TY - RPRT TI - Age and duration of the Mississippi Valley-type mineralizing fluid flow event in the Viburnum Trend, southeast Missouri, USA, determined from palaeomagnetism AU - David T. A. Symons AU - Michael T. Lewchuk AU - D. L. Leach PY - 1998 DO - 10.1144/gsl.sp.1998.144.01.03 UR - https://pubs.usgs.gov/publication/70020090 ID - 70020090 ER -