Provenance and recycling of detrital zircons from Cenozoic Altiplano strata and the crustal evolution of western South America from combined U-Pb and Lu-Hf isotopic analysis

2019 ◽  
pp. 363-397 ◽  
Author(s):  
Kurt Sundell ◽  
Joel E. Saylor ◽  
Mark Pecha
Keyword(s):  
South America ◽  
Isotopic Analysis ◽  
Detrital Zircons ◽  
Crustal Evolution

How far can we trust provenance and crustal evolution information from detrital zircons? A South African case study

2016 ◽  
Vol 34 ◽  
pp. 129-148 ◽  
Author(s):  
Tom Andersen ◽  
Magnus Kristoffersen ◽  
Marlina A. Elburg
Keyword(s):  
South African ◽  
Detrital Zircons ◽  
Crustal Evolution

An Early Oligocene age for the oldest known monkeys and rodents of South America

2021 ◽  
Vol 118 (37) ◽  
pp. e2105956118
Author(s):  
Kenneth E. Campbell ◽  
Paul B. O’Sullivan ◽  
John G. Fleagle ◽  
Dorien de Vries ◽  
Erik R. Seiffert
Keyword(s):  
South America ◽  
Amazon Basin ◽  
Middle Eocene ◽  
Detrital Zircons ◽  
Age Difference ◽  
Early Oligocene ◽  
Lower Oligocene ◽  
Upper Oligocene ◽  
Caviomorph Rodents ◽  
Age Estimates

The Santa Rosa fossil locality in eastern Perú produced the first Paleogene vertebrate fauna from the Amazon Basin, including the oldest known monkeys from South America. This diverse paleofauna was originally assigned an Eocene age based largely on the stage of evolution of the site’s caviomorph rodents and marsupials. Here, we present detrital zircon dates that indicate that the maximum composite age of Santa Rosa is 29.6 ± 0.08 Ma (Lower Oligocene), although several zircons from Santa Rosa date to the Upper Oligocene. The first appearance datum for Caviomorpha in South America is purported to be the CTA-27 site in the Contamana region of Perú, which is hypothesized to be ∼41 Ma (Middle Eocene) in age. However, the presence of the same caviomorph species and/or genera at both CTA-27 and at Santa Rosa is now difficult to reconcile with a >11-My age difference. To further test the Middle Eocene age estimate for CTA-27, we ran multiple Bayesian tip-dating analyses of Caviomorpha, treating the ages of all Paleogene species from Perú as unknown. These analyses produced mean age estimates for Santa Rosa that closely approximate the maximum 29.6 ± 0.08 Ma composite date provided by detrital zircons, but predict that CTA-27 is much younger than currently thought (∼30 Ma). We conclude that the ∼41 Ma age proposed for CTA-27 is incorrect, and that there are currently no compelling Eocene records of either rodents or primates in the known fossil record of South America.

Coupled U-Pb dating and Hf isotopic analysis of detrital zircons from Bayan Obo Group in Inner Mongolia: Constraints on the evolution of the Bayan Obo rift belt

2017 ◽  
Vol 53 (6) ◽  
pp. 2649-2664 ◽  
Author(s):  
Zhiguang Zhou ◽  
Mengmeng Hu ◽  
Chen Wu ◽  
Guosheng Wang ◽  
Changfeng Liu ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Isotopic Analysis ◽  
Detrital Zircons ◽  
Bayan Obo

scholarly journals Crustal evolution of the Paleoproterozoic Birimian terranes of the Baoulé-Mossi domain, southern West African Craton: U–Pb and Hf-isotope studies of detrital zircons

2016 ◽  
Vol 274 ◽  
pp. 25-60 ◽  
Author(s):  
Luis A. Parra-Avila ◽  
Elena Belousova ◽  
Marco L. Fiorentini ◽  
Lenka Baratoux ◽  
James Davis ◽  
...  
Keyword(s):  
West African ◽  
Detrital Zircons ◽  
Hf Isotope ◽  
Crustal Evolution ◽  
West African Craton ◽  
Isotope Studies

Archean crustal evolution in the northern Yilgarn Craton: U–Pb and Hf-isotope evidence from detrital zircons

2004 ◽  
Vol 131 (3-4) ◽  
pp. 231-282 ◽  
Author(s):  
W.L. Griffin ◽  
E.A. Belousova ◽  
S.R. Shee ◽  
N.J. Pearson ◽  
S.Y. O’Reilly
Keyword(s):  
Detrital Zircons ◽  
Hf Isotope ◽  
Crustal Evolution ◽  
Yilgarn Craton ◽  
Isotope Evidence

Archaean and Proterozoic crustal evolution in the Eastern Succession of the Mt Isa district, Australia: U – Pb and Hf-isotope studies of detrital zircons *

2006 ◽  
Vol 53 (1) ◽  
pp. 125-149 ◽  
Author(s):  
W. L. Griffin ◽  
E. A. Belousova ◽  
S. G. Walters ◽  
S. Y. O'Reilly
Keyword(s):  
Detrital Zircons ◽  
Hf Isotope ◽  
Crustal Evolution ◽  
Isotope Studies ◽  
Mt Isa

Lg Coda Q Variations across South America and their Relation to Crustal Evolution

1998 ◽  
pp. 587-612
Author(s):  
J. L. de Souza ◽  
B. J. Mitchell
Keyword(s):  
South America ◽  
Crustal Evolution ◽  
Coda Q ◽  
Lg Coda
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