Accession Number : AD0769431

Title :   A Gravimetric Survey of the Santa Cruz-Ano Nuevo Point Continental Shelf and Adjacent Coastline.

Descriptive Note : Master's thesis,


Personal Author(s) : Spikes,Clayton Henry

Report Date : SEP 1973

Pagination or Media Count : 114

Abstract : Gravity data was collected from 82 seafloor and 41 land stations in a 334 sq km area between Santa Cruz and Ano Nuevo Point, California. The methods of data collection and reduction are discussed, with the introduction of a unique sequence pertaining to application of gravity data corrections. A complete Bouguer anomaly map is depicted and subsequently tied in with a previous survey of northern Monterey Bay. Isoline gradient analysis supports the concept that complete Bouguer anomaly profiles can be used to map granitic basement displacements. Complete Bouguer anomaly cross-sections are compared with corresponding profiles of seismic, well core, sea surface gravity, and magnetic data. Excellent correlation is exhibited between these profiles and the Palo Colorado-San Gregorio fault zone. Faulting within the Monterey Bay fault zone can be traced from analysis of related profiles. Supporting evidence of the purported dip-slip and strike-slip motion along the Palo Colorado-San Gregorio fault zone is presented. (Author)

Descriptors :   (*Continental shelves, *Gravimetry), (*Ocean bottom, *Gravity), Surveys, Faults(Geology), Oceanic crust, Ocean bottom topography, Coastal regions, Marine geology, Anomalies, Theses, Geophysics, Pacific Ocean

Subject Categories : Geodesy
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE