干旱区生态环境知识资源中心(Arid): ARCHITECTURE OF A RIVER-DOMINATED, WAVE- AND TIDE-INFLUENCED, PRE-VEGETATION BRAID DELTA: CAMBRIAN MIDDLE MEMBER OF THE WOOD CANYON FORMATION, SOUTHERN MARBLE MOUNTAINS, CALIFORNIA, USA

Arid

DOI	10.2110/jsr.2020.023
	ARCHITECTURE OF A RIVER-DOMINATED, WAVE- AND TIDE-INFLUENCED, PRE-VEGETATION BRAID DELTA: CAMBRIAN MIDDLE MEMBER OF THE WOOD CANYON FORMATION, SOUTHERN MARBLE MOUNTAINS, CALIFORNIA, USA
	Muhlbauer, Jason G.; Fedo, Christopher M.
通讯作者	Muhlbauer, JG
来源期刊	JOURNAL OF SEDIMENTARY RESEARCH
ISSN	1527-1404
EISSN	1938-3681
出版年	2020
卷号	90 期号:9 页码:1011-1036
英文摘要	Across the Mojave Desert of southeastern California, outcrops of the Cambrian middle member of the Wood Canyon Formation preserve the deposits of pre-vegetation braided-fluvial and braid-delta environments. One 78-meter-thick section in the southern Marble Mountains, documented here through detailed stratigraphic logging, facies analysis, architectural panels based on Structure-from-Motion models, and a suite of paleocurrent and accretion-surface measurements, provides insight into the development of a river-dominated, wave- and tide-influenced braid delta at the distal end of a continent-scale braidplain. In contrast to other pre-Devonian braid-delta strata, in which mudrock is largely absent, the greater part of the middle member system contains over 5% mudstone. Four fades associations, FA4-7, constitute the middle member section and represent (in order of stratigraphic height) a braidplain-to-delta transition (FA4), proximal braid delta (FAS), distal braid delta (FAO, and upper braid-delta front (FA7). The 20 meters of braidplain-to-delta transition strata are largely similar to those of fluvial middle member sections, containing approximately 2% mudstone, unimodal north-northwest paleoflow, and vertical, downstream, and downstream-lateral accretion elements representing compound barforms and channel fills. Above, each braid-delta facies association (FA5-7) preserves high-sinuosity paleocurrent indicators, 6-12% mudstone, and symmetrical, wave-formed sand waves. Decimeter-thick fluid-mud deposits found chiefly in FA6 and less commonly in FA7 indicate the presence of a turbidity-maximum zone that records brackish-water conditions in the distal braid delta. Trace fossils concentrated in FA7 suggest that metazoans were confined to the upper braid-delta front and could not tolerate the variable salinity of the braid delta. increased marine influence with stratigraphic height requires gradual transgression during deposition of the middle member of the Wood Canyon Formation, possibly as part of a lowstand systems tract.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000595068100002
WOS关键词	NEOPROTEROZOIC JOHNNIE FORMATION ; MARGIN HINGE ZONE ; FLUID-MUD ; MARINE TRANSITION ; MOJAVE-DESERT ; SOUTHEASTERN CALIFORNIA ; DEPOSITIONAL SYSTEMS ; ALLUVIAL FACIES ; UNITED-STATES ; FAN-DELTA
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/2XILL650/327811
作者单位	[Muhlbauer, Jason G.; Fedo, Christopher M.] Univ Tennessee, Dept Earth & Planetary Sci, 1621 Cumberland Ave,602 Strong Hall, Knoxville, TN 37996 USA
推荐引用方式 GB/T 7714	Muhlbauer, Jason G.,Fedo, Christopher M.. ARCHITECTURE OF A RIVER-DOMINATED, WAVE- AND TIDE-INFLUENCED, PRE-VEGETATION BRAID DELTA: CAMBRIAN MIDDLE MEMBER OF THE WOOD CANYON FORMATION, SOUTHERN MARBLE MOUNTAINS, CALIFORNIA, USA[J],2020,90(9):1011-1036.
APA	Muhlbauer, Jason G.,&Fedo, Christopher M..(2020).ARCHITECTURE OF A RIVER-DOMINATED, WAVE- AND TIDE-INFLUENCED, PRE-VEGETATION BRAID DELTA: CAMBRIAN MIDDLE MEMBER OF THE WOOD CANYON FORMATION, SOUTHERN MARBLE MOUNTAINS, CALIFORNIA, USA.JOURNAL OF SEDIMENTARY RESEARCH,90(9),1011-1036.
MLA	Muhlbauer, Jason G.,et al."ARCHITECTURE OF A RIVER-DOMINATED, WAVE- AND TIDE-INFLUENCED, PRE-VEGETATION BRAID DELTA: CAMBRIAN MIDDLE MEMBER OF THE WOOD CANYON FORMATION, SOUTHERN MARBLE MOUNTAINS, CALIFORNIA, USA".JOURNAL OF SEDIMENTARY RESEARCH 90.9(2020):1011-1036.