Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Dewashish Upadhyay"'
Publikováno v:
Communications Earth & Environment, Vol 3, Iss 1, Pp 1-6 (2022)
A mantle depletion event that occurred around 4.2 billion years ago, and that suggests crust-mantle differentiation in the late Hadean, is recorded in the Singhbhum Craton, India, by means of 146Sm-142Nd whole-rock isotopic analyses.
Externí odkaz:
https://doaj.org/article/9644d5a2c40d44ebb4d297e7419e7cdf
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 11, Pp n/a-n/a (2021)
Abstract The composition of igneous biotite is a potential indicator of the geologic environment of its host rock. Here, we apply two machine learning models−eXtreemly Greedy tree Boosting (XGBoost) and light gradient boosting machine (LightGBM) to
Externí odkaz:
https://doaj.org/article/67bd66a619474e678bc968da7dd48377
Publikováno v:
Minerals, Vol 11, Iss 7, p 756 (2021)
In situ major, trace and rare-earth element composition of Ti-rich garnets from Ambadungar-Saidivasan alkaline carbonatite complex (ASACC) are presented to constrain its likely genesis. The garnets are characterized by high andradite (42.7–57.3), s
Externí odkaz:
https://doaj.org/article/05dcd28f479e4f6bb473705330d1c95f
Autor:
M. Lachhana Dora, Tushar Meshram, Srinivasa Rao Baswani, Vivek P Malviya, Dewashish Upadhyay, Mohd Shareef, Mohd Atif Raza, Sameer Ranjan, Rajkumar Meshram, Monaj Kumar Patnaik, Kirtikumar Randive
Publikováno v:
Gondwana Research. 116:168-197
Publikováno v:
Geological Journal. 58:2002-2027
Publikováno v:
Chemical Geology. 632:121550
Publikováno v:
Geochimica et Cosmochimica Acta. 304:83-100
The source of the mineralizing fluid in Archean greenstone-hosted orogenic gold deposits is widely debated, with the available geochemical and isotope data interpreted as reflecting the involvement of metamorphogenic fluid produced by devolatilizatio
Autor:
D. Srinivasa Sarma, M. L. Renjith, Ranjit Kumar Martha, Rakesh Kumar Patel, S. N. Mahapatro, Dewashish Upadhyay
Publikováno v:
Geological Society, London, Special Publications. 513:351-379
Publikováno v:
Lithos. :107097
Publikováno v:
International Journal of Mass Spectrometry. 485:117010