气候变化领域集成服务门户(CCPortal): Shelf-edge delta overreach at the shelf break can guarantee the delivery of terrestrial sediments to deep water at all sea-level stands

CCPortal

DOI	10.1306/0511181617117230
	Shelf-edge delta overreach at the shelf break can guarantee the delivery of terrestrial sediments to deep water at all sea-level stands
	Gong C.; Steel R.J.; Wang Y.; Sweet M.L.; Xian B.; Xu Q.; Zhang B.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:1
英文摘要	How and when sediment moves from terrestrial sources to deepwater sinks is a significant area of research.We have used an array of seismic, borehole, and gravity core data sets to explore the timing and magnitude of sediment-routing to Pearl River slope over the last 478 k.y. As predicted by existing sequence stratigraphic models, most sediment dispersal to deep water is shown to have occurred during glacial sea-level falls; however, clastic detritus was still being transported into deep water during interglacial sea-level rises.We suggest that sediment routing to deep water during interglacial sea-level rise is caused by summer monsoon strengthening and resultant warmer and wetter climates, both of which have enhanced effective precipitation and sediment supply. Although somemodels for the delivery of sediment to deep-water basins stress the importance of proximity of canyon heads and coeval shorelines, we observed that sediment routing to deep water could occur regardless of the distance between channel head and coeval shorelines. In the present case, the success of delivery is related to the combined effects of (1) the short duration and high amplitude of sea-level oscillations during the past 478 k.y. and (2) the enhanced sediment supply caused by more humid climates and greater temperature difference between glacial and interglacial period. This hypothesis is supported by (1) observations that outer Pearl River deltas prograded as an apron over preexisting shelf edges for 10-15 km (6-9 mi) and (2) theoccurrence of slope channels extending back to prodelta reaches of Pearl River shelf-edge deltas. © 2019. The American Association of Petroleum Geologists.
语种	英语
scopus关键词	Climate models; Gems; Glacial geology; Rivers; Sea level; Stratigraphy; Deepwater basins; Distance between channels; Interglacial periods; Pearl River delta; Sea-level oscillations; Sediment dispersal; Temperature differences; Terrestrial sediments; Sediments; canyon; data set; deep water; glacial-interglacial cycle; humid environment; sea level change; sediment transport; shelf break; shoreline change; terrestrial deposit; Pearl River [United States]; United States
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/125089
作者单位	State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, China; Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, Shandong University of Science and Technology, Qingdao, Shandong, China; Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; ExxonMobil Upstream Research Company, Spring, TX, United States; Research Center, China National Offshore Oil Corporation, Beijing, China
推荐引用方式 GB/T 7714	Gong C.,Steel R.J.,Wang Y.,et al. Shelf-edge delta overreach at the shelf break can guarantee the delivery of terrestrial sediments to deep water at all sea-level stands[J],2019,103(1).
APA	Gong C..,Steel R.J..,Wang Y..,Sweet M.L..,Xian B..,...&Zhang B..(2019).Shelf-edge delta overreach at the shelf break can guarantee the delivery of terrestrial sediments to deep water at all sea-level stands.AAPG Bulletin,103(1).
MLA	Gong C.,et al."Shelf-edge delta overreach at the shelf break can guarantee the delivery of terrestrial sediments to deep water at all sea-level stands".AAPG Bulletin 103.1(2019).