Upper Pleistocene Sediments from Tale Valley, Lower Subansiri District, Arunachal Pradesh

Tale valley is a NE-SW oriented oval shaped basin situated between altitudes 2278 and 2870m above MSL in Lower Subansiri District of Arunachal Pradesh. Upper Quaternary sediments measuring about 11.85 m unconformably rest over the crystallines in the valley sides of Karing nala, the main tributory in the valley. Radiocarbon dating (¹⁴C) of peaty clay in the lower part of the sequence provides 25400± 750 yrs. B.P. for the sediments, equivalent to Upper Pleistocene age. Lithology suggests glacio-lacustrine and glacio-fluvial environment of deposition.