| Title | A 20-ka climate record from central Himalayan loess deposits |
| Author | Basavaiah, N.; Juyal, N.; Saini, N.K.; Yadava, M.G.; Appel, E.; Singhvi, A.K. |
| Author Affil | Basavaiah, N., Wadia Institute of Himalayan Geology, Dehradun, India. Other: University of Wales at Bangor, United Kingdom; Indian Institute of Geomagnetism, India; Physical Research Laboratory, India; Universität Tübingen, Federal Republic of Germany |
| Source | JQS. Journal of Quaternary Science, 20(5), p.485-492, ; Annually-banded records in the Quaternary, Bangor, United Kingdom, Jan. 6-9, 2004, edited by P. Coxon, J. Scourse, L. Clarke and F. Marret. Publisher: John Wiley and Sons for the Quaternary Research Association, Chichester, United Kingdom. ISSN: 0267-8179 |
| Publication Date | July 2005 |
| Notes | In English. 49 refs. GeoRef Acc. No: 296681 |
| Index Terms | radioactive age determination; carbon isotopes; geochemistry; geochronology; grain size; isotopes; loess; luminescence; magnetic properties; paleoclimatology; Pleistocene; Quaternary deposits; radioactive isotopes; remanent magnetism; sediments; India--Dhakuri Dar; Himalayas; India--Uttar Pradesh; absolute age; Asia; C-14; carbon; Cenozoic; central Himalayas; clastic sediments; depositional environment; Dhakuri Dar India; Holocene; India; Indian Peninsula; isothermal remanent magnetization; magnetic susceptibility; magnetization; monsoons; paleomagnetism; paleosols; pedostratigraphy; periglacial environment; Quaternary; remanent magnetization; upper Pleistocene; Uttar Pradesh India |
| Abstract | The southwest monsoon that dominated Central Himalaya has preserved loessic silt deposits preserved in patches that are proximal to periglacial areas. The occurrence of such silts suggests contemporary prevalence of cold and dry northwesterly winds. Field stratigraphy, geochemistry, mineral magnetism, infrared stimulated luminescence (IRSL) and radiocarbon dating has enabled reconstruction of an event chronology during the past 20 ka. Three events of loess accretion could be identified. The first two events of loess deposition occurred betweem 20 and 9 ka and were separated by a phase of moderate weathering. Pedogenesis at the end of this event gave rise to a well-developed soil that was bracketed around 9 to ›4 ka. This was followed by the third phase of loess accretion that occurred around 4 to ›1 ka. Episodes of loess deposition and soil formation are interpreted in terms of changes in the strength of the Indian southwest monsoon. Abstract Copyright (2005), Wiley Periodicals, Inc. |
| URL | http://hdl.handle.net/10.1002/jqs.938 |
| Publication Type | conference paper or compendium article |
| Record ID | 64001749 |