbonate delta O-18 and delta C-13 isotopes from the sections show covariance confirming that these carbonates were deposited within a hydrologically closed basin. However, late Tortonian to Messinian carbonates do not demonstrate the covariance typical of endorheic basins. Additionally, the fades association indicates the presence of deeper water lake systems demonstrating that the basin was externally draining at this time. These results question the established view of tectonic stagnation in the Late Miocene and suggest that the Cenozoic sediments of the Ouarzazate Basin contain a rich and untapped record of climate change and tectonic evolution on the edge of the Sahara desert. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Palustrine Lacustrine Terrestrial carbonates Stable isotopes Morocco
类型	Article
语种	英语
国家	England ; USA
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000464771700012
WOS关键词	HIGH-ATLAS MOUNTAINS ; MARRAKECH-HIGH-ATLAS ; DEPOSITIONAL SYSTEMS ; FLUVIAL INCISION ; GRAIN-SIZE ; BELT DADES ; EBRO BASIN ; UPLIFT ; MODEL ; SPAIN
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/2XILL650/218816
作者单位	1.Univ Plymouth, Sch Geog Earth & Environm Sci, Plymouth PL4 8AA, Devon, England; 2.Univ Calif Merced, 5200 North Lake Rd, Merced, CA 95343 USA
推荐引用方式 GB/T 7714	Boulton, Sarah J.,VanDevelde, Justin H.,Grimes, Stephen T.. Palaeoenvironmental and tectonic significance of Miocene lacustrine and palustrine carbonates (Ait Kandoula Formation) in the Ouarzazate Foreland Basin, Morocco[J],2019,383:195-215.
APA	Boulton, Sarah J.,VanDevelde, Justin H.,&Grimes, Stephen T..(2019).Palaeoenvironmental and tectonic significance of Miocene lacustrine and palustrine carbonates (Ait Kandoula Formation) in the Ouarzazate Foreland Basin, Morocco.SEDIMENTARY GEOLOGY,383,195-215.
MLA	Boulton, Sarah J.,et al."Palaeoenvironmental and tectonic significance of Miocene lacustrine and palustrine carbonates (Ait Kandoula Formation) in the Ouarzazate Foreland Basin, Morocco".SEDIMENTARY GEOLOGY 383(2019):195-215.