On Wed, 25 Sep 2002 04:59:54 -0400 EL Jones [EMAIL PROTECTED] wrote:
> Let me try to get this one right the first time. >This doesn't address the Lunar meteorite vs Ejecta >debate but is a discussion on how volcanic glass- >specifically "Apache Tears" forms. See the previous >discussion on tektite and impact glass for comparison. Some web pages that discuss the origin of "Apache Tears" are: 1. THE HISTORY OF SILICIC VOLCANISM IN THE GREATER AMERICAN SOUTHWEST by M. Steven Shackley (Berkeley EDXRF Lab, University of California at Berkeley) http://obsidian.pahma.berkeley.edu/swobhis.htm 2. Petrology of Silicic Glasses in the Southwest by M. Steven Shackley (Berkeley EDXRF Lab, University of California at Berkeley) http://obsidian.pahma.berkeley.edu/obspetrl.htm 3. Close-up of perlitic vitrophyric lava with remnant marekenites http://obsidian.pahma.berkeley.edu/sandtanksloc1.htm http://obsidian.pahma.berkeley.edu/locus1a8.JPG 4. SUPERIOR (PICKETPOST MOUNTAIN)CENTRAL ARIZONA http://obsidian.pahma.berkeley.edu/superior.htm Also, read: Shackley, M. S. (1995) Sources of Archaeological Obsidian in the Greater American Southwest: An Update and Quantitative Analysis. American Antiquity. vol. 60, pp. 531-551. Your, Keith Littleton New Orleans, LA ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
