Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Wave‐Enhanced Sediment‐Gravity Flows in Bohai Bay Lacustrine Basin, Eastern China

Wave‐Enhanced Sediment‐Gravity Flows in Bohai Bay Lacustrine Basin, Eastern China Sequences of wave‐enhanced sediment‐gravity flows (WESGFs) have been widely recognized in the marine shelf environment. In this study, we show observations of WESGF deposits in lacustrine settings using well core and thin section data from the Paleogene in the Jiyang sub‐basin, Bohai Bay basin, eastern China. The findings of this study include the following: 1) the sequence of WESGFs in the lacustrine basin is similar to that of marine; it consists of three units, MF1 unit: siltstone with basal erosion surface, MF2 unit: silt‐streaked claystone, and MF3 unit: silty‐mudstone; and 2) prodelta sand sheets are found in the lacustrine WESGF sequence and are classified as the MFd unit: clay‐streaked siltstone. However, because the system size and variability in hydrodynamic conditions are different between the lacustrine and marine basins, lacustrine WESGFs do appear to have three distinguishable features: 1) the sediment grain size and sand content are slightly higher than those of the marine WESGFs; 2) lacustrine WESGFs may contain prodelta sediments or sedimentary sequences of other types of gravity flows, such as hyperpycnal flows; and 3) the scale of the sedimentary structures for lacustrine WESGFs is smaller. The WESGFs found in the continental lacustrine basin provide a new model for sediment dispersal processes in lake environments and may be helpful to explain and predict the distribution of sandy reservoirs for oil and gas exploration. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Geologica Sinica (English Edition) Wiley

Wave‐Enhanced Sediment‐Gravity Flows in Bohai Bay Lacustrine Basin, Eastern China

Download PDF
16 pages

Loading next page...
 
/lp/wiley/wave-enhanced-sediment-gravity-flows-in-bohai-bay-lacustrine-basin-OsrzD0LJU1

References (40)

Publisher
Wiley
Copyright
Copyright © 2018 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1000-9515
eISSN
1755-6724
DOI
10.1111/1755-6724.13737
Publisher site
See Article on Publisher Site

Abstract

Sequences of wave‐enhanced sediment‐gravity flows (WESGFs) have been widely recognized in the marine shelf environment. In this study, we show observations of WESGF deposits in lacustrine settings using well core and thin section data from the Paleogene in the Jiyang sub‐basin, Bohai Bay basin, eastern China. The findings of this study include the following: 1) the sequence of WESGFs in the lacustrine basin is similar to that of marine; it consists of three units, MF1 unit: siltstone with basal erosion surface, MF2 unit: silt‐streaked claystone, and MF3 unit: silty‐mudstone; and 2) prodelta sand sheets are found in the lacustrine WESGF sequence and are classified as the MFd unit: clay‐streaked siltstone. However, because the system size and variability in hydrodynamic conditions are different between the lacustrine and marine basins, lacustrine WESGFs do appear to have three distinguishable features: 1) the sediment grain size and sand content are slightly higher than those of the marine WESGFs; 2) lacustrine WESGFs may contain prodelta sediments or sedimentary sequences of other types of gravity flows, such as hyperpycnal flows; and 3) the scale of the sedimentary structures for lacustrine WESGFs is smaller. The WESGFs found in the continental lacustrine basin provide a new model for sediment dispersal processes in lake environments and may be helpful to explain and predict the distribution of sandy reservoirs for oil and gas exploration.

Journal

Acta Geologica Sinica (English Edition) – Wiley

Published: Jan 1, 2018

Keywords: ; ; ; ;

There are no references for this article.