Article
Geochemistry & Geophysics
Sheree E. Armistead, Alan S. Collins, Renata S. Schmitt, Raisa L. Costa, Bert De Waele, Theodore Razakamanana, Justin L. Payne, John D. Foden
Summary: The study compared Paleoproterozoic sedimentary sequences in Madagascar, Africa, and India using detrital zircon U-Pb and Hf data, revealing similarities in age and isotopic characteristics. A new concept of the Greater Itremo Basin was proposed to explain the extensive sedimentary coverage in late Paleoproterozoic Madagascar. The research also suggested a new Paleoproterozoic plate tectonic configuration where central Madagascar is connected to the Tanzania Craton and Southern Granulite Terrane.
Article
Geosciences, Multidisciplinary
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
Summary: This study presents the results of geological mapping, petrological, geochemical, and geochronological analyses on rocks from the Betul belt in the Central Indian Tectonic Zone. The findings contribute to a better understanding of the Proterozoic evolution of the area and its connection to past supercontinents.
Article
Geosciences, Multidisciplinary
Arimita Chakrabarty, Subham Mukherjee, Shreya Karmakar, Sanjoy Sanyal, Pulak Sengupta
Summary: The study focuses on the timing and petrogenesis of magmatic rocks in the Central Indian Tectonic zone (CITZ). Petrology, geochemistry and U-Pb in-situ zircon dating of porphyritic granitoids from the Makrohar Granulite Belt (MKGB) reveal that crystal fractionation is the dominant process in the evolution of the arc magma. The in-situ U-Pb zircon age of 1750 Ma suggests a southward progression of the arc front in the Indian shield during the growth of the Columbia supercontinent.
PRECAMBRIAN RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Rohit Kumar Giri, N. V. Chalapathi Rao, Waliur Rahaman, Alok Kumar, M. Satyanarayanan, A. Keshav Krishna
Summary: Calc-alkaline lamprophyres intruding the ca. 2.5 Ga Sidhi Gneissic Complex in the Central Indian Tectonic Zone are classified as minettes based on mineralogy and geochemistry. The negative Ti, Ta, and Nb anomalies in these dykes suggest a subduction-related origin, with isotopic data indicating enrichment from an isotopically enriched mantle source during the Neoarchaean. Modeling suggests low degree partial melting of a sediment-metasomatised mantle source with minimal crustal input. This study supports models proposing northward subduction of the Southern Indian Block beneath the Northern Indian Block along the CITZ.
PRECAMBRIAN RESEARCH
(2021)
Article
Geology
Xiao-Hui Sun, Xiang Li, Ru-Xiong Lei, Xiao-Fei Yang, Jian-Zhong Chen, Chang-Zhi Wu
Summary: This study investigates the Korla Complex in the Tarim Craton and reveals Proterozoic tectono-thermal events. The results show that the assembly of the Tarim Craton to the Columbia supercontinent lasted until ca. 0.81 Ga, indicating its involvement in the global tectonic evolution during the Columbia-Rodinia supercontinent cycle.
ORE GEOLOGY REVIEWS
(2022)
Article
Geochemistry & Geophysics
Kang Xu, Yingde Jiang, Sheng Wang, Tan Shu, Zhi-Yong Li, Stephen Collett, Chao Yuan, Ling-Zhu Kong
Summary: The study in the southeastern Chinese Altai reveals the Paleozoic tectonic evolution with multiple short-lived shortening-extension cycles, serving as a proxy for the Devonian tectonothermal evolution in the region.
Article
Geology
Tanzil Deshmukh, N. Prabhakar, A. Bhattacharya
Summary: By investigating garnet-staurolite schists and associated lithologies from the central Mahakoshal Belt, a clockwise pressure-temperature-time path was reconstructed to understand the protracted accretionary evolution along the Central Indian Tectonic Zone. The study revealed a mosaic of domains in the CITZ that were accreted together in the Neoproterozoic time, showing evidence of different tectonothermal events at 1.80-1.55 and 0.95-0.85 Ga.
JOURNAL OF GEOLOGY
(2021)
Article
Geology
Deepshikha Borah, Hiredya Chauhan, Ashima Saikia, Bibhuti Gogoi
Summary: This study provides comprehensive geochemical and petrological data for high-magnesium andesites (HMAs) from the Shillong Group in the Assam-Meghalaya Gneissic Complex. The HMAs have calc-alkaline traits with high-K contents, significant concentrations of TiO2, and high LILE/HFSE and LREE/HREE ratios. Tectonic discrimination diagrams suggest they were generated in a back-arc basin regime from a depleted lherzolite mantle source within the spinel-garnet transition zone, possibly influenced by subducted sediment-derived melts.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geography, Physical
Pei-yuan Hu, Qing-guo Zhai, Guo-chun Zhao, Jun Wang, Yue Tang, Zhi-cai Zhu, Wei Wang, Hao Wu
Summary: The study focused on gneissic granites in the Amdo microcontinent in central Tibetan Plateau, revealing Cambrian ages of around 500 Ma. Geochemical analysis showed that these granites belong to high-K calc-alkaline I-type granitoids, potentially formed through partial melting of ancient crustal materials influenced by mantle-derived magmas.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Sarada P. Mohanty
Summary: The Satpura Mountain Belt in Central India has undergone two phases of evolution, with evidence of basement-involved fold structures and deformation of the upper and lower crust. A tectonic model is proposed to explain the formation of the mountain belt through subduction-collision events and erosion.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geosciences, Multidisciplinary
Arimita Chakrabarty, Shreya Karmakar, Subham Mukherjee, Sirina Roy Choudhury, Prithwiraj Maiti, Sanjoy Sanyal, Pulak Sengupta
Summary: This study investigates the thermotectonic evolution of rocks in the Central Indian Tectonic Zone (CITZ) and provides insights into their formation and metamorphism. The results suggest that the CITZ was once a continental arc setting, experiencing arc magmatism and subsequent metamorphism. The findings are important for understanding the growth of the Indian shield and the supercontinental cycles of the Earth.
PRECAMBRIAN RESEARCH
(2022)
Article
Geochemistry & Geophysics
Jin Zhang, Yannan Wang, Beihang Zhang, Junfeng Qu, Jinyi Li, Yun Long, Pengfei Niu, Heng Zhao, Jie Hui
Summary: The central North China Craton experienced multiple tectonothermal events during the Mesozoic-Cenozoic period, primarily formed in the Late Jurassic, Late Cretaceous, and early Cenozoic. These events may be regional responses to changes in Pacific Plate movement and led to the formation of rift basins in the eastern North China Craton.
Article
Geochemistry & Geophysics
Meraj Alam, Mukesh-Kumar Mishra, Tatiana-Vladimirovna Kaulina, Talat Ahmad, Ashwini-Kumar Choudhary
Summary: The Central Indian Tectonic Zone (CITZ) is a major suture zone between the Northern and Southern Indian crustal blocks. The southern portion of the CITZ is composed of three litho-tectonic units, and the granite rocks in this region exhibit a wide range of compositions and may have originated from enriched and heterogeneous crustal/lithospheric sources.
GEOCHEMICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Xiaojun Zhou, Wei Liu, Guanghui Wu, R. Damian Nance, Yongquan Chen, Yang Xiao, Wei Yan, Yawen Zhao
Summary: The Tarim Craton experienced prolonged late Neoproterozoic rifting during the breakup of Rodinia and assembly of Gondwana. A study of the Ediacaran mafic rocks suggests that a magmatic event occurred around 620-600 Ma, possibly related to the rifting of an active continental margin.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Johanna Salminen, Sten-Ake Elming, Satu Mertanen, Chong Wang, Bjarne Almqvist, Mohsen Oveisy Moakhar
Summary: Paleomagnetic studies on rapakivi related complexes in Sweden and Finland have shown that Baltica experienced stable low latitude to equatorial positions during 1640-1470 Ma, coinciding with globally pronounced rapakivi-anorthosite magmatism. While there are different interpretations, the model of large-scale superswell phenomenon may play a key role in the origin of rapakivi-anorthosite magmatism.
PRECAMBRIAN RESEARCH
(2021)
Review
Geology
S. K. Bhowmik, A. Ao
JOURNAL OF METAMORPHIC GEOLOGY
(2016)
Article
Geology
G. L. Clarke, S. K. Bhowmik, T. R. Ireland, J. C. Aitchison, S. L. Chapman, L. Kent
JOURNAL OF METAMORPHIC GEOLOGY
(2016)
Article
Geosciences, Multidisciplinary
Santanu Kumar Bhowmik, Somnath Dasgupta, Sudipta Baruah, Deepika Kalita
GEOSCIENCE FRONTIERS
(2018)
Article
Geosciences, Multidisciplinary
Santanu Kumar Bhowmik
GEOLOGICAL JOURNAL
(2019)
Article
Geochemistry & Geophysics
Jonathan C. Aitchison, Aliba Ao, Santanu Bhowmik, Geoffrey L. Clarke, Trevor R. Ireland, Sarah Kachovich, Kapesa Lokho, Denis Stojanovic, Tara Roeder, Naomi Truscott, Yan Zhen, Renjie Zhou
Article
Geochemistry & Geophysics
A. Dasgupta, S. K. Bhowmik, S. Dasgupta, J. Avila, T. R. Ireland
Article
Geochemistry & Geophysics
M. Rajkakati, S. K. Bhowmik, A. Ao, T. R. Ireland, J. Avila, G. L. Clarke, A. Bhandari, J. C. Aitchison
Article
Geochemistry & Geophysics
Aliba Ao, Santanu Kumar Bhowmik, Dewashish Upadhyay
Article
Geosciences, Multidisciplinary
Santanu K. Bhowmik
GEOLOGICAL JOURNAL
(2020)
Review
Geosciences, Multidisciplinary
Santanu Kumar Bhowmik, Aliba Ao, Mayashri Rajkakati
Summary: This study reviewed metamorphic and geochronological data of high-pressure metamorphic rocks from the Nagaland Ophiolite Complex in North-east India and placed them in the tectonic framework of two temporally separate subduction systems. It analyzed metamorphic zonation, facies, and evolutionary paths, linking them to Late Triassic to Middle Jurassic-aged subduction systems. The study also identified two distinct accretionary complexes within the area, likely formed during the Eocene collision of the Indian and Myanmar plates.
GEOLOGICAL JOURNAL
(2022)
Article
Geochemistry & Geophysics
Anamitra Dasgupta, Santanu Kumar Bhowmik, Somnath Dasgupta
Summary: This study investigates the changes in metamorphic style in the Hole Narsipur Greenstone Belt (HGB) in South India and identifies three overlapping metamorphic cycles. These findings are significant for understanding the tectonic evolution and crust formation in the region.
JOURNAL OF PETROLOGY
(2022)
Article
Geochemistry & Geophysics
Sampriti Basak, Eric Hasenstab, Santanu Kumar Bhowmik, Axel Gerdes, Somnath Dasgupta, Carsten Muenker, Gr. Ravindra Kumar, Sumit Chakraborty
Summary: Studying high-grade metamorphic rocks in a crustal-scale shear zone can provide insights into the Archean tectonic processes. Petrological investigations reveal different compositions and reaction histories of these rocks. By using thermobarometry, phase equilibria modeling, and geochronology, a multi-stage P-T-t history was reconstructed, suggesting an early form of peel-back styled orogenesis and intracrustal differentiation.
JOURNAL OF PETROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Libeesh Lukose, Dibyendu Dutta, Mayashri Rajkakati, Arindam Guha, Santanu Kumar Bhowmik
Summary: This study investigates the constituent minerals of different kinds of ultramafic rock samples through petrographic, mineral, and compositional studies. It identifies the dominant absorption features of olivine and different pyroxenes in these rocks. The study also recognizes absorption bands indicative of secondary hydrous minerals associated with alteration. The findings have significance in interpreting remotely sensed data and identifying fossil subduction systems.
JOURNAL OF EARTH SYSTEM SCIENCE
(2023)
Article
Geochemistry & Geophysics
Santanu Kumar Bhowmik, Sumit Chakraborty
EARTH AND PLANETARY SCIENCE LETTERS
(2017)