干旱区生态环境知识资源中心(Arid): Enigmatic clastic pipe swarms and implications for fluidization dynamics in aeolian deposits

Arid

DOI	10.1111/sed.12491
	Enigmatic clastic pipe swarms and implications for fluidization dynamics in aeolian deposits
	Chan, Marjorie A.1; Hasiotis, Stephen T.2; Parrish, Judith T.3
通讯作者	Chan, Marjorie A.
来源期刊	SEDIMENTOLOGY
ISSN	0037-0746
EISSN	1365-3091
出版年	2019
卷号	66 期号:2 页码:513-535
英文摘要	Soft-sediment deformation of contorted and massive sandstone is common throughout much of the siliciclastic record, but clastic pipes represent a distinctive class of pressurized synsedimentary features. Remarkable centimetre to metre-scale clastic pipe exposures in the Jurassic Navajo Sandstone of Utah (USA) establish a range of pipe sizes, expressions and relationships to the host rock in an erg margin setting, traditionally thought to be just a dry desert system. In particular, the field and laboratory characterizations of cylindrical pipes show internal concentric, annular rings that imply water fluidization, with alignment of long grain axes due to shear flow along pipe margins. Central interior parts of decimetre-scale pipes appear massive in plan view, but display weakly developed pseudobedding from post-pressure release, gravitational settling in the cross-sectional view. Deformation features of conjugate fractures, ring faults, hypotrochoid patterns (geometric arcs and circles) and breccia in the host material reflect both brittle and ductile behaviour in response to the fluidization and injection of the clastic pipes. The stratigraphic context of individual pipes and the stratabound intervals of pipe features imply dynamic deformation nearly coincident with deposition in this Early Jurassic aeolian system related to multiple factors of groundwater expulsion, timing and local host sediment properties that influenced pipe development. Although the pipe features might be easily overlooked as a smaller scale feature of soft-sediment deformation in dune deposits, these are valuable environmental indications of disrupted fluid pathways within porous, reservoir quality sands, associated with possible combinations of periodic springs, high water-table conditions and strong ground-motion events. These pipe examples may be important analogues where exposures are not so clear, with applications to diverse modern and ancient clastic settings internationally on Earth as well as in planetary explorations such as on Mars.
英文关键词	Aeolian clastic pipes erg fluidization injectites seismites soft-sediment deformation
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000461255500006
WOS关键词	JURASSIC NAVAJO SANDSTONE ; SOFT-SEDIMENT DEFORMATION ; UPHEAVAL DOME ; CYLINDRICAL STRUCTURES ; EOLIAN SANDSTONES ; SOUTHEASTERN UTAH ; COLORADO PLATEAU ; IMPACT ORIGIN ; NATIONAL-PARK ; SAND
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/2XILL650/218825
作者单位	1.Univ Utah, Dept Geol & Geophys, 115 S 1460 E,Rm 383 FASB, Salt Lake City, UT 84112 USA; 2.Univ Kansas, Dept Geol, 1475 Jayhawk Blvd Rm 120,Lindley Hall, Lawrence, KS 66045 USA; 3.Univ Idaho, Dept Geol Sci, 875 Perimeter Dr,MS 3022, Moscow, ID 83844 USA
推荐引用方式 GB/T 7714	Chan, Marjorie A.,Hasiotis, Stephen T.,Parrish, Judith T.. Enigmatic clastic pipe swarms and implications for fluidization dynamics in aeolian deposits[J],2019,66(2):513-535.
APA	Chan, Marjorie A.,Hasiotis, Stephen T.,&Parrish, Judith T..(2019).Enigmatic clastic pipe swarms and implications for fluidization dynamics in aeolian deposits.SEDIMENTOLOGY,66(2),513-535.
MLA	Chan, Marjorie A.,et al."Enigmatic clastic pipe swarms and implications for fluidization dynamics in aeolian deposits".SEDIMENTOLOGY 66.2(2019):513-535.