Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Tarun C. Khanna"'
Publikováno v:
Geosciences, Vol 8, Iss 7, p 248 (2018)
In this contribution, we present detailed field, petrography, mineral chemistry, and geochemistry of newly identified high-Si high-Mg metavolcanic rocks from the southern part of the ~3.3 Ga Holenarsipur greenstone belt in the western Dharwar craton,
Externí odkaz:
https://doaj.org/article/0cfb1d38bceb421c93ac2ae59d7a0093
Autor:
A. Keshav Krishna, M. Ram Mohan, Manavalan Satyanarayanan, D. Srinivasa Sarma, Tarun C. Khanna
Publikováno v:
Journal of the Geological Society of India. 97:1240-1250
Publikováno v:
Journal of the Geological Society of India. 96:36-42
Extensive geophysical investigations are ongoing to address the causative mechanisms, which could explain the sustained seismicity in the Koyna-Warna region of the Deccan Volcanic Province (DVP), western India. Towards this effort, several explorator
Autor:
Tarun C Khanna, Kusumita Arora
Publikováno v:
Journal of Earth System Science. 131
Publikováno v:
Earth-Science Reviews. 190:273-309
The amalgamation of five Paleo- to Mesoarchean protocontinent blocks [Singhbhum, Bastar, Dharwar, Aravalli and Bundelkhand] resulted in the present-day tectonic configuration of India. The Dongargarh Supergroup is a major volcano-sedimentary sequence
Autor:
Tarun C. Khanna, S. H. Jaffri
Publikováno v:
Precambrian Research. 358:106184
In an intraplate continental setting, asthenospheric melts emplaced at the surface usually exhibit lithospheric interaction and crustal contamination signatures. In such a scenario, the occurrence of crustally uncontaminated juvenile magmatic rocks i
Autor:
A. Keshav Krishna, V.V. Sesha Sai, D.V. Subba Rao, Michael Bizimis, Tarun C. Khanna, Manavalan Satyanarayanan
Publikováno v:
Precambrian Research. 302:1-17
Picrites with anomalous high-Fe (ferropicrites), have erupted from the Archean to recent, however, their incidences are extremely limited. Particularly, post-Archean occurrences are scarce. Experimental studies indicate that ferropicrites are derived
Publikováno v:
Precambrian Research. 285:186-201
We report on the bulk-rock geochemistry and Lu-Hf isotope systematics, and infer the petrogenesis of the ultramafic rocks in the Neoarchean Veligallu greenstone terrane, eastern Dharwar craton, India. The ultramafics along with the basalts and adakit
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 122:165-171
This paper introduces a calibration procedure and provides the data achieved for accuracy, precision, reproducibility and the detection limits for major (Si, Al, Fe, Mn, Mg, Ca, Na, K, Ti, P) and trace (Ba, Cr, Cu, Hf, La, Nb, Ni, Pb, Rb, Sr, Ta, Th,
Publikováno v:
Lithos. :105705
Back-arc magmatism is perhaps extremely rare in a Paleoproterozoic mobile tectonic regime. The present study provides a detailed account on the petrogenesis of basalts that are interleaved with marine sedimentary rocks in the Agori Formation, which o