scholarly journals U–Pb and Hf isotope data of detrital zircons from the Barberton Greenstone Belt: constraints on provenance and Archaean crustal evolution

2013 ◽  
Vol 170 (1) ◽  
pp. 215-223 ◽  
Author(s):  
Armin Zeh ◽  
Axel Gerdes ◽  
Christoph Heubeck
Keyword(s):  
Greenstone Belt ◽  
Detrital Zircons ◽  
Hf Isotope ◽  
Crustal Evolution ◽  
Barberton Greenstone Belt ◽  
Isotope Data

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

scholarly journals U–Pb ages and Hf-isotope data of detrital zircons from the late Neoarchean-Paleoproterozoic Minas Basin, SE Brazil

2017 ◽  
Vol 291 ◽  
pp. 143-161 ◽  
Author(s):  
Carmen I. Martínez Dopico ◽  
Cristiano Lana ◽  
Hugo S. Moreira ◽  
Lucas F. Cassino ◽  
Fernando F. Alkmim
Keyword(s):  
Detrital Zircons ◽  
Hf Isotope ◽  
Isotope Data ◽  
Se Brazil

Nature of magmatism and sedimentation at a Columbia active margin: Insights from combined U–Pb and Lu–Hf isotope data of detrital zircons from NW India

2013 ◽  
Vol 23 (3) ◽  
pp. 1040-1052 ◽  
Author(s):  
Parampreet Kaur ◽  
Armin Zeh ◽  
Naveen Chaudhri ◽  
Axel Gerdes ◽  
Martin Okrusch
Keyword(s):  
Detrital Zircons ◽  
Hf Isotope ◽  
Active Margin ◽  
Isotope Data

Precambrian crustal evolution of the Yangtze Craton: U–Pb and Hf-isotope evidence from detrital zircons

2006 ◽  
Vol 70 (18) ◽  
pp. A366
Author(s):  
Xiaoming Liu ◽  
Shan Gao ◽  
Jin-Hui Yang ◽  
Wenli Ling ◽  
Zhaochu Hu ◽  
...  
Keyword(s):  
Detrital Zircons ◽  
Hf Isotope ◽  
Crustal Evolution ◽  
Yangtze Craton ◽  
Isotope Evidence

scholarly journals The missing link of Rodinia breakup in western South America: A petrographical, geochemical, and zircon Pb-Hf isotope study of the volcanosedimentary Chilla beds (Altiplano, Bolivia)

Geosphere ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 619-645 ◽  
Author(s):  
Heinrich Bahlburg ◽  
Udo Zimmermann ◽  
Ramiro Matos ◽  
Jasper Berndt ◽  
Nestor Jimenez ◽  
...  
Keyword(s):  
South America ◽  
Age Distribution ◽  
Limited Range ◽  
Detrital Zircons ◽  
Hf Isotope ◽  
Geochemical Data ◽  
Isotope Data ◽  
Final Assembly ◽  
Depositional Age ◽  
Southwestern Amazonia

Abstract The assembly of Rodinia involved the collision of eastern Laurentia with southwestern Amazonia at ca. 1 Ga. The tectonostratigraphic record of the central Andes records a gap of ∼300 m.y. between 1000 Ma and 700 Ma, i.e., from the beginning of the Neoproterozoic Era to the youngest part of the Cryogenian Period. This gap encompasses the time of final assembly and breakup of the Rodinia supercontinent in this region. We present new petrographic and whole-rock geochemical data and U-Pb ages combined with Hf isotope data of detrital zircons from the volcanosedimentary Chilla beds exposed on the Altiplano southwest of La Paz, Bolivia. The presence of basalt to andesite lavas and tuffs of continental tholeiitic affinity provides evidence of a rift setting for the volcanics and, by implication, the associated sedimentary rocks. U-Pb ages of detrital zircons (n = 124) from immature, quartz-intermediate sandstones have a limited range between 1737 and 925 Ma. A youngest age cluster (n = 3) defines the maximum depositional age of 925 ± 12 Ma. This is considered to coincide with the age of deposition because Cryogenian and younger ages so typical of Phanerozoic units of this region are absent from the data. The zircon age distribution shows maxima between 1300 and 1200 Ma (37% of all ages), the time of the Rondônia–San Ignacio and early Sunsás (Grenville) orogenies in southwestern Amazonia. A provenance mixing model considering the Chilla beds, Paleozoic Andean units, and data from eastern Laurentia Grenville sources shows that >90% of the clastic input was likely derived from Amazonia. This is also borne out by multidimensional scaling (MDS) analysis of the data. We also applied MDS analysis to combinations of U-Pb age and Hf isotope data, namely εHf(t) and 176Hf/177Hf values, and demonstrate again a very close affinity of the Chilla beds detritus to Amazonian sources. We conclude that the Chilla beds represent the first and hitherto only evidence of Rodinia breakup in Tonian time in Andean South America.

Growth of zircon and titanite during metamorphism in the granitoid-gneiss terrane south of the Barberton greenstone belt, South Africa

2005 ◽  
Vol 69 (6) ◽  
pp. 1019-1036 ◽  
Author(s):  
A. Dziggel ◽  
R. A. Armstrong ◽  
G. Stevens ◽  
L. Nasdala
Keyword(s):  
South Africa ◽  
Greenstone Belt ◽  
Regional Metamorphism ◽  
Detrital Zircons ◽  
Geochronological Data ◽  
Weighted Mean ◽  
Barberton Greenstone Belt ◽  
Minimum Age ◽  
Terrane Accretion ◽  
Lower Crustal

AbstractSHRIMP U-Pb zircon and titanite dating have been used to constrain the timing of mid- to lower- crustal metamorphism (∼650—700°C and 8—11 kbar) and syn-kinematic melting in the granitoid gneiss- dominated terrane south of the Barberton greenstone belt, South Africa. This study is concentrated on a clastic metasedimentary unit exposed in one of several greenstone remnants and a late-kinematic trondhjemite intrusive into spatially associated mixed gneisses. Locally, the clastic metasediments show extensive replacement of garnet and plagioclase by epidote and titanite. The titanites yield an upper intercept date of 3229±9 Ma, and provide a minimum age for the peak of metamorphism. Zircons separated from the same unit record a range of concordant and near-concordant 207Pb/206Pb dates between ∼3560 and 3230 Ma, the youngest group yielding a weighted mean date of 3227±7 Ma. This range of dates is interpreted to be due to a combination of metamorphic recrystallization and high- temperature Pb-loss in originally detrital zircons during regional metamorphism. A minimum age for the timing of deformation is given by the emplacement age of 3229±5 Ma for the late-kinematic trondhjemite. Thus, geochronological data support the notion of a major metamorphic episode that coincided with the proposed short-lived terrane accretion event in the centre of the Barberton greenstone belt.

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