干旱区生态环境知识资源中心(Arid): Age and source of coastal loess in Shandong Peninsula, Bohai Sea, China: Implications for dust aggradation in respond to sea-level change

Arid

DOI	10.1016/j.aeolia.2021.100767
	Age and source of coastal loess in Shandong Peninsula, Bohai Sea, China: Implications for dust aggradation in respond to sea-level change
	Miao, Xiaodong; Chongyi, E.; Xu, Shujian; Wang, Qiansuo; Hanson, Paul R.; Chen, Haitao; Shi, Yunkun
通讯作者	Miao, XD (corresponding author), Linyi Univ, Sch Resource & Environm Sci, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276000, Shandong, Peoples R China.
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2022
卷号	54
英文摘要	Coastal loess is a unique and intriguing eolian sediment on Earth, but understanding its formation time, prov-enance, composition and the geomorphic processes that resulted in its accumulation is very limited compared to its inland counterpart. In this paper, we focused on a loess section at Xiazhupan (XZP) Village, Penglai City in Shandong Peninsula, the only known coastal loess bluffs preserved in China. The coastal loess here not only has characteristics that are common to loess terrains such as being composed of predominantly silt-sized particles and the tendency to stand in vertical exposures, but it also reportedly preserves planktonic foraminifera, sizable pebbles and volcanic glass. In addition to its peculiar near-shore locality, these features make it more unusual compared to other loess deposits. Systematic optically stimulated luminescence (OSL), infrared stimulated luminescence (IRSL and pIRIR) and radiocarbon dating reveal it was deposited mostly during 60-20 ka, Marine Isotope Stage (MIS) 4-2, which correlates to the deposition of the Malan loess (L1) in the Chinese Loess Plateau. High-resolution grain size data indicate that the coastal loess is relatively coarse-grained, suggesting a source terrain that is at least partially proximal. Given its proximal source and the geochronological evidence, this coastal loess was sourced from the exposed continental shelf during the sea-level lowstand of the last glacial period, and this hypothesis is further supported by a core collected from the Bohai Sea in which silt was present and would have been subaerially exposed during MIS 4-2. In addition, this source area of exposed continental shelf is comparable to coastal loess in Europe. The coastal loess in Shandong can be regarded as a special type of desert or dryland loess, rather than glacial loess. Finally, future sea level rise will likely increase the erosion potential of these vulnerable coastal loess bluffs, making it urgent to study this special landform.
英文关键词	Coastal loess OSL dating Grain size Shandong Peninsula Sea level
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000724246200001
WOS关键词	LATE QUATERNARY LOESS ; LAST GLACIAL LOESS ; GRAIN-SIZE ; MAGNETIC-SUSCEPTIBILITY ; PALEOSOL SEQUENCES ; MIAODAO ISLANDS ; WEST-COAST ; LUMINESCENCE ; DEPOSITS ; PROVENANCE
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374529
作者单位	[Miao, Xiaodong; Xu, Shujian; Chen, Haitao] Linyi Univ, Sch Resource & Environm Sci, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276000, Shandong, Peoples R China; [Chongyi, E.; Shi, Yunkun] Qinghai Normal Univ, Sch Geog Sci, Qinghai Prov Key Lab Phys Geog & Environm Proc, Xining 810008, Peoples R China; [Wang, Qiansuo] Luoyang Normal Univ, Sch Land & Tourism, Luoyang 471934, Peoples R China; [Hanson, Paul R.] Univ Nebraska, Sch Nat Resources, Conservat & Survey Div, Lincoln, NE 68583 USA; [Chen, Haitao] Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China
推荐引用方式 GB/T 7714	Miao, Xiaodong,Chongyi, E.,Xu, Shujian,et al. Age and source of coastal loess in Shandong Peninsula, Bohai Sea, China: Implications for dust aggradation in respond to sea-level change[J],2022,54.
APA	Miao, Xiaodong.,Chongyi, E..,Xu, Shujian.,Wang, Qiansuo.,Hanson, Paul R..,...&Shi, Yunkun.(2022).Age and source of coastal loess in Shandong Peninsula, Bohai Sea, China: Implications for dust aggradation in respond to sea-level change.AEOLIAN RESEARCH,54.
MLA	Miao, Xiaodong,et al."Age and source of coastal loess in Shandong Peninsula, Bohai Sea, China: Implications for dust aggradation in respond to sea-level change".AEOLIAN RESEARCH 54(2022).