The Mudcat Café TM
Thread #110957 Message #2334882
Posted By: Stilly River Sage
07-May-08 - 10:20 AM
Thread Name: BS: Volcano active, slept for ten thousand years
Subject: RE: BS: Volcano active, slept for ten thousand years
I forgot to note above that when the (same) Yellowstone volcano last erupted, about a million years ago, it deposited a great deal of ash over the North Texas (panhandle) area. The gorgeous color of the flint at Alibate's Flint Quarry is the result of the minerals that leeched and redistributed through the microcrystalline quartz in the area.