干旱区生态环境知识资源中心(Arid): Where did the water come from? Wetlands and shallow lakes in semi-arid dunefields from South America during the Pleistocene-Holocene transition

Arid

DOI	10.1002/jqs.3588
	Where did the water come from? Wetlands and shallow lakes in semi-arid dunefields from South America during the Pleistocene-Holocene transition
	Tripaldi, Alfonsina; Ozan, Ivana L.; Heider, Guillermo; Orgeira, Maria J.; Forman, Steven L.
通讯作者	Tripaldi, A ; Ozán, IL
来源期刊	JOURNAL OF QUATERNARY SCIENCE
ISSN	0267-8179
EISSN	1099-1417
出版年	2024
卷号	39 期号:2 页码:289-308
英文摘要	Stabilized and active dunes and sand sheet deposits abound in a small lake-dotted semi-arid region of the Western Pampean Dunefield, Argentina. Here, a multi-scale and multi-proxy study of three sites, across a hydrologic gradient from lakes to a dryland with groundwater levels at more than 25 m depth, analyzes calcareous and ferruginous rhizoliths, calcareous crusts, hypocoatings, pedogenic carbonate and amorphous Mn-oxide precipitates within blowout dunes. These palustrine-related features indicate significantly wetter conditions that allowed the development of shallow lakes and expanding wetlands during the Pleistocene-Holocene transition, limited by associated optically stimulated luminescence ages between ca. 14.7 and 11.6 ka. These wetter conditions, also identified in other nearby proxy records, may be associated with a strengthened South American Monsoon System, potentially during the Younger Dryas Chronozone, though other geological, ecological and climatic forcings cannot be ruled out with available data. Such a scenario lacks a modern analogue, since current hydrologic excess, evidenced in the formation of lakes and new rivers, is not observed in the localities which record paleolakes. This study underlines the variable conditions for pronounced hydrologic excess in semi-arid eolian environments in western Argentina with complex ecological, anthropogenic and climatic linkages.
英文关键词	calcareous crusts palustrine systems rhizoliths South American Summer Monsoon Younger Dryas
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001142204000001
WOS关键词	WESTERN PAMPAS ; PALUSTRINE CARBONATES ; CLIMATE-CHANGE ; SAN-LUIS ; PRECIPITATION ; VARIABILITY ; RHIZOLITHS ; ARGENTINA ; BASIN ; DESERT
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404677
推荐引用方式 GB/T 7714	Tripaldi, Alfonsina,Ozan, Ivana L.,Heider, Guillermo,et al. Where did the water come from? Wetlands and shallow lakes in semi-arid dunefields from South America during the Pleistocene-Holocene transition[J],2024,39(2):289-308.
APA	Tripaldi, Alfonsina,Ozan, Ivana L.,Heider, Guillermo,Orgeira, Maria J.,&Forman, Steven L..(2024).Where did the water come from? Wetlands and shallow lakes in semi-arid dunefields from South America during the Pleistocene-Holocene transition.JOURNAL OF QUATERNARY SCIENCE,39(2),289-308.
MLA	Tripaldi, Alfonsina,et al."Where did the water come from? Wetlands and shallow lakes in semi-arid dunefields from South America during the Pleistocene-Holocene transition".JOURNAL OF QUATERNARY SCIENCE 39.2(2024):289-308.