The tectonic evolution of the Neoproterozoic Brasília Belt, central Brazil, based on SHRIMP and LA-ICPMS U–Pb sedimentary provenance data: A review

2011 ◽  
Vol 31 (4) ◽  
pp. 345-357 ◽  
Author(s):  
Márcio M. Pimentel ◽  
Joseneusa B. Rodrigues ◽  
Maria Emilia S. DellaGiustina ◽  
Sergio Junges ◽  
Massimo Matteini ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Central Brazil ◽  
Sedimentary Provenance ◽  
Provenance Data

U–Pb SHRIMP zircon ages of Ediacaran-Cambrian granitic bodies in central Brazil: Implications for the tectonic evolution of the Araguaia belt

2020 ◽  
Vol 104 ◽  
pp. 102804
Author(s):  
Paulo Sergio de Sousa Gorayeb ◽  
Umberto Giuseppe Cordani ◽  
Juvenal Juarez Andrade da Silva Neto ◽  
Kei Sato ◽  
Victor Camara Maurer
Keyword(s):  
Tectonic Evolution ◽  
Central Brazil ◽  
Shrimp Zircon

scholarly journals Middle–Late Triassic sedimentary provenance of the southern Junggar Basin and its link with the post-orogenic tectonic evolution of Central Asia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jialin Wang ◽  
Chaodong Wu ◽  
Yue Jiao ◽  
Bo Yuan
Keyword(s):  
Central Asia ◽  
Detrital Zircon ◽  
Tectonic Evolution ◽  
Sedimentary Rocks ◽  
Junggar Basin ◽  
Upper Triassic ◽  
Late Triassic ◽  
The North ◽  
Sedimentary Provenance ◽  
Source To Sink

AbstractDue to the unknown Triassic volcanism in the Junggar Basin, the Middle–Late Triassic sedimentary provenance in the southern Junggar Basin (SJB) has long been controversial. Detrital zircon grains from 13 samples of the Middle–Upper Triassic Xiaoquangou Group in the SJB were analyzed using zircon U–Pb geochronology to constrain the provenance of Triassic sedimentary rocks and to further understand their source-to-sink system. Comparison of detrital zircon U–Pb age distributions for 13 samples reveals that the Triassic age populations predominate in sediments of the northern Bogda Mountains, with subordinate in the southern Bogda Mountains, and no or minimal in the North Tianshan (NTS). Coupled with sandstone petrological, sedimentary geochemical and paleocurrent data, the Triassic detrital zircon grains of the Xiaoquangou Group in the SJB were probably input from the Bogda Mountains. As Pennsylvanian and Mississippian zircon grains are mainly derived from the NTS and Central Tianshan (CTS), the provenance of the Xiaoquangou Group includes the NTS, CTS and Bogda Mountains. But the different samples in different sink areas have different provenances, originating from at least four source-to-sink systems. The supply of sediments from the Bogda Mountains started in the Late Triassic, suggesting initial uplift of the Bogda Mountains.

Sedimentary provenance and age of the Langshan Group in the northeastern Alxa Block: implications for Neoproterozoic tectonic evolution

2019 ◽  
Vol 108 (5) ◽  
pp. 1705-1723 ◽  
Author(s):  
Rongsong Tian ◽  
Guoai Xie ◽  
Jin Zhang ◽  
Wenbin Zhu ◽  
Junfeng Qu ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Sedimentary Provenance

Unraveling the tectonic evolution of a Neoproterozoic–Cambrian active margin in the Ribeira Orogen (Se Brazil): U–Pb and Lu–Hf provenance data

2015 ◽  
Vol 266 ◽  
pp. 337-360 ◽  
Author(s):  
Gabriel Lamounier de F. Fernandes ◽  
Renata da Silva Schmitt ◽  
Everton M. Bongiolo ◽  
Miguel A.S. Basei ◽  
Julio C. Mendes
Keyword(s):  
Tectonic Evolution ◽  
Active Margin ◽  
Provenance Data ◽  
Se Brazil

scholarly journals The tectonic evolution of the Neoproterozoic Brasília Belt, central Brazil: a geochronological and isotopic approach

2016 ◽  
Vol 46 (suppl 1) ◽  
pp. 67-82 ◽  
Author(s):  
Márcio Martins Pimentel
Keyword(s):  
Tectonic Evolution ◽  
Oceanic Lithosphere ◽  
Passive Margin ◽  
Magmatic Arc ◽  
Provenance Studies ◽  
Continental Arcs ◽  
Central Brazil ◽  
Tectonic Settings ◽  
Subduction Magmatism ◽  
Final Closure

ABSTRACT: The Brasília Belt is one of the most complete Neoproterozoic orogens in western Gondwana. Rapid progress on the understanding of the tectonic evolution of the belt was achieved due to new U-Pb data, combined with Sm-Nd and Lu-Hf analyses. The evolution of the Brasília orogen happened over a long period of time (900 - 600 Ma) involving subduction, magmatism and terrain accretion, as a result of the consumption of the Goiás oceanic lithosphere. Provenance studies, based on U-Pb zircon data, indicate that the sedimentary rock units record different tectonic settings and stages of the evolution of the orogen. The Paranoá and Canastra groups represent passive margin sequences derived from the erosion of the São Francisco Craton. The Araxá and Ibiá groups, however, have dominant Neoproterozoic detrital zircon populations, as young as 650 Ma, suggesting derivation from the Goiás Magmatic Arc. The Goiás Magmatic Arc represents a composite arc terrain, formed by the accretion of older (ca. 0.9 - 0.8 Ga) intraoceanic island arc(s), followed by more evolved continental arcs. It extends for several thousand kilometers, from SW Goiás, through NE Brazil and into Africa. Metamorphism took place between 650 - 630 Ma reflecting final closure of the Goiás Ocean and continental collision.

Late Miocene deformation and surface uplift of the North Pamir

2020 ◽  
Author(s):  
Lin Li ◽  
Guillaume Dupont-Nivet ◽  
Pierrick Roperch ◽  
Yani Najman ◽  
Mustafa Kaya ◽  
...  
Keyword(s):  
Central Asia ◽  
Tectonic Evolution ◽  
The Tibetan Plateau ◽  
Stable Oxygen Isotopes ◽  
The North ◽  
Surface Uplift ◽  
Provenance Data ◽  
Stable Oxygen ◽  
Uplift History ◽  
Western Side

<p>The Pamir Plateau, as the west extension of the Tibetan Plateau, forms a prominent salient into central Asia. Previous studies have suggested that the Pamir indented northward, causing retreat of the proto-Paratethys Sea and aridification of Central Asia. However, its indentation and surface uplift history are poorly constrained, with existing studies focusing mainly on the eastern side of the Pamir salient. This study presents new multi-proxy data from the southeast Tajik Basin, located on the western side of the salient, to explore the tectonic evolution of the Pamir Plateau. In the southeast Tajik Basin, our magnetostratigraphic study indicates that the fluvial and alluvial strata were deposited between ~20-8 Ma, with thick conglomerates starting at ~15 Ma. Provenance data from sandstone detrital zircon U-Pb ages and mudstone eNd values indicate a pronounced shift in sediment source from the Central Pamir to the North Pamir around 12 Ma. This provenance change is corroborated by carbonate stable oxygen isotopes showing a gradual decreasing trend between 12-8 Ma, which most likely reflects surface uplift of the North Pamir. Collectively, our results indicate that the North Pamir was originally part of the broad Tarim-Tajik Basin, and has been gradually uplifted since ~12 Ma.</p>

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