The Gold Bar properties lie in the Battle Mountain/Eureka structural mineral trend. They are underlain by a complexly folded and imbricately thrusted sequence of Paleozoic shelf carbonates and deeper water shales and cherts. The Paleozoic rocks are unconformably overlain by a thick sequence of undifferentiated Tertiary volcanics and sediments. Recent pediment gravels fill the valleys.
Primary regional structures are northwest trending strike-slip and dextral wrench faults. These are associated with north-northwest trending dextral synthetic faults, north trending normal faults, northeast trending sinistral antithetic faults and east-west trending compressional faults.
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