气候变化领域集成服务门户(CCPortal): Enhanced deposition of coal fragments at the Chukchi margin; western Arctic Ocean: Implications for deglacial drainage history from the Laurentide Ice Sheet

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DOI	10.1016/j.quascirev.2019.06.029
	Enhanced deposition of coal fragments at the Chukchi margin; western Arctic Ocean: Implications for deglacial drainage history from the Laurentide Ice Sheet
	Zhang T.; Wang R.; Polyak L.; Xiao W.
发表日期	2019
ISSN	0277-3791
起始页码	281
结束页码	292
卷号	218
英文摘要	Distribution and composition of coarse particles (>250 μm) were investigated in 13 sediment cores from the Chukchi margin, western Arctic Ocean. Petrographic clast identification is supplemented by XRF core scanning, EDS analysis of coal fragments, and AMS 14C dating of planktic foraminifera for age control. Coal debris distribution is also investigated in surface sediments of the study region for provenance interpretation. The sediment-core study focuses on the interval between the Last Glacial Maximum and the Holocene for constraining provenance and timing of the deglacial discharge. We find that this interval is characterized by a distinct enrichment in sedimentary rock fragments, including coal. Comparison with longer stratigraphic records indicates that this composition is unique for the time interval since at least Maine Isotope Stage 5. Based on the timing, interpreted provenance, and geographic distribution of the coal enrichment, we conclude that the most likely primary source was the deglacial discharge from the Mackenzie drainage basin of the Laurentide Ice Sheet (LIS). The identified coal-bearing layer, also expressed in the XRF sulfur record, can be thus used as a stratigraphic marker for the LIS discharge to the Arctic Ocean during the last deglaciation. © 2019 Elsevier Ltd
英文关键词	Arctic ocean; Chukchi margin; Last deglaciation; Laurentide ice sheet; Meltwater discharge; Sedimentary proxies
语种	英语
scopus关键词	Catchments; Coal; Coal deposits; Geographical distribution; Glaciers; Oceanography; Sedimentary rocks; Sedimentology; Sediments; Stratigraphy; Arctic ocean; Chukchi margin; Last deglaciation; Laurentide ice sheets; Melt-water discharges; Sedimentary proxies; Ice; drainage basin; Holocene; ice sheet; last deglaciation; Last Glacial Maximum; Laurentide Ice Sheet; meltwater; planktonic foraminifera; provenance; proxy climate record; sedimentary rock; Arctic Ocean; Chukchi; Russian Federation; Foraminifera
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151845
作者单位	State Key Laboratory of Marine Geology, Tongji University, Shanghai, 200092, China; Byrd Polar and Climate Research Center, The Ohio State University, Columbus, OH 43210, United States
推荐引用方式 GB/T 7714	Zhang T.,Wang R.,Polyak L.,et al. Enhanced deposition of coal fragments at the Chukchi margin; western Arctic Ocean: Implications for deglacial drainage history from the Laurentide Ice Sheet[J],2019,218.
APA	Zhang T.,Wang R.,Polyak L.,&Xiao W..(2019).Enhanced deposition of coal fragments at the Chukchi margin; western Arctic Ocean: Implications for deglacial drainage history from the Laurentide Ice Sheet.Quaternary Science Reviews,218.
MLA	Zhang T.,et al."Enhanced deposition of coal fragments at the Chukchi margin; western Arctic Ocean: Implications for deglacial drainage history from the Laurentide Ice Sheet".Quaternary Science Reviews 218(2019).