i need some information about the twin buttes volcano located in washington... i have to do this project and it has include information about your volcano... can anyone help me?!?!?!?! please answer fast!
2007-02-25 08:32:16 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
my mistake!! it is located in california... sorry!!
2007-02-26 08:06:58 · update #1
Well, there are "Twin Buttes" in Yakima, Columbia, and Skamania counties--but here is a geologic description of some Pleistocene age volcanic Twin Buttes:
Description of rocks from local geologic map published by Washington Geologic Survey:
Basalt of Twin Buttes--Medium- to dark-gray, phyric, olivine
basalt (Hammond,1980).Vesicular to scoriaceous, blocky jointed flows form the summits of East Twin Butte and West Twin Butte.The total cumulative thickness of the flows is 30-120m.The flanks of the buttes are composedof a high percentage of cinders. The unit's stratigraphic position suggests a middle Pleistocene age.
http://www.osti.gov/bridge/servlets/purl/6325892-3pLvlj/6325892.PDF
2007-02-25 11:22:16 · answer #1 · answered by luka d 5 · 0⤊ 0⤋