naa a22 4500 510756069 CHVBK 20180411083123.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12594-013-0118-3 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0118-3 Petromineralogic and rock magnetic aspects of clastic sedimentation in the Surma basin, Mizoram [Elektronische Daten] [A. Badekar, S. Sangode, Sumit Ghosh, R. Tiwari, D. Meshram, J. Malsawma, P. Lalnuntluanga] We present here comprehensive petromineralogic, mineral magnetic and lithologic observations from five stratigraphic sections representing the Barail Group, Middle and Upper units of Bhuban Formation, Bokabil Formation and Tipam Group in the Mizoram area. These stratigraphic units mainly display interplay of the grey and buff colored sandstones of the clast compositions varying from sub-lithic to lithic arenites (Q79F4L17 to Q55F3L42) including sedimentary, meta-sedimentary and subordinate igneous rock fragments. The buff sandstones with higher lithic fragments [Q69F4L27 (Ls61Lm38Lv1)] are dominated by recycled components with higher clast angularity (VA1A15SA51SR24R8WR0.4) relative to the grey sandstones. Mineral magnetic studies decipher bimodal (ferri- and antiferromagnetic) mineralogy with higher concentration in buff sandstones relative to the unimodal ferrimagnetic nature of the grey sandstones. The study infers that the buff sandstones mark the regressive phases driven by hinterland uplifts; whereas the growth of the grey sandstone facies is marked by transgressive basinal processes. Gradual increase in the frequency and appearance of the buff sandstones in the Surma stratigraphy, therefore, can be related to the evolution of the Indo-Burmese ranges. Geological Society of India, 2013 Bhuban Formation nationallicence Petrography nationallicence Mineral magnetism nationallicence Surma basin nationallicence Mizoram nationallicence Badekar A. Department of Geology, University of Pune, 411 007, Ganeskhind, Pune, India aut Sangode S. Department of Geology, University of Pune, 411 007, Ganeskhind, Pune, India aut Ghosh Sumit Wadia Institute of Himalayan Geology, 33, GMS Road, 248 001, Dehra Dun, India aut Tiwari R. Department of Geology, Mizoram University, 796 004, Aizawl, India aut Meshram D. Department of Geology, University of Pune, 411 007, Ganeskhind, Pune, India aut Malsawma J. Department of Geology, Mizoram University, 796 004, Aizawl, India aut Lalnuntluanga P. Department of Geology, Mizoram University, 796 004, Aizawl, India aut Journal of the Geological Society of India Springer India 82/1(2013-07-01), 23-37 0016-7622 82:1<23 2013 82 12594 https://doi.org/10.1007/s12594-013-0118-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0118-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Badekar A. Department of Geology, University of Pune, 411 007, Ganeskhind, Pune, India aut NATIONALLICENCE 700 1- Sangode S. Department of Geology, University of Pune, 411 007, Ganeskhind, Pune, India aut NATIONALLICENCE 700 1- Ghosh Sumit Wadia Institute of Himalayan Geology, 33, GMS Road, 248 001, Dehra Dun, India aut NATIONALLICENCE 700 1- Tiwari R. Department of Geology, Mizoram University, 796 004, Aizawl, India aut NATIONALLICENCE 700 1- Meshram D. Department of Geology, University of Pune, 411 007, Ganeskhind, Pune, India aut NATIONALLICENCE 700 1- Malsawma J. Department of Geology, Mizoram University, 796 004, Aizawl, India aut NATIONALLICENCE 700 1- Lalnuntluanga P. Department of Geology, Mizoram University, 796 004, Aizawl, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer India 82/1(2013-07-01), 23-37 0016-7622 82:1<23 2013 82 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer