干旱区生态环境知识资源中心(Arid): Holocene sediment distribution in the Al Wajh platform lagoon (northern Red Sea, Saudi Arabia), a modern analogue for large rift basin carbonate platforms

Arid

DOI	10.1111/sed.12955
	Holocene sediment distribution in the Al Wajh platform lagoon (northern Red Sea, Saudi Arabia), a modern analogue for large rift basin carbonate platforms
	Petrovic, Alexander; Ariza Fuentes, Manuel; Putri, Indah; Yahaya, Liyana Nur; Khanna, Pankaj; Purkis, Sam J.; Vahrenkamp, Volker
通讯作者	Petrovic, A (corresponding author), King Abdullah Univ Sci & Technol, Ali I Al Naimi Petr Engn Res Ctr, CaResS Geol Grp, Bldg 5, Thuwal 239556900, Makkah, Saudi Arabia.
来源期刊	SEDIMENTOLOGY
ISSN	0037-0746
EISSN	1365-3091
出版年	2021-12
英文摘要	Sedimentary patterns and hydrodynamic transport processes on modern carbonate platforms in arid climates are understudied compared to platforms in humid-tropical climates. The Al Wajh platform - located in the Arabian-African desert belt - is a large land-attached carbonate platform in the Red Sea providing an excellent opportunity to fill this gap. The platform covers some 1800 km(2) and is almost completely enclosed by a 115 km long reef-shoal belt. More than 200 sediment surface samples were analyzed in order to investigate the lateral sediment distribution within the lagoon. The seafloor map was refined integrating sample depths with previous published bathymetric information. Conductivity and temperature profiles were measured to study the lagoonal water body. The lagoon is dominated by poorly sorted, sand-sized sediments with low total organic carbon content, while carbonate fines content shows significant lateral variation. Aragonite dominates sediment mineralogy with high-Mg calcite and low-Mg calcite being significant admixtures. Fine-grained siliciclastics are found across the entire lagoon, with angular quartz locally enriched in nearshore and distal areas. Seven component assemblages are defined ranging from benthic foraminifera and mollusc-rich to reef debris-rich component assemblages. Platform-interior ooids are for the first time documented from the modern Red Sea. The heterogeneous distribution of carbonate fines shows no water depth related trends, while the component assemblage arrangement is depth related. Hydrodynamics are interpreted to be the main mechanism controlling carbonate fines distribution in the lagoon. A nearshore enrichment of angular sand-sized quartz suggests influx through wadis during flash floods, while an almost even distribution of fine-grained siliciclastics possibly indicate aeolian import. These findings provide new insights to the importance of hydrodynamic transport processes for sediment distribution in a land-attached platform lagoon in an arid climate. Finally, this study presents a comparison with other modern platforms and discusses implications for improving strategies of hydrocarbon field development in rift-basin carbonates.
英文关键词	Dunham texture grain size mineralogy ooids sediment heterogeneities total organic carbon
类型	Article ; Early Access
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000728232500001
WOS关键词	GREAT BAHAMA BANK ; DEPOSITIONAL FACIES ; LIME MUD ; REEF ENVIRONMENTS ; ZABARGAD-ISLAND ; CORAL-REEFS ; WEST-COAST ; GULF ; BELIZE ; WHITINGS
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/2XILL650/374701
作者单位	[Petrovic, Alexander; Ariza Fuentes, Manuel; Putri, Indah; Yahaya, Liyana Nur; Khanna, Pankaj; Vahrenkamp, Volker] King Abdullah Univ Sci & Technol, Ali I Al Naimi Petr Engn Res Ctr, CaResS Geol Grp, Bldg 5, Thuwal 239556900, Makkah, Saudi Arabia; [Purkis, Sam J.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, CSL Ctr Carbonate Res, Dept Marine Geosci, Miami, FL 33149 USA
推荐引用方式 GB/T 7714	Petrovic, Alexander,Ariza Fuentes, Manuel,Putri, Indah,et al. Holocene sediment distribution in the Al Wajh platform lagoon (northern Red Sea, Saudi Arabia), a modern analogue for large rift basin carbonate platforms[J],2021.
APA	Petrovic, Alexander.,Ariza Fuentes, Manuel.,Putri, Indah.,Yahaya, Liyana Nur.,Khanna, Pankaj.,...&Vahrenkamp, Volker.(2021).Holocene sediment distribution in the Al Wajh platform lagoon (northern Red Sea, Saudi Arabia), a modern analogue for large rift basin carbonate platforms.SEDIMENTOLOGY.
MLA	Petrovic, Alexander,et al."Holocene sediment distribution in the Al Wajh platform lagoon (northern Red Sea, Saudi Arabia), a modern analogue for large rift basin carbonate platforms".SEDIMENTOLOGY (2021).