TY JOUR TI Geochemical (REE and Trace elements) characteristics and tectonic setting discrimination of Permo-Carboniferous sandstone from Sikkim Lesser Himalaya, NE India KW Geochemistry KW provenance KW tectonic setting KW Sikkim Lesser Himalaya KW India JO Russian Journal of Earth Sciences AU Kumar, R.V. AU Tewari, V.C. PY 2021 IS 21 PB Геофизический центр Российской Академии Наук