Download or read book Fault Evaluation Study. Marysville Lake Project, Parks Bar Alternate, Yuba River, California: Butte, Yuba, Nevada and Placer Counties, California written by and published by . This book was released on 1977 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the study was threefold: (1) To determine if there had been any surface cracking or faulting within the project area related to the Oroville earthquake sequence; (2) to investigate structures associated with the Swain Ravine and other lineaments and to determine the relationship between them and the 1975 faulting that occurred on the Cleveland Hill fault; and (3) to determine if there has been recent seismic activity within the project area. The study included a comprehensive review of geological reports and maps of the region; the use of data from interpretation of vertical and low-sun-angle aerial photographs; sidelooking airborne radar (SLAR) and Earth Resources Technology Satelite (ERTS) imagery; the compilation of data collected by other agencies investigating the Oroville earthquake and regional tectonics; reconnaissance geological field mapping throughout the regional shear zone; detailed mapping in the project area; and subsurface exploration of the Swain Ravine lineament by trenching.