naa a22 4500 510756921 CHVBK 20180411083125.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s12594-013-0129-0 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0129-0 Integrated mineral magnetic and lithologic studies to delineate dynamic modes of depositional conditions in the Leh valley basin, Ladakh Himalaya, India [Elektronische Daten] [S. Sangode, Suman Rawat, D. Meshram, N. Phadtare, N. Suresh] We present here lithofacies and mineral magnetic results from a ∼50 m thick composite record of fluvial, lacustrine and aeolian facies within the Leh valley basin of Indus River in Ladakh Himalaya. Mineral magnetic studies decipher interplay of two contrasting sediment sources viz., the unimodal ferrimagnetic source derived from Ladakh batholithic glacial domain and mixed ferri-to antiferromagnetic source derived from Indus sedimentary sequence. The lithofacies variability expresses dynamic changes in the depositional regimes controlled by base level fluctuations that are governed by the interaction of basin fill conditions and the response to Late Quaternary climatic perturbations. A three stage evolution of the Leh valley basin is proposed after comparison to other characteristic lithofacies changes within the valley as: (I) the basin under-fill conditions marked by fluvial and fluvio-lacustrine phase till ∼24m (∼64 Ka OSL age) above modern base level followed by (II) predominantly varved, glacio-lacustrine, basin overfill phase till 38m (∼28 Ka) gradually passing into an aeolian phase; and (III) basin incision that began at the earliest Holocene warming. Advancement and retreat of glaciers from the transverse valleys, attributed to climatic oscillations, appears to have greatly controlled the basin-fill conditions in the Leh valley. The present approach demonstrates its larger scope in recording the Late Quaternary response of individual valley basins to delineate local and regional attributes of climate change in the Himalayan and Karakoram region. Geological Society of India, 2013 Lithofacies nationallicence Mineral Magnetism nationallicence Quaternary climate nationallicence Himalaya nationallicence Sangode S. Department of Geology, University of Pune, 411 007, Pune, India aut Rawat Suman Wadia Institute of Himalayan Geology, 248 001, Dehradun, India aut Meshram D. Department of Geology, University of Pune, 411 007, Pune, India aut Phadtare N. Wadia Institute of Himalayan Geology, 248 001, Dehradun, India aut Suresh N. Wadia Institute of Himalayan Geology, 248 001, Dehradun, India aut Journal of the Geological Society of India Springer India 82/2(2013-08-01), 107-120 0016-7622 82:2<107 2013 82 12594 https://doi.org/10.1007/s12594-013-0129-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0129-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sangode S. Department of Geology, University of Pune, 411 007, Pune, India aut NATIONALLICENCE 700 1- Rawat Suman Wadia Institute of Himalayan Geology, 248 001, Dehradun, India aut NATIONALLICENCE 700 1- Meshram D. Department of Geology, University of Pune, 411 007, Pune, India aut NATIONALLICENCE 700 1- Phadtare N. Wadia Institute of Himalayan Geology, 248 001, Dehradun, India aut NATIONALLICENCE 700 1- Suresh N. Wadia Institute of Himalayan Geology, 248 001, Dehradun, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer India 82/2(2013-08-01), 107-120 0016-7622 82:2<107 2013 82 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer