气候变化领域集成服务门户(CCPortal): Critical differences in sediment delivery and partitioning between marine and lacustrine basins: A comparison of marine and lacustrine aggradational to progradational clinothem pairs

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DOI	10.1130/B32042.1
	Critical differences in sediment delivery and partitioning between marine and lacustrine basins: A comparison of marine and lacustrine aggradational to progradational clinothem pairs
	Gong C.; Sztanó O.; Steel R.J.; Xian B.; Galloway W.E.; Bada G.
发表日期	2019
ISSN	167606
起始页码	766
结束页码	781
卷号	131 期号:2021-05-06
英文摘要	Twenty-seven marine and 23 lacustrine clinothem pairs were recognized and analyzed in Qiongdongnan Basin and Pannonian Basin, respectively. A comparison of their architecture highlighted some critical differences in sediment delivery and partitioning between the marine and closed lacustrine basins. In marine Qiongdongnan Basin, rising but forward-moving shelf-edge trajectories and clinoforms with a height of hundreds of meters commonly link downdip to absent or limited sandy bottomsets, whereas the opposite occurs in the lacustrine Pannonian Basin, where very thick bottomsets developed in front of highly aggradational clinoforms. A further comparison of strongly progradational clinothem sets with fairly flat shelfedge trajectories suggests that relatively thick versus thin or absent sandy bottomsets occur in the marine and lacustrine settings, respectively. The main reason for this marked contrast in sediment partitioning across marine versus lacustrine clinoforms is climate, where a wet-dry climate model needs to be used to explain sediment dispersal to the floor of deep Lake Pannon. During the humid halfcycle, catchment precipitation and sediment flux into Lake Pannon were probably high, and coeval lake-level rise and reduced salinity likely increased shelf accommodation and caused topset aggradation of the forwardmoving clinothems. This, in turn, resulted in enhanced hyperpycnal flows and thick bottomsets on the lake-basin floor. During the semiarid half-cycle, lake level was fairly stable, and both the catchment precipitation and sediment flux into Lake Pannon were probably reduced, causing some increase in the salinity, less frequent hyperpycnal flows, and resultant short downlapping clinothems lacking or with only thin bottomsets. Critical differences in sediment delivery and partitioning between marine and lacustrine basins, as highlighted by a comparison of aggradational to progradational clinothem pairs documented herein, draw attention to the pitfall of mechanically applying conventional marine sequence stratigraphy to lacustrine basins. © 2018 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/184919
作者单位	State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing, 102249, China; College of Geosciences, China University of Petroleum (Beijing), Beijing, 102249, China; Department of Geological Sciences, Jackson School of Geosciences, The University of Texas, Austin, TX 78712, United States; Department of Physical and Applied Geology, Eötvös Loránd University, Pázmány Péter sétány 1/c, Budapest, 1117, Hungary; Institute for Geophysics, Jackson School of Geosciences, The University of Texas at Austin, 10100 Burnet Road, Austin, TX 78758-4445, United States; TXM Oil and Gas Exploration Ltd., Infopark Street 1, Budapest, 1117, Hungary
推荐引用方式 GB/T 7714	Gong C.,Sztanó O.,Steel R.J.,et al. Critical differences in sediment delivery and partitioning between marine and lacustrine basins: A comparison of marine and lacustrine aggradational to progradational clinothem pairs[J],2019,131(2021-05-06).
APA	Gong C.,Sztanó O.,Steel R.J.,Xian B.,Galloway W.E.,&Bada G..(2019).Critical differences in sediment delivery and partitioning between marine and lacustrine basins: A comparison of marine and lacustrine aggradational to progradational clinothem pairs.Bulletin of the Geological Society of America,131(2021-05-06).
MLA	Gong C.,et al."Critical differences in sediment delivery and partitioning between marine and lacustrine basins: A comparison of marine and lacustrine aggradational to progradational clinothem pairs".Bulletin of the Geological Society of America 131.2021-05-06(2019).