Pookot is a small freshwater lake situated in the Sahyadri(the Western Ghat)of southern India.We used diffuse reflectance spectroscopy(DRS)and magnetic parameters to characterize the sediment components present in a c...Pookot is a small freshwater lake situated in the Sahyadri(the Western Ghat)of southern India.We used diffuse reflectance spectroscopy(DRS)and magnetic parameters to characterize the sediment components present in a core dating back to~3000 cal.years B.P.DRS data indicate the presence of CaCO_(3),goethite,hematite/goethite,clay minerals and organic carbon in the lake sediments.Based on the down-core variations of the four components,and the values ofχlf(low-field magnetic susceptibility indicative of detrital magnetite)and DRS parameter redness%,we reconstructed the paleoenvironmental history of the region surrounding the lake.展开更多
基金The magnetic instruments used in this study were procured from grants made available by the erstwhile Department of Ocean Development(now Ministry of Earth Sciences),Government of India,through a research project(DOD/11-MRDF/1/48/P/94-ODII/12-10-96)to RS.
文摘Pookot is a small freshwater lake situated in the Sahyadri(the Western Ghat)of southern India.We used diffuse reflectance spectroscopy(DRS)and magnetic parameters to characterize the sediment components present in a core dating back to~3000 cal.years B.P.DRS data indicate the presence of CaCO_(3),goethite,hematite/goethite,clay minerals and organic carbon in the lake sediments.Based on the down-core variations of the four components,and the values ofχlf(low-field magnetic susceptibility indicative of detrital magnetite)and DRS parameter redness%,we reconstructed the paleoenvironmental history of the region surrounding the lake.
