干旱区生态环境知识资源中心(Arid): Ichnology and sedimentology of aeolian and shallow-marine interactions in the Permian Unayzah Group of central Saudi Arabia: Towards a mechanism for infaunal colonization of coastal dune fields and erg margins

Arid

DOI	10.1111/sed.12675
	Ichnology and sedimentology of aeolian and shallow-marine interactions in the Permian Unayzah Group of central Saudi Arabia: Towards a mechanism for infaunal colonization of coastal dune fields and erg margins
	Polo, Camilo A.1; Melvin, John 2; Hooker, Nigel P.3; Rees, Andrew J.4; Gingras, Murray K.5; Pemberton, S. George 5
通讯作者	Polo, Camilo A.
来源期刊	SEDIMENTOLOGY
ISSN	0037-0746
EISSN	1365-3091
出版年	2020
卷号	67 期号:4 页码:1797-1843
英文摘要	This paper documents aeolian and shallow-marine interactions and describes their ichnofossil suites from the early Permian Tinat Member of the Nuayyim Formation of subsurface Saudi Arabia, thereby confirming marine sedimentation in an interval historically interpreted as being dominated by continental settings wherein aeolian processes prevailed. This paper attempts to characterize in situ animal-sediment interactions in coastal dune fields and erg margins in arid to semiarid settings; where the description of organism-sediment relationships, until now, has been focused on the landward portion including freshwater suites. Sedimentological and ichnological assessments in the Tinat Member allowed the identification of aeolian and marginal-marine, tidally influenced interactions in two facies associations that are conformably interbedded. Facies Association 1 includes sediment deposition in aeolian and continental, groundwater table-related environments such as: aeolian dunes (facies 1); dry and damp aeolian interdunes (facies 2 and 3); ephemeral and perennial stream deposits (facies 4 and 5); and palaeosols (facies 6). Facies Association 2 reflects sedimentation in shallow-marine, tidally influenced environments and includes punctuated occurrences of tidal flats and sheltered shallow bay deposits (facies 7 and 8) displaying a brackish-water trace fossil assemblage. This suite exhibits a diminutive, highly stressed mixture with structures reflecting an impoverished Skolithos Ichnofacies and Cruziana Ichnofacies associated with tidal flat deposits displaying synaeresis cracks, lenticular bedding, low-angle and wavy lamination, flaser bedding, reactivation surfaces, carbonaceous double mud drapes, current ripples and tubular tidalites. Aeolian sedimentation and trace fossil associations presented in this paper are significant because they provide evidence for shallow-marine, tidally influenced and aeolian processes in the Unayzah Group during deposition of the Tinat Member of the Nuayyim Formation. More importantly, documenting marine and aeolian interactions and their resulting ichnofossil suite can be used: (i) to build integrated sedimentological and ichnological facies models; and (ii) to characterize the resulting trace fossil association in this particular interactive setting that can be used to identify similar successions elsewhere in the rock record.
英文关键词	Aeolian coastal dunes erg margins Permian shallow-marine Tinat Member trace fossils Unayzah Group
类型	Article
语种	英语
国家	Saudi Arabia ; Canada
收录类别	SCI-E
WOS记录号	WOS:000535281600005
WOS关键词	CEDAR-MESA SANDSTONE ; LOWER CUTLER BEDS ; TRACE FOSSILS ; FRESH-WATER ; STRATIGRAPHIC EVOLUTION ; FLUVIAL DEPOSITS ; DESERT SYSTEM ; SAND SEA ; BASIN ; SEQUENCE
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/2XILL650/318709
作者单位	1.Saudi Aramco, Northern Arabia Reservoir Characterizat Dept, Explorat Org, Dhahran, Saudi Arabia; 2.Saudi Aramco, Explorat Org, Reservoir Characterizat Dept, Dhahran, Saudi Arabia; 3.Saudi Aramco, Explorat Org, Geol Operat Dept, Dhahran, Saudi Arabia; 4.Saudi Aramco, Emerging Unconvent Assets Dept, Dhahran, Saudi Arabia; 5.Univ Alberta, Ichnol Res Grp, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada
推荐引用方式 GB/T 7714	Polo, Camilo A.,Melvin, John,Hooker, Nigel P.,et al. Ichnology and sedimentology of aeolian and shallow-marine interactions in the Permian Unayzah Group of central Saudi Arabia: Towards a mechanism for infaunal colonization of coastal dune fields and erg margins[J],2020,67(4):1797-1843.
APA	Polo, Camilo A.,Melvin, John,Hooker, Nigel P.,Rees, Andrew J.,Gingras, Murray K.,&Pemberton, S. George.(2020).Ichnology and sedimentology of aeolian and shallow-marine interactions in the Permian Unayzah Group of central Saudi Arabia: Towards a mechanism for infaunal colonization of coastal dune fields and erg margins.SEDIMENTOLOGY,67(4),1797-1843.
MLA	Polo, Camilo A.,et al."Ichnology and sedimentology of aeolian and shallow-marine interactions in the Permian Unayzah Group of central Saudi Arabia: Towards a mechanism for infaunal colonization of coastal dune fields and erg margins".SEDIMENTOLOGY 67.4(2020):1797-1843.