Extensional tectonics during Late Cretaceous evolution of the Southern Central Andes: Evidence from the Chilean main range at ~35°S

2018 ◽  
Vol 744 ◽  
pp. 93-117 ◽  
Author(s):  
Marcia Muñoz ◽  
Felipe Tapia ◽  
Mario Persico ◽  
Mathieu Benoit ◽  
Reynaldo Charrier ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Central Andes ◽  
Extensional Tectonics ◽  
Southern Central

Geochemical and tectonic evolution of Late Cretaceous to early Paleocene magmatism along the Southern Central Andes (35-36°S)

2018 ◽  
Vol 87 ◽  
pp. 139-156 ◽  
Author(s):  
Sofía B. Iannelli ◽  
Lucas M. Fennell ◽  
Vanesa D. Litvak ◽  
Lucía Fernández Paz ◽  
Alfonso Encinas ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Tectonic Evolution ◽  
Central Andes ◽  
Early Paleocene ◽  
Southern Central

scholarly journals The role of changing geodynamics in the progressive contamination of Late Cretaceous to Late Miocene arc magmas in the southern Central Andes

Lithos ◽  
2016 ◽  
Vol 262 ◽  
pp. 169-191 ◽  
Author(s):  
Rosemary E. Jones ◽  
Linda A. Kirstein ◽  
Simone A. Kasemann ◽  
Vanesa D. Litvak ◽  
Stella Poma ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Late Miocene ◽  
Central Andes ◽  
Arc Magmas ◽  
Southern Central

The Neuquén group: The reconstruction of a Late Cretaceous foreland basin in the southern Central Andes (35–37°S)

2019 ◽  
Vol 767 ◽  
pp. 228177 ◽  
Author(s):  
Pablo Borghi ◽  
Lucas Fennell ◽  
Ricardo Gómez Omil ◽  
Maximiliano Naipauer ◽  
Eliana Acevedo ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Foreland Basin ◽  
Central Andes ◽  
Southern Central

RETROARC BASIN REORGANIZATION AND DIACHRONOUS ARIDIFICATION DURING PALEOGENE UPLIFT OF THE SOUTHERN CENTRAL ANDES

2016 ◽  
Author(s):  
Julie C. Fosdick ◽  
◽  
Barbara Carrapa ◽  
Barbara Carrapa ◽  
Ellen J. Reat ◽  
...  
Keyword(s):  
Central Andes ◽  
Southern Central

A COUPLED LACUSTRINE AND ALLUVIAL FAN RECORD FOR THE HOLOCENE OF THE ARID SOUTHERN CENTRAL ANDES

2017 ◽  
Author(s):  
José Luis Antinao ◽  
◽  
Rachel Tiner ◽  
Rachel Tiner ◽  
Rachel Tiner ◽  
...  
Keyword(s):  
Central Andes ◽  
Alluvial Fan ◽  
The Holocene ◽  
Southern Central

Geochemistry and isotope systematics of small- to medium-volume Neogene–Quaternary ignimbrites in the southern central Andes: evidence for derivation from andesitic magma sources

2001 ◽  
Vol 171 (3-4) ◽  
pp. 213-237 ◽  
Author(s):  
Wolfgang Siebel ◽  
Wolfgang B.W. Schnurr ◽  
Knut Hahne ◽  
Bernhard Kraemer ◽  
Robert B. Trumbull ◽  
...  
Keyword(s):  
Central Andes ◽  
Andesitic Magma ◽  
Magma Sources ◽  
Southern Central ◽  
Isotope Systematics

scholarly journals Early last glacial maximum in the southern Central Andes reveals northward shift of the westerlies at ~39 ka

2011 ◽  
Vol 7 (1) ◽  
pp. 41-46 ◽  
Author(s):  
R. Zech ◽  
J. Zech ◽  
Ch. Kull ◽  
P. W. Kubik ◽  
H. Veit
Keyword(s):  
Last Glacial Maximum ◽  
Central Andes ◽  
Glacial Maximum ◽  
Atmospheric Co2 ◽  
Dissolved Carbon ◽  
Last Glacial ◽  
Exposure Dating ◽  
Latitudinal Position ◽  
Southern Central ◽  
Southern Westerlies

Abstract. The latitudinal position of the southern westerlies has been suggested to be a key parameter for the climate on Earth. According to the general notion, the southern westerlies were shifted equatorward during the global Last Glacial Maximum (LGM: ~24–18 ka), resulting in reduced deep ocean ventilation, accumulation of old dissolved carbon, and low atmospheric CO2 concentrations. In order to test this notion, we applied surface exposure dating on moraines in the southern Central Andes, where glacial mass balances are particularly sensitive to changes in precipitation, i.e. to the latitudinal position of the westerlies. Our results provide robust evidence that the maximum glaciation occurred already at ~39 ka, significantly predating the global LGM. This questions the role of the westerlies for atmospheric CO2, and it highlights our limited understanding of the forcings of atmospheric circulation.

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