Zircon SHRIMP U–Pb geochronology, geochemical and Nd isotope systematics of Neoarchean granitoids, Gadag Greenstone Belt, Dharwar Craton, southern India: Petrogenesis and tectonic significance

2021 ◽  
Vol 130 (2) ◽  
Author(s):  
Monika Singh ◽  
S Sarangi ◽  
R Srinivasan ◽  
S Balakrishnan ◽  
V S Hegde
Keyword(s):  
Greenstone Belt ◽  
Dharwar Craton ◽  
Southern India ◽  
Nd Isotope ◽  
Tectonic Significance ◽  
Isotope Systematics

scholarly journals Petrology and Sr-Nd isotope systematics of the Ahobil kimberlite (Pipe-16) from the Wajrakarur field, Eastern Dharwar craton, southern India

2019 ◽  
Vol 10 (3) ◽  
pp. 1167-1186 ◽  
Author(s):  
Abhinay Sharma ◽  
Alok Kumar ◽  
Praveer Pankaj ◽  
Dinesh Pandit ◽  
Ramananda Chakrabarti ◽  
...  
Keyword(s):  
Kimberlite Pipe ◽  
Dharwar Craton ◽  
Southern India ◽  
Eastern Dharwar Craton ◽  
Nd Isotope ◽  
Isotope Systematics

Zircon-monazite geochronology and P-T evolution of the Sargur Greenstone Belt: Implications for the end-Archean tectonics of the Dharwar Craton in southern India

2021 ◽  
Vol 364 ◽  
pp. 106384
Author(s):  
Yan Zhao ◽  
Mingguo Zhai ◽  
Chengli Zhang ◽  
Yong Sun ◽  
Longlong Gou ◽  
...  
Keyword(s):  
Greenstone Belt ◽  
Dharwar Craton ◽  
Southern India

Geochronology and geochemistry of Meso- to Neoarchean magmatic epidote-bearing potassic granites, western Dharwar Craton (Bellur–Nagamangala–Pandavpura corridor), southern India: implications for the successive stages of crustal reworking and cratonization

2019 ◽  
Vol 489 (1) ◽  
pp. 79-114 ◽  
Author(s):  
M. Jayananda ◽  
Martin Guitreau ◽  
T. Tarun Thomas ◽  
Hervé Martin ◽  
K. R. Aadhiseshan ◽  
...  
Keyword(s):  
Greenstone Belt ◽  
Dharwar Craton ◽  
Western Boundary ◽  
Nd Isotope ◽  
Deep Crust ◽  
Elemental Data ◽  
Juvenile Crust ◽  
Three Stages ◽  
Lower Crustal ◽  
Ree Patterns

AbstractWe present field and petrographical characteristics, zircon U–Pb ages, Nd isotopes, and major and trace element data for the magmatic epidote-bearing granitic plutons in the Bellur–Nagamangala–Pandavpura corridor, and address successive reworking and cratonization events in the western Dharwar Craton (WDC). U–Pb zircon ages reveal three stages of plutonism including: (i) sparse 3.2 Ga granodiorite plutons intruding the TTG (tonalite–trondhjemite–granodiorite) basement away from the western boundary of the Nagamangala greenstone belt; (ii) 3.0 Ga monzogranite to quartz monzonite plutons adjoining the Nagamangala greenstone belt; and (iii) 2.6 Ga monzogranite plutons in the Pandavpura region. Elemental data of the 3.2 Ga granodiorite indicate their origin through the melting of mafic protoliths without any significant residual garnet. Moderate to poorly fractionated REE patterns of 3.0 Ga plutons with negative Eu anomalies and Nd isotope data with εNd(T) = 3.0 Ga ranging from −1.7 to +0.5 indicate the involvement of a major crustal source with minor mantle input. Melts derived from those two components interacted through mixing and mingling processes. Poorly fractionated REE patterns with negative Eu anomalies of 2.6 Ga plutons suggest plagioclase in residue. The presence of magmatic epidote in all of the plutons points to their rapid emplacement and crystallization at about 5 kbars. The 3.2 Ga intrusions could correspond to reworking associated with a major juvenile crust-forming episode, whilst 3.0 Ga potassic granites correspond to cratonization linked to melting of the deep crust. The 2.6 Ga Pandavpura granite could represent lower-crustal melting and final cratonization, as 2.5 Ga plutons are absent in the WDC.

Pb- and Nd-isotope systematics of stromatolitic limestones from the 2.7 Ga Ngezi Group of the Belingwe Greenstone Belt: constraints on timing of deposition and provenance

2002 ◽  
Vol 114 (3-4) ◽  
pp. 277-294 ◽  
Author(s):  
Robert Bolhar ◽  
Axel Hofmann ◽  
Jon Woodhead ◽  
Janet Hergt ◽  
P Dirks
Keyword(s):  
Greenstone Belt ◽  
Nd Isotope ◽  
Isotope Systematics

Detrital zircon U–Pb ages and Hf-isotope systematics from the Gadag Greenstone Belt: Archean crustal growth in the western Dharwar Craton, India

2012 ◽  
Vol 22 (3-4) ◽  
pp. 843-854 ◽  
Author(s):  
D. Srinivasa Sarma ◽  
N.J. McNaughton ◽  
Elena Belusova ◽  
M. Ram Mohan ◽  
I.R. Fletcher
Keyword(s):  
Detrital Zircon ◽  
Greenstone Belt ◽  
Dharwar Craton ◽  
Hf Isotope ◽  
Crustal Growth ◽  
Isotope Systematics

U-Pb zircon age, geochemistry and petrogenesis of Mesoarchean anorthositic rocks from the Holenarsipur Greenstone Belt, Western Dharwar Craton: Implications for accretionary tectonics in southern India

Lithos ◽  
2021 ◽  
pp. 106268
Author(s):  
Arathi G. Panicker ◽  
M. Ram Mohan ◽  
Dewashish Upadhyay ◽  
B. Vikram Raju ◽  
Hiredya Chauhan ◽  
...  
Keyword(s):  
Greenstone Belt ◽  
Dharwar Craton ◽  
Southern India ◽  
Zircon Age

Hf and Nd isotope systematics of early Archean komatiites from surface sampling and ICDP drilling in the Barberton Greenstone Belt, South Africa

2015 ◽  
Vol 100 (11-12) ◽  
pp. 2396-2411 ◽  
Author(s):  
Janne Blichert-Toft ◽  
Nicholas T. Arndt ◽  
Allan Wilson ◽  
Grace Coetzee
Keyword(s):  
South Africa ◽  
Greenstone Belt ◽  
Surface Sampling ◽  
Nd Isotope ◽  
Barberton Greenstone Belt ◽  
Isotope Systematics
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