TY - RPRT TI - Ordovician K-bentonites in the Argentine Precordillera: Relations to Gondwana margin evolution AU - W.D. Huff AU - Stig M. Bergstrom AU - Dennis R. Kolata AU - C.A. Cingolani AU - R.A. Astini PY - 1998 DO - 10.1144/gsl.sp.1998.142.01.06 UR - https://pubs.usgs.gov/publication/70020129 ID - 70020129 ER -