气候变化领域集成服务门户(CCPortal): Deep-water channel morphologies, architectures, and population densities in relation to stacking trajectories and climate states

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DOI	10.1130/B35431.1
	Deep-water channel morphologies, architectures, and population densities in relation to stacking trajectories and climate states
	Gong C.; Steel R.J.; Qi K.; Wang Y.
发表日期	2020
ISSN	167606
起始页码	287
结束页码	306
卷号	133 期号:2021-01-02
英文摘要	Deep-water channel morphologies, stratigraphy, and population densities in relation to stacking trajectories and climate states remain poorly constrained, and are highlighted by a sampling of 142 submarine channels. From the perspective of channel kinematics, turbidite channels exhibit tripartite lateral -random - vertical trajectories or unidirectional channel-complex trajectories, whereas contourite channels display oblique upslope trajectories. Turbidite channels tend to be deep and narrow and have two to three times more lateral migration than contourite channels, whereas contourite channels tend to be shallow and wide and have two to three times more vertical accretion. We relate such differences between channel morphology and stratigraphy to density contrast between fow and ambient fuid for contourite versus turbidite channels, which seems to have favored lateral channel migration in turbidite channels but channel thalweg deposition in contourite channels. Additionally, channels formed during a greenhouse climate state display low degrees of morphological and architectural variations, and are the minority in our global channel database (8% of total), although the Earth has been in a greenhouse state for 72% of the past 540 m.y. Icehouse channels, in contrast, exhibit high amplitudes of morphological and architectural variations and are the majority in the global channel family (92% of total), although the Earth has been in an icehouse state for 18% of the past 540 m.y. Such differences in channel-population densities between greenhouse and icehouse climates (8% versus 92%) suggest a weak global correlation of channelpopulation densities with warming greenhouse climates. © 2020 Geological Society of America
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184833
作者单位	State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, 102249, China; College of Geosciences, China University of Petroleum, Beijing, 102249, China; Department of Geological Sciences, Jackson School of Geosciences, University of Texas, Austin, Texas 7871, United States
推荐引用方式 GB/T 7714	Gong C.,Steel R.J.,Qi K.,et al. Deep-water channel morphologies, architectures, and population densities in relation to stacking trajectories and climate states[J],2020,133(2021-01-02).
APA	Gong C.,Steel R.J.,Qi K.,&Wang Y..(2020).Deep-water channel morphologies, architectures, and population densities in relation to stacking trajectories and climate states.Bulletin of the Geological Society of America,133(2021-01-02).
MLA	Gong C.,et al."Deep-water channel morphologies, architectures, and population densities in relation to stacking trajectories and climate states".Bulletin of the Geological Society of America 133.2021-01-02(2020).