SEG_Reprints: Recent submissions

Now showing items 1-20 of 445

Neoarchean (ca. 2746–2501 Ma) magmatism: Evidence from east coast dykes of northeastern Southern Granulite Terrain, India

Pradhan, Sujit K.; Dash, Jitendra K.; Balakrishnan, S.; Bhutani, R. (2024)

We report new Sm–Nd whole rock-mineral isochron ages of 2514 ± 13 Ma (MSWD = 0.79) and 2651 ± 95 Ma (MSWD = 7.4) from two east coast dykes (ECD) of Southern Granulite Terrain (SGT), India. The ages from the representative ...
Geodetic Evidence for Cascading Landslide Motion Triggered by Extreme Rain Events at Joshimath, NW Himalaya

Sreejith, K. M.; Jasir, M. C. M.; Sunil, P. S.; Rose, M. S.; Saji, Ajish P.; Agrawal, R.; Bushair, M. T.; Vijay Kumar, K.; Desai, N. M. (2024)

Slope instability due to tectonic, hydrological and anthropogenic activities cause severe landslides in Himalaya. Joshimath, a densely populated Himalayan town witnessed a catastrophic landslide event during December ...
Magnetotelluric evidence for the thermotectonic architecture of a Paleoproterozoic rift basin in southwestern India

Kumar, Amit; Santosh, M.; Nagarjuna, Danda (2024)

The Kaladgi basin is one of the major Paleoproterozoic rift basins in Peninsular India. Here we attempt to reconstruct the architecture of the basin and evaluate the deep tectonics using magnetotelluric evidence. We ...
Plate Boundary Deformation Following the December 26, 2004 Andaman–Sumatra Earthquake Revealed by GPS Observations and Seismic Moment Tensors

Prajapati, Sanjay K.; Sunil, P.S.; Reddy, C.D. (2014)

To investigate the transient strain rate of postseismic deformation associated with the highly devastating December 26, 2004 Andaman–Sumatra earthquake (Mw 9.3), a combined analysis have been done using GPS data and ...
Magnetovariational study over a seismically active area in the Deccan Trap province of western India

Arora, B.R.; Reddy, C.D. (1991)

This paper presents the results of a magnetovariational study undertaken over a basalt-covered region of western India which has been experiencing a swarm of seismic activity since early 1986. The most striking feature of ...
MAGSAT's contribution to geophysical surveys

Rajaram, Mita (1993)

Magnetic Field Satellite (MAGSAT) data contains contribution from the earth's core, external currents and the crust; the data has been successfully utilised to derive information about each of these sources. Magsat provided ...
Quantitative Interpretation of Geomagnetic Induction Response Across the Thrust Zones of the Himalaya along the Ganga-Yamuna Valley

Reddy, C. D.; Arora, B. R. (1993)

Geomagnetic variations, recorded through a two-phase magnetovariational study carried out along the Ganga-Yamuna valley of the Garhwal Himalaya, northwest India, are reduced to a set of induction arrows spanning a period ...
Proterozoic Mafic Dykes from the Southern Margin of Cuddapah Basin, India: Part 1 – Geochemistry and Petrogenesis

Goutham, M.R.; Subbarao, K.V.; Prasad, C.V.R.K.; Walsh, J.N.; Reddy, V. Damodara (2011)

A palaeomagnetic and 40Ar/39Ar study is reported from a suiteof 41 mafic dykes comprising a dense E-W trending swarm intruding Archaean granitic basement near the southern margin of the Proterozoic Cuddapah basin in southern ...
Geomagnetic phenomena in the South Atlantic anomaly region in Brazil

Trivedi, N.B.; Pathan, B.M.; Schuch, Nelson J.; Barreto, M.; Dutra, L.G. (2005)

The secular variation in the total geomagnetic field F and the westward drift of South Atlantic magnetic anomaly (SAMA) observed in Brazil during the 20th century are presented. According to the International Geomagnetic ...
Electrical Imaging of the Intracratonic Parnaíba Basin, North-Northeast Brazil

Arora, B. R.; Rigoti, A.; Vitorello, I.; Padilha, A. L.; Trivedi, N. B.; Chamalaun, F. H. (1997)

Nighttime transient geomagnetic variations recorded by an array of 29 magnetometers in the equatorial region of north-northeast Brazil have been subjected to robust regression analysis in order to derive transfer functions ...
Evidence of Himalayan erosional event at 0.5Ma from a sediment core from the equatorial Indian Ocean in the vicinityof ODP Leg 116 sites

Nath, B. Nagender; Gupta, S.M.; Mislankar, P.G.; Rao, B.Ramalingeswara; Parthiban, G.; Roelandts, I.; Patil, S.K. (2005)

Asediment core collected from an area 100 miles south of the ODP Leg 116 (distal Bengal Fan) in the equatorial Indian Ocean was investigated for microfossils, mineralogy, mineral chemistry, magnetic susceptibility, grain ...
Impact of Anthropocene Vis-a`-vis Holocene Climatic Changes on Central Indian Himalayan Glaciers

Bali, Rameshwar; Ali, S. Nawaz; Bera, S.K.; Patil, S.K.; Agarwal, K.K.; Nautiyal, C.M. (2015)

Systematic palaeoclimatic study of the glacio-lacustrine sediments using multiproxy data in Pindari glacier area, Central Himalaya has helped in better understanding of the climatic fluctuations since the last 7 Ka. The ...
Assessment of IGRF Candidate Models over the Indian Region

Singh, B. P.; Rajaram, Mita; Basavaiah, N.; Nagar, V. K.; Rajal, B. S. (1992)

The five candidate models for DGRF 1985 and IGRF 1990 developed by IZMIRAN, US/UK, USGS and two models of GSFC, are assessed over the Indian region, using observatory and repeat survey stations data for period 1985-1990. ...
Glacier Melting Triggers Massive Gravel Deposition in Central Italy's River Basins, Unveiling Deglacial Events From 1250 to 780 ka

Florindo, F.; Marra, F.; Jicha, B. R.; Bulian, F.; Di Chiara, A.; Srivastava, P. (2024-02)

The purpose of this study was to prove the direct correlation of a successions of gravel‐clay beds recovered in borehole with the melt‐water pulses associated with the sea‐level oscillations indicated in the δ18O record ...
Upper mantle deformation beneath the northeastern part of Indian plate from shear-wave splitting analysis

Kanaujia, Jyotima; Surve, G. (2024-02)

This study investigates seismic anisotropy in the northeastern region of the Indian plate, including the Eastern Himalayan front, Eastern Himalaya Syntaxis (EHS), Indo-Burmese subduction zone, Shillong Plateau, Assam ...
On the role of volcanic plume heights in excitation of free oscillations of the solid Earth and atmosphere: Case study

Tiwari, Satyamesh H.; Bagiya, Mala S.; Maurya, Satish; Heki, K.; Dimri, A.P. (2024-03)

Volcanic eruptions are potential sources for generating the Earth’s free oscillations at spheroidal modes of 0S29 and 0S37 through acoustic resonant coupling between the Earth and its atmosphere. Then, does every volcano ...
Lithotectonic architecture of the Paleoproterozoic intracratonic Kaladgi rift basin, southwestern India: Inference from a magnetotelluric study

Kumar, Amit; Nagarjuna, Danda (2024-02)

Peninsular India is traversed by several major Paleoproterozoic rift basins, among which the Kaladgi rift basin is a prominent one. Here, we present results from Magnetotelluric (MT) studies in the eastern section of this ...
Paleomagnetism and geochronology of the Gwalior Sills, Bundelkhand craton, Northern India Block: New constraints on Greater India assembly

Meert, Joseph G.; Miller, Scott.R.; Pivarunas, Anthony; Pandit, Manoj K.; Mueller, Paul; Sinha, Anup K.; Kamenov, George; Kwafo, Samuel; Singha, Ananya (2024-01)

Wepresent an updated paleomagnetic pole from the Gwalior Sills in the Bundelkhand craton within the Northern India Block (NIB). Geochronological results from baddeleyite grains from one of the sills yielded an age of 1719 ...
Red clays indicate sub‑aerial exposure of the Rio Grande Rise during the Eocene volcanic episode

Srivastava, Priyeshu; Murton, Bramley J.; Sant’Anna, Lucy Gomes; Florindo, Fabio; Hassan, Muhammad Bin; Guerra, Julia Taciro Mandacaru; Janasi, Valdecir de Assis; Jovane, Luigi (2023-11)

Autonomous underwater vehicle (AUV) mapping of the western Rio Grande Rise (RGR), South Atlantic, and subsequent exploration and photography of horizontal lava flows exposed in near vertical, faulted escarpments, showed ...
Deep electrical structure over the Paleoproterozoic intracratonic Kaladgi rift basin in southwestern India imaged from magnetotelluric studies

Kumar, Amit; Nagarjuna, Danda; Santosh, M.; Begum, S.K.; Rao, C. K. (2024-02)

The disintegration of the Columbia supercontinent during the late Paleoproterozoic generated major rift basins in the constituent continental fragments. The Kaladgi basin, located between the southern part of the Deccan ...

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