Materials reviewed and record added under the National Geological and Geophysical Data Preservation Program grant award G11AP20188 August 2011–July 2012. Record modified by Kimberly J. Cook under the NGGDPP grant award G19AP00086 July 2019–June 2020. Record modified by Jennifer Lanman under the NGGDPP grant award G19AP00086 extension June 2020-December 2020.