APPLICATION OF A REMOTELY OPERATED VEHICLE IN GEOLOGIC MAPPING OF MONTEREY BAY, CALIFORNIA, USA.

Abstract

Monterey Bay Aquarium Research Institute's Remotely Operated Vehicle (ROV) is being used to fill data gaps in the geologic maps of Monterey Bay. With the adaptation of classical field geology methods to ROV technology, preliminary detailed geologic mapping has been successfully undertaken in Monterey Canyon since 1991. The steep relief of this area has been nearly impossible to map using conventional techniques. Our efforts have integrated biological and geological approaches to mapping geology. We delineate faults by the distribution of cold seep communities that are supported by venting sulfide-rich fluids. Conversely, we characterize biological assemblages associated with particular geomorphologies through structural and lithological mapping. Newly discovered rock types have been collected and rock cores have been obtained with the use of an ROV-mounted drill.