TY - JOUR AU - Bustillo, M.A. AU - Bustillo Revuelta, Manuel PY - 2000 DO - 10.1046/J.1365-3091.2000.00337.X SN - 0037-0746 UR - https://hdl.handle.net/20.500.14352/104738 T2 - Sedimentology AB - Four regressive sequences are present in the opaline rocks and related deposits of the Miocene Intermediate Unit of the Madrid Basin. The sequences consist of silty mudstones and argillaceous opals, separated by transitional facies. The silty mudstone... LA - eng M2 - 1023 PB - Wiley KW - Geochemistry KW - Madrid Basin KW - Playa-lake KW - Silcretes KW - Tertiary TI - Miocene silcretes in argillaceous playa deposits, Madrid Basin, Spain: petrological and geochemical features TY - journal article VL - 47 ER -