干旱区生态环境知识资源中心(Arid): Holocene wet episodes recorded by magnetic minerals in stalagmites from Soreq Cave, Israel

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DOI	10.1130/G49383.1
	Holocene wet episodes recorded by magnetic minerals in stalagmites from Soreq Cave, Israel
	Burstyn, Yuval; Shaar, Ron; Keinan, Jonathan; Ebert, Yael; Ayalon, Avner; Bar-Matthews, Miryam; Feinberg, Joshua M.
通讯作者	Burstyn, Y (corresponding author)，Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel.
来源期刊	GEOLOGY
ISSN	0091-7613
EISSN	1943-2682
出版年	2021-11
英文摘要	This study demonstrates the feasibility of speleothem magnetism as a paleo-hydrology proxy in speleothems growing in semi-arid conditions. Soil-derived magnetic particles in speleothems retain valuable information on the physicochemical conditions of the overlying soil, and changes in bedrock hydrology. Yet, the link between magnetic and isotopic proxies of speleothems has been only partly established. We reveal strong coupling between the inflow of magnetic particles (quantified using the magnetic flux index, IRMflux) and delta C-13 in two Holocene speleothems from Soreq Cave (Israel). The stalagmite record spans from ca. 9.7 to ca. 5.4 ka, capturing the warm-humid conditions associated with the early Holocene and the transition to mid-Holocene wet-dry cycles. Extremely low IRMflux during the early Holocene, indicating minimal contribution from the overlying soil, is accompanied by anomalously high delta C-13 (approaching bedrock values) hypothesized to be caused by high rainfall and soil erosion. By contrast, IRMflux during the mid-Holocene covaries with the saw-tooth cyclicity of delta C-13 and delta O-18, interpreted as rapid fluctuations in rainfall amount. The peaks in IRMflux precede the negative (wet) delta C-13 peaks by similar to 60-120 yr. The apparent lag is explained as a rapid physical translocation of overlying soil particles via groundwater (high IRMflux) as a response to increasing rainfall, compared with slower soil organic matter turnover rates (10-10(2) yr).
类型	Article ; Early Access
语种	英语
开放获取类型	Bronze, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000750879900001
WOS关键词	SPELEOTHEM ; CLIMATE ; REMANENCE ; EVENTS ; REGION
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377031
作者单位	[Burstyn, Yuval; Shaar, Ron; Keinan, Jonathan; Ebert, Yael] Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel; [Ayalon, Avner; Bar-Matthews, Miryam] Geol Survey Israel, 32 Yeshaayahu Leibowitz St, IL-9692100 Jerusalem, Israel; [Feinberg, Joshua M.] Univ Minnesota, Inst Rock Magnetism, Minneapolis, MN 55455 USA
推荐引用方式 GB/T 7714	Burstyn, Yuval,Shaar, Ron,Keinan, Jonathan,et al. Holocene wet episodes recorded by magnetic minerals in stalagmites from Soreq Cave, Israel[J],2021.
APA	Burstyn, Yuval.,Shaar, Ron.,Keinan, Jonathan.,Ebert, Yael.,Ayalon, Avner.,...&Feinberg, Joshua M..(2021).Holocene wet episodes recorded by magnetic minerals in stalagmites from Soreq Cave, Israel.GEOLOGY.
MLA	Burstyn, Yuval,et al."Holocene wet episodes recorded by magnetic minerals in stalagmites from Soreq Cave, Israel".GEOLOGY (2021).