Table 1.

Lithology and mineral assemblage in the samples studied.

SampleSequenceLithologyMineral assemblage
CL-64El MolinilloRed conglomerateQuartz + dolomite + illite + dickite + sudoite + Fe oxides
CL-26DiezmaRed lutiteQuartz + albite + calcite + dolomite + K-illite + Na-K-illite + sudoite + tri, chlorite +Fe oxides
CL-34DiezmaRed sandstoneQuartz + illite + sudoite + tri, chlorite + pyrophyllite + Fe oxides