The Indus River flows through Ladakh,one of the driest and coldest places on earth,in a tectonically active domain.Fluvial,glaciofluvial,lacustrine and debris dominated sequences represent the Late Quaternary sediment...The Indus River flows through Ladakh,one of the driest and coldest places on earth,in a tectonically active domain.Fluvial,glaciofluvial,lacustrine and debris dominated sequences represent the Late Quaternary sedimentary record along the river course.Karakoram Fault,a major crustal scaled feature reported to be active during the Quaternary,is associated with the Indus River drainage.Linkages between a major,active fault and deposits formed during the activity period of the fault are explored using heavy mineral deduced provenance and Optically Stimulated Luminescence(OSL)chronology.Five deposits in a~200 km long stretch of the Indus River have been examined for a~80 ka period to decipher the climate linked aggradation history.Damming of the Indus River at~79 ka and existence of the Spituk Lake for>30 ka is demonstrated.Using geology of the provenance in relation to the mineralogical attributes of the Quaternary deposits,the major drainage reorganization when the connection of the Tangtse Valley to the Indus was blocked,is inferred at~73 ka.It is supported by the geologicalgeomorphological evidence.The study demonstrates the application of provenance linked mineralogy in terrestrial aggradation in a tectonically active region.展开更多
Buried course of the desiccated river Saraswati/Ghagghar-Hakara from Himalayan front to Arabian Sea through the plains of NW India has been in discussion and scientific investigations since~140 years due to its import...Buried course of the desiccated river Saraswati/Ghagghar-Hakara from Himalayan front to Arabian Sea through the plains of NW India has been in discussion and scientific investigations since~140 years due to its importance in societal evolution and drainage disorganization.展开更多
Introduction Geology of the Indian subcontinent is not only diverse and interesting but also has been studied for a long period.Reflection of a rich geoscientific heritage may be illustrated by a couple of lesser know...Introduction Geology of the Indian subcontinent is not only diverse and interesting but also has been studied for a long period.Reflection of a rich geoscientific heritage may be illustrated by a couple of lesser known early or first“discoveries/descriptions”from the Indian subcontinent.Heinrich(1966)in his book“The Geology of Carbonatites”mentions that the first description of carbonatite was provided from India by Bose(1884)as quoted below(italics and bold for emphasis).展开更多
基金Council of Scientific&Industrial Research(CSIR)(Sr.No1121020574 and Ref.No:19-12/2010(i)EU-IV)funded a fellowship to RLMinistry of Earth Sciences(MoES)has supported the project(MoES/PAMC/H&C/51/2013-PC-II)
文摘The Indus River flows through Ladakh,one of the driest and coldest places on earth,in a tectonically active domain.Fluvial,glaciofluvial,lacustrine and debris dominated sequences represent the Late Quaternary sedimentary record along the river course.Karakoram Fault,a major crustal scaled feature reported to be active during the Quaternary,is associated with the Indus River drainage.Linkages between a major,active fault and deposits formed during the activity period of the fault are explored using heavy mineral deduced provenance and Optically Stimulated Luminescence(OSL)chronology.Five deposits in a~200 km long stretch of the Indus River have been examined for a~80 ka period to decipher the climate linked aggradation history.Damming of the Indus River at~79 ka and existence of the Spituk Lake for>30 ka is demonstrated.Using geology of the provenance in relation to the mineralogical attributes of the Quaternary deposits,the major drainage reorganization when the connection of the Tangtse Valley to the Indus was blocked,is inferred at~73 ka.It is supported by the geologicalgeomorphological evidence.The study demonstrates the application of provenance linked mineralogy in terrestrial aggradation in a tectonically active region.
基金supported by the Ministry of Earth Sciences grant on“A 100ka glaciations-deglaciation history of Ladakh:its comparison with Sutlej valley”signatures in the alluvial plains of NW India(MoES/PAMC/H&C/51/2013-PC-Ⅱ) to NCP.
文摘Buried course of the desiccated river Saraswati/Ghagghar-Hakara from Himalayan front to Arabian Sea through the plains of NW India has been in discussion and scientific investigations since~140 years due to its importance in societal evolution and drainage disorganization.
文摘Introduction Geology of the Indian subcontinent is not only diverse and interesting but also has been studied for a long period.Reflection of a rich geoscientific heritage may be illustrated by a couple of lesser known early or first“discoveries/descriptions”from the Indian subcontinent.Heinrich(1966)in his book“The Geology of Carbonatites”mentions that the first description of carbonatite was provided from India by Bose(1884)as quoted below(italics and bold for emphasis).
