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Location of the Border Ranges fault southwest of Kodiak Island, Alaska

1981; Geological Society of America; Volume: 92; Issue: 1 Linguagem: Inglês

10.1130/0016-7606(1981)92 2.0.co;2

1943-2674

Michael A. Fisher,

Geochemistry and Geologic Mapping

Research Article| January 01, 1981 Location of the Border Ranges fault southwest of Kodiak Island, Alaska MICHAEL A. FISHER MICHAEL A. FISHER 1U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Author and Article Information MICHAEL A. FISHER 1U.S. Geological Survey, Menlo Park, California 94025 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1981) 92 (1): 19–30. https://doi.org/10.1130/0016-7606(1981)92 2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation MICHAEL A. FISHER; Location of the Border Ranges fault southwest of Kodiak Island, Alaska. GSA Bulletin 1981;; 92 (1): 19–30. doi: https://doi.org/10.1130/0016-7606(1981)92 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract A positive magnetic anomaly extends discontinuously from the south side of the Copper River basin, along the southeast side of Cook Inlet and Shelikof Strait, and southwestward from Kodiak Island to near Sutwik Island. Regionally, this anomaly parallels the Border Ranges fault and is within 10 km of it along the Kodiak Islands. The most probable source for the anomaly near Kodiak Island is mainly Early Jurassic plutonic rocks and locally ultramafic rocks that are associated with a melange. The Border Ranges fault lies between these two rock types, and given the regional parallelism of the fault and the magnetic anomaly, the fault can be traced offshore southwest of Kodiak Island to near Sutwik Island using marine magnetic data. Lithologic evidence suggests that the fault continues southwest of Sutwik Island toward the southwest end of the Alaska Peninsula. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.