Petrology of the Volcanic Rocks of the Region Around Boulder Dam
<p>The rocks around Boulder Dam, which range from pre-Cambrian to Recent in age, are dominantly volcanic, but other rock types occur.</p> <p>Pre-Cambrian granitic rocks occur in the Black Mountains, to the east; at Saddle Ridge is a chloritic schist, also pre-Cambrian. No known...
Internet
https://thesis.library.caltech.edu/5722/1/Sklar_m_1938.pdfSklar, Maurice (1938) Petrology of the Volcanic Rocks of the Region Around Boulder Dam. Master's thesis, California Institute of Technology. doi:10.7907/3GPB-8K58. https://resolver.caltech.edu/CaltechTHESIS:04192010-112518708 <https://resolver.caltech.edu/CaltechTHESIS:04192010-112518708>