Global climate forcing on late Miocene establishment of the Pampean aeolian system in South America

被引：5

作者：

Stubbins, Blake ^{[1
]}

Leier, Andrew L. ^{[1
]}

Barbeau Jr, David L. ^{[1
]}

Pullen, Alex ^{[2
]}

Abell, Jordan T. ^{[3
,4
]}

Nie, Junsheng ^{[5
]}

Zarate, Marcelo A. ^{[6
]}

Fidler, Mary Kate ^{[2
]}

机构：

[1] Univ South Carolina, Sch Earth Ocean & Environm, Columbia, SC 29208 USA

[2] Clemson Univ, Dept Environm Engn & Earth Sci, Clemson, SC 29634 USA

[3] Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA

[4] Lehigh Univ, Dept Earth & Environm Sci, Bethlehem, PA 18015 USA

[5] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China

[6] Univ Nacl La Pampa, Inst Ciencias Tierra & Ambientales La Pampa, CONICET, La Pampa, Argentina

来源：

NATURE COMMUNICATIONS | 2023年 / 14卷 / 01期

基金：

美国国家科学基金会;

关键词：

U-PB AGES; EAST-ASIAN MONSOON; HADLEY CIRCULATION; DETRITAL ZIRCON; BASIN EVOLUTION; ARGENTINA; LOESS; DUST; RECORD; ANDES;

D O I：

10.1038/s41467-023-42537-3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Wind-blown dust from southern South America links the terrestrial, marine, atmospheric, and biological components of Earth's climate system. The Pampas of central Argentina (similar to 33(degrees)-39(degrees)S) contain a Miocene to Holocene aeolian record that spans an important interval of global cooling. Upper Miocene sediment provenance based on n = 3299 detrital-zircon U-Pb ages is consistent with the provenance of Pleistocene-Holocene deposits, indicating the Pampas are the site of a long-lived fluvial-aeolian system that has been operating since the late Miocene. Here, we show the establishment of aeolian sedimentation in the Pampas coincided with late Miocene cooling. These findings, combined with those from the Chinese Loess Plateau (similar to 33(degrees)-39 degrees N) underscore: (1) the role of fluvial transport in the development and maintenance of temporally persistent mid-latitude loess provinces; and (2) a global-climate forcing mechanism behind the establishment of large mid-latitude loess provinces during the late Miocene.

引用

页数：10

共 13 条

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GEOPHYSICAL RESEARCH LETTERS, 2022, 49 (05)
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HISTORICAL BIOLOGY, 2025,
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MARINE GEOLOGY, 2023, 462

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