Evidence of crustal reworking in the Mesoarchean: Insights from geochemical, U-Pb zircon and Nd isotopic study of a 3.08–3.12 Ga ferro-potassic granite-gneiss from north-eastern margin of Singhbhum Craton, India
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DOI: 10.1016/j.lithos.2019.01.026
Abstract: Abstract Evidences of Mesoarchean crustal reworking are not very common in geological records, being only found from Precambrian terrains like Kaapvaal and Pilbara Cratons where it is preserved as anorogenic/post-collisional granitic activity of 3–3.2 Ga age.… read more here.
Keywords: eastern margin; crustal reworking; granite gneiss; singhbhum craton ... See more keywords
Arc accretion and crustal reworking from late Archean to Neoproterozoic in Northeast Brazil
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DOI: 10.1038/s41598-020-64688-9
Abstract: New systematic Nd isotope and U-Pb geochronology data were applied to Precambrian rocks of northeastern Brazil to produce a crustal-age distribution map for a small basement inlier (1,500 km 2 ). The results support episodic… read more here.
Keywords: accretion crustal; accretion; late archean; crustal reworking ... See more keywords
Petrogenesis of Secondary Diatexites and the Melt Budget for Crustal Reworking
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DOI: 10.1093/petrology/egaa039
Abstract: This study investigates the petrogenesis of diatexite migmatites and leucogranites in a granulite facies terrain and quantifies the melt budget for it. The anatectic rock types in the Ashuanipi Subprovince are: (1) melt-depleted orthopyroxene metatexite… read more here.
Keywords: melt budget; anatectic melt; crustal reworking; melt ... See more keywords