气候变化领域集成服务门户(CCPortal): Late Pleistocene and Holocene paleoenvironmental reconstruction of a drowned karst isolation basin (Lošinj Channel; NE Adriatic Sea)

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DOI	10.1016/j.palaeo.2020.109587
	Late Pleistocene and Holocene paleoenvironmental reconstruction of a drowned karst isolation basin (Lošinj Channel; NE Adriatic Sea)
	Brunović D.; Miko S.; Hasan O.; Papatheodorou G.; Ilijanić N.; Miserocchi S.; Correggiari A.; Geraga M.
发表日期	2020
ISSN	0031-0182
卷号	544
英文摘要	The results of a comprehensive study of submerged paleoenvironments developed along the karstified eastern Adriatic coast during the Late Quaternary are presented in this study. The Lošinj Channel is a drowned karst basin filled with sediments. A multi-proxy analysis of two sediment cores (LK-12 and LK-15) recovered from water depths of 62 and 64 m was conducted. We used magnetic susceptibility, grain size, mineralogy, XRF core scanning, organic and inorganic carbon, total nitrogen, and paleontological data, supplemented with AMS 14C dating results and high-resolution seismic data, to reconstruct the infill history of the Lošinj basin during the Late Pleistocene and Holocene. Our findings include the first detailed description of the presumed Marine Isotope Stage (MIS) 5a marine sediment succession along the eastern Adriatic coast. Deposition in the brackish-to-freshwater lacustrine body (Lošinj paleolake) occurred during MIS 3. Sea level lowstand that followed caused the formation of environmental conditions typical of a karst polje. The post-Last Glacial Maximum (LGM) sea level rise led to the establishment of a brackish marine lake with seawater seepage through the karstified sill at 13.7 cal kyr B.P. The transition to the present-day marine conditions commenced at 10.5 cal kyr B.P. Paleoenvironmental changes in the investigated area can be linked to the presence of a sill at −50 m depth that separates the Lošinj basin from the Kvarnerić Bay. The sill depth determines the isolation or inundation of the investigated basin in response to the changes in sea level. Paleoenvironments reacted sensitively to these changes, and therefore, the study area represents an ideal setting to track regional sea level and climate variabilty. © 2020 Elsevier B.V.
语种	英语
scopus关键词	climate variation; environmental conditions; Holocene; karst; paleoenvironment; Pleistocene-Holocene boundary; Quaternary; reconstruction; sea level change; Adriatic Sea; Bay; Croatia; Losinj; Mediterranean Sea; Somalia
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150578
作者单位	Croatian Geological Survey, Sachsova 2, Zagreb, 10000, Croatia; Laboratory of Marine Geology and Physical Oceanography, Department of Geology, University of Patras, Patras, 26504, Greece; Instituto di Scienze Marine (ISMAR-CNR), Via Gobetti 101, Bologna, 40129, Italy
推荐引用方式 GB/T 7714	Brunović D.,Miko S.,Hasan O.,et al. Late Pleistocene and Holocene paleoenvironmental reconstruction of a drowned karst isolation basin (Lošinj Channel; NE Adriatic Sea)[J],2020,544.
APA	Brunović D..,Miko S..,Hasan O..,Papatheodorou G..,Ilijanić N..,...&Geraga M..(2020).Late Pleistocene and Holocene paleoenvironmental reconstruction of a drowned karst isolation basin (Lošinj Channel; NE Adriatic Sea).Palaeogeography, Palaeoclimatology, Palaeoecology,544.
MLA	Brunović D.,et al."Late Pleistocene and Holocene paleoenvironmental reconstruction of a drowned karst isolation basin (Lošinj Channel; NE Adriatic Sea)".Palaeogeography, Palaeoclimatology, Palaeoecology 544(2020).