Article
Geosciences, Multidisciplinary
Seema Singh, A. K. Awasthi, Yuvika Khanna, Anjali Kumari, Bhart Singh, Ajay Kumar, Chaitanya Popli
Summary: The study focused on the relationship between the color of Cenozoic Himalayan foreland basin sediments and tectonics/climate, revealing specific connections between red and grey facies with tectonic pulses and climate cycles. Further investigations at various temporal and spatial scales are needed to utilize sediment color as an indicator of specific climate.
Article
Geosciences, Multidisciplinary
Supriya Ghosh, Prasanta Mandal, Biswajit Bera
Summary: The present study investigates the dynamic changes in channel bar morphology of river Raidak-II in the Himalayan foreland basin. Satellite images and field investigations are used to monitor the morphological changes of different types of channel bars and analyze sediment characteristics. The results show variations in braiding intensity and bar morphology over time and space. Grain size analysis reveals differences in sediment characteristics along the river. The morphological changes of channel bars are influenced by various factors.
JOURNAL OF EARTH SYSTEM SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Sayani Khan, Sarbani Patranabis-Deb, Tarak Nath Khan, Amlan Banerjee
Summary: This study provides a detailed analysis of the depositional processes and stratigraphic evolution of the Chattisgarh basin. The results show a close relationship between sedimentation and tectonic activities, and provide insights into the basin's evolution history.
PRECAMBRIAN RESEARCH
(2023)
Article
Geochemistry & Geophysics
Muhammad Qasim, Javed Iqbal Tanoli, Luqman Ahmad, Lin Ding, Qasim Ur Rehman, Umbreen Umber
Summary: This study conducted a detrital zircon provenance investigation of sandstones from the Kamlial Formation in the Kashmir Basin, revealing a dominant age population around 400-1200 Ma and a minor population around 1600-1900 Ma, with scattered ages between 2000 and 3000 Ma. The presence of younger ages (<150 Ma) in the samples indicates an Asian provenance. The age pattern of detrital zircons strongly resembles Himalayan sources, suggesting a mixed provenance for the Kamlial Formation. The study also proposes a tectonic model involving large-scale exhumation in the Himalaya due to Panjal thrust activation during the deposition of the Kamlial Formation.
Article
Geochemistry & Geophysics
Ahmer Bilal, Muhammad Saleem Mughal, Hammad Tariq Janjuhah, Johar Ali, Abrar Niaz, George Kontakiotis, Assimina Antonarakou, Muhammad Usman, Syed Asim Hussain, Renchao Yang
Summary: This paper provides a detailed discussion on the depositional environment, age, and tectonic context of the Sub-Himalayan Kuldana Formation. Various investigations, including sedimentological, palaeontological, and petrographic analyses, have been conducted to determine the lithology, provenance, and paleo-climate conditions of the formation. The results indicate that the Kuldana Formation consists of siliciclastic and carbonate rocks, with sandstone derived from a recycled orogen provenance field and limestone deposited in an inner-outer ramp setting. The presence of specific bioclasts suggests that the age of the formation is Middle Eocene-early Oligocene, and it was deposited during the initial stages of the Himalayan Orogeny.
Article
Geosciences, Multidisciplinary
Rupa Ghosh, Uma Kant Shukla, Pradeep Srivastava, Anupam Sharma
Summary: The Marginal Ganga Plain (MGP) has a thick fluvial sedimentary record of Late Quaternary forebulge dynamics, with three major depositional sequences and four sequence boundaries. These boundaries, marked by shifts in facies architecture, represent different tectonic and climatic influences. The varying pattern of alluvial architecture in the MGP defines the fluvial landscape shaped by forebulge tectonic signature.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Geography, Physical
Mery Biswas, Ankita Paul
Summary: An analysis of the Main Boundary Thrust (MBT) and Himalayan Frontal Thrust (HFT) in the context of tectonic instability along the Kurti River in North Bengal's Himalayan foreland basin reveals their control on river morphology and valley incision. The study highlights the significance of active faults like Matiali, Chalsa, and Baradighi in shaping the landscape, providing insights into the tectonic evolution and geomorphological processes in the region.
QUATERNARY INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Peter G. DeCelles, Barbara Carrapa
Summary: The Central Andean and Himalayan orogenic belts provide a natural experiment to test the role of climate in controlling orogeny. Despite the Himalaya experiencing more tectonic shortening, the Central Andes have a larger orogenic wedge due to the greater erosion rates in the Himalaya. This is attributed to the greater intensity of the Indian Monsoon compared to the South American Monsoon since the Oligocene.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Michael J. Duvall, John W. F. Waldron, Laurent Godin, Yani Najman, Alex Copley
Summary: The research findings reveal that the foreland basin behind the Himalayas is influenced by various factors in geological processes, including basement structure, flexure, and faulting. The subsidence of the foreland basin is mainly controlled by the Indian Plate, and basement features play a crucial role in the development of the foreland basin.
Article
Geosciences, Multidisciplinary
Sanjay Kumar Mandal, Dirk Scherler, Hella Wittmann
Summary: The study reveals that the erosion rates in the north-western Himalaya region have varied quasi-cyclically over a 6-million-year period, potentially due to tectonic growth affecting landscape equilibrium. The long-term increase in erosion rates is attributed to frequent basal accretion compared to frontal accretion, which confounds climatic interpretations of erosion rate histories.
Article
Geochemistry & Geophysics
Noah F. Hobbs, Jolante W. van Wijk, Ryan Leary, Gary J. Axen
Summary: The interplay between late Paleozoic tectonics at the marginal and intraplate regions of southeastern Laurentia is a subject of debate. This study focuses on the analysis of the Southern Oklahoma Transpressional System (SOTS), a fault zone that extends from the southeastern Laurentian margin into the plate interior. The researchers utilize sedimentary thickness maps and seismic reflection data to reveal the kinematics and driving mechanisms behind the SOTS fault zones.
Article
Geosciences, Multidisciplinary
Ishfaq A. Mir, Aijaz A. Bhat, M. Sreeprabash, V. Sridhar, K. V. Maruthi
Summary: A geochemical study of stream sediment samples from Belgaum, Dharwad, and Uttar Kanada districts reveals the geological characteristics and climatic conditions of the area.
GEOSCIENCES JOURNAL
(2022)
Article
Geography, Physical
Jyoti Tiwari, Pradeep K. Goswami, S. S. Bhakuni
Summary: The study examines the active tectonics of an autochthonous sheet exposed in the KulluLarji-Rampur window of the Lesser Himalaya, revealing active crustal deformation including differential uplift and stream migration. Fast uplift in the northwest of the fold zone leads to an overall southeastward tilting of the terrane.
QUATERNARY INTERNATIONAL
(2021)
Article
Geosciences, Multidisciplinary
A. Peketi, A. Mazumdar, B. Sawant, S. P. K. Pillutla, Subhashree Mishra
Summary: A 39 m long sediment core (MD161-19) from Mahanadi offshore was analyzed for provenance using Sr and Nd isotope systematics. The Sr-Nd isotope ratios of MD161-19 suggest the predominance of Himalayan sediments in the study area. Temporal variations in the Sr-Nd isotope ratios may be due to changing sediment contributions from the Ganga and Brahmaputra river systems. Wet-phases during stadials led to enhanced erosion of the trans Himalayan batholiths (THB) rocks, while warm interstadials with enhanced precipitation resulted in erosion of the Ganga catchment area.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yalong Li, Xun Yu, Huichuan Liu, Xiangtong Huang, Wei Yue, Ergang Lian, Shouye Yang
Summary: This paper presents a comprehensive analysis of petrological, U-Pb geochronological, and geochemical data from river sediments and plutons in Fujian Province. The study reveals the heterogeneity of Mesozoic geochemistry and geochronology in the Northeast Cathaysia Block, which determines the different sediment compositions between western and eastern Fujian rivers. The sediments of eastern rivers are characterized by granitic materials and detrital zircons with two major U-Pb age groups, while the sediments of western rivers primarily consist of heavy minerals from Precambrian rocks and display seven zircon U-Pb age groups.
Article
Geosciences, Multidisciplinary
Subhojit Saha, Kaushik Das, Hiroshi Hidaka, Kosuke Kimura, Partha Pratim Chakraborty, Yasutaka Hayasaka
PRECAMBRIAN RESEARCH
(2016)
Article
Geology
Arpita Samanta, Melinda K. Bera, Anindya Sarkar
Article
Geosciences, Multidisciplinary
Partha Pratim Chakraborty, Subhojit Saha, Kaushik Das
JOURNAL OF ASIAN EARTH SCIENCES
(2017)
Article
Biochemical Research Methods
Arpita Sreemany, Melinda Kumar Bera, Anindya Sarkar
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2017)
Article
Geosciences, Multidisciplinary
Sruthi P. Sreenivasan, Melinda Kumar Bera, Arpita Samanta, Ravikant Vadlamani
JOURNAL OF EARTH SYSTEM SCIENCE
(2018)
Article
Multidisciplinary Sciences
Anindya Sarkar, Arati Deshpande Mukherjee, M. K. Bera, B. Das, Navin Juyal, P. Morthekai, R. D. Deshpande, V. S. Shinde, L. S. Rao
SCIENTIFIC REPORTS
(2016)
Article
Geography, Physical
Torsa Sengupta, Arati Deshpande Mukherjee, Ravi Bhushan, F. Ram, M. K. Bera, Harsh Raj, Ankur J. Dabhi, R. S. Bisht, Y. S. Rawat, S. K. Bhattacharya, Navin Juyal, Anindya Sarkar
JOURNAL OF QUATERNARY SCIENCE
(2020)
Review
Geography, Physical
Arpita Sreemany, Melinda Kumar Bera
QUATERNARY SCIENCE REVIEWS
(2020)
Article
Geosciences, Multidisciplinary
Partha Pratim Chakraborty, Joydip Mukhopadhyay, Pritam P. Paul, Dhiraj Mohan Banerjee, Melinda K. Bera
Article
Geology
Sambit Ghosh, Melinda Kumar Bera, Biswajit Roy, Prasanta Sanyal
Summary: The study reveals that the Siwalick Group in the Kangra sub-basin was deposited by braided rivers, supporting the growth of C-3 plants until around 6 million years ago when C-4 plants began to dominate. Compared to the Pakistan Siwaliks, the Kangra sub-basin exhibits different sedimentary architecture, possibly due to the abundance of floodplain sediments.
Article
Geography, Physical
Arpita Sreemany, Melinda Kumar Bera
Summary: Traditionally, an increase in the stable carbon isotopic ratio (δC-13) of sedimentary organic matter (SOM) has been interpreted as an increase in C4 vegetation abundance, although microbial degradation or changing δC-13 values of C3 plants in response to precipitation change can also have a similar effect. This study used a wet-oxidation method to remove degraded and degradation-prone components of C3 plant-derived organic matter, providing a better understanding of the contribution of C4-derived organic carbon in sediments and identifying disguised C3 plant-derived organic carbon.
JOURNAL OF QUATERNARY SCIENCE
(2022)
Article
Geochemistry & Geophysics
Sruthi P. Sreenivasan, Melinda Kumar Bera, Arpita Samanta
Summary: In this study, a fully automatic-online differential acid extraction method was proposed, using an autosampler-GasBench II-Isotope Ratio Mass Spectrometer (IRMS), to obtain the stable carbon and oxygen isotope ratios (δ13C and δ18O) of primarily precipitated calcite. The results showed that δ13C and δ18O values of calcite can be obtained from the mixture (grain size between 180 and 250 μm) with >50% calcite after a reaction with orthophosphoric acid at 30°C for approximately 15-100 minutes. Furthermore, attaching micro-vibrators to the sample tray improved the precision and accuracy of the measurement using the autosampler-GasBench II-IRMS.
APPLIED GEOCHEMISTRY
(2023)
Article
Chemistry, Physical
Arpita Samanta, M. K. Bera, Sruthi P. P. Sreenivasan, Anindya Sarkar
Summary: The hydrogen isotopic composition of authigenic clay minerals is widely used in paleoclimate studies. This study compared two organic matter-removal methods and found that the samples treated with sodium peroxodisulfate are more suitable for paleoclimate reconstruction.
CLAYS AND CLAY MINERALS
(2023)
Article
Archaeology
Anindya Sarkar, Arati Deshpande Mukherjee, Shubhra Sharma, Torsa Sengupta, F. Ram, M. K. Bera, Subir Bera, Oindrila Biswas, M. G. Thakkar, G. Chauhan, M. G. Yadava, A. D. Shukla, Navin Juyal
ARCHAEOLOGICAL RESEARCH IN ASIA
(2020)
Article
Multidisciplinary Sciences
Arvind K. Singh, Partha Pratim Chakraborty, Subir Sarkar