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Bullhead City

Looking southwest, across Secret Pass Wash towards the junction of the Secret Pass, Union Pass (west), Mt Nutt (south), and Oatman (southwest) 7.5’ quadrangles. The ridge is composed of 18-19Ma andesitic and dacitic lavas at the base of the Miocene volcanic section.
New digital geologic maps encompass gold/silver mining districts of Mohave County
Map & Geodatabase Services
Minerals & Mining
News
 - 11 April 2020
AZGS releases geologic maps for the Secret Pass 7 ½' Quadrangle and the southern part of the Union Pass 7 ½' Quadrangle, Mohave County, Arizona.
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