干旱区生态环境知识资源中心(Arid): Late cenozoic geology and geomorphology of the Laguna de Agnia Area, Argentina

Arid

DOI	10.1016/j.jsames.2021.103257
	Late cenozoic geology and geomorphology of the Laguna de Agnia Area, Argentina
	Reato, Agustina; Martinez, Oscar Alfredo; Beilinson, Elisa; Cottescu, Alexander; Barendregt, Rene W.; Clague, John J.
通讯作者	Reato, A (corresponding author), Univ Nacl Patagonia San Juan Bosco CONICET, Ctr Invest Esquel Montana & Estepa Patagon CIEMEP, Roca 780,U9200, Esquel, Chubut, Argentina.
来源期刊	JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
ISSN	0895-9811
EISSN	1873-0647
出版年	2021
卷号	109
英文摘要	Laguna de Agnia is located within an endorheic basin in arid extra-Andean Patagonia. A variety of erosional and depositional landforms, most of which are relict, are well preserved in the basin. Geological, geomorphological, and sedimentological studies, 14C and 40Ar/39Ar ages, and paleomagnetic data allow us to modify the published interpretation of the late Cenozoic stratigraphy of the area and provide an improved understanding of local landscape evolution, and paleoenvironments and paleoclimates in the region. The basin formed during or before the late Oligocene. Miocene pyroclastic deposits, which are widely distributed in this part of Patagonia, were not found within the basin. However, a bajada sloping down toward the east side of the lake likely dates to the Miocene. Basalt lava flows reached the west margin of the Laguna de Agnia depression 3.39 +/- 0.02 Ma. A lacustrine phase is manifest in numerous shorelines and related features east of and above the modern lake. This shoreline system, one of the most extensive in Patagonia, provides evidence for high paleo-lake levels associated with cooler and wetter conditions during the late Pleistocene and even in some periods during the Holocene, when Southern Hemisphere Westerlies were more intense than today.
英文关键词	Laguna de Agnia Argentina Endoreic basin Lacustrine paleoenvironment Paleoclimate Landscape evolution
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000663010000001
WOS关键词	LAST GLACIAL MAXIMUM ; LAGO-CARDIEL BASIN ; LAKE BONNEVILLE ; CLIMATE-CHANGE ; SEQUENCE STRATIGRAPHY ; ENVIRONMENTAL-CHANGES ; RADIOCARBON CHRONOLOGY ; GASTRE BASIN ; GREAT-BASIN ; PATAGONIA
WOS类目	Geosciences, Multidisciplinary
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/2XILL650/368593
作者单位	[Reato, Agustina; Cottescu, Alexander] Univ Nacl Patagonia San Juan Bosco CONICET, Ctr Invest Esquel Montana & Estepa Patagon CIEMEP, Roca 780,U9200, Esquel, Chubut, Argentina; [Martinez, Oscar Alfredo] Univ Nacl Patagonia San Juan Bosco FCNyCS UNPSJB, Fac Ciencias Nat & Ciencias Salud, Sede Esquel, Campus Univ Ingn Aldo Lopez Guidi, Comodoro Rivadavia, Argentina; [Beilinson, Elisa] Univ Nacl La Plata, Ctr Invest Geol CIG, CONICET, Calle Diagonal 113 N8 275,B1904DPK, La Plata, Argentina; [Barendregt, Rene W.] Univ Lethbridge, Dept Geog & Environm, Alberta Water & Environm Sci Bldg,4401 Univ Dr, Lethbridge, AB T1K 3M4, Canada; [Clague, John J.] Simon Fraser Univ, Dept Earth Sci, 8888 Univ Dr, Burnaby, BC V5A 1S6, Canada
推荐引用方式 GB/T 7714	Reato, Agustina,Martinez, Oscar Alfredo,Beilinson, Elisa,et al. Late cenozoic geology and geomorphology of the Laguna de Agnia Area, Argentina[J],2021,109.
APA	Reato, Agustina,Martinez, Oscar Alfredo,Beilinson, Elisa,Cottescu, Alexander,Barendregt, Rene W.,&Clague, John J..(2021).Late cenozoic geology and geomorphology of the Laguna de Agnia Area, Argentina.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,109.
MLA	Reato, Agustina,et al."Late cenozoic geology and geomorphology of the Laguna de Agnia Area, Argentina".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 109(2021).