SEISMIC-REFRACTION STUDIES OF THE PACIFIC OCEAN BASIN

Abstract

Research Article| December 01, 1956 SEISMIC-REFRACTION STUDIES OF THE PACIFIC OCEAN BASIN: PART I: CRUSTAL THICKNESS OF THE CENTRAL EQUATORIAL PACIFIC RUSSELL W RAITT RUSSELL W RAITT SCRIPPS INSTITUTION OF OCEANOGRAPHY, UNIVERSITY OF CALIFORNIA, LA JOLLA, CALIFORNIA Search for other works by this author on: GSW Google Scholar Author and Article Information RUSSELL W RAITT SCRIPPS INSTITUTION OF OCEANOGRAPHY, UNIVERSITY OF CALIFORNIA, LA JOLLA, CALIFORNIA Publisher: Geological Society of America Received: 31 Oct 1955 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1956, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1956) 67 (12): 1623–1640. https://doi.org/10.1130/0016-7606(1956)67[1623:SSOTPO]2.0.CO;2 Article history Received: 31 Oct 1955 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation RUSSELL W RAITT; SEISMIC-REFRACTION STUDIES OF THE PACIFIC OCEAN BASIN: PART I: CRUSTAL THICKNESS OF THE CENTRAL EQUATORIAL PACIFIC. GSA Bulletin 1956;; 67 (12): 1623–1640. doi: https://doi.org/10.1130/0016-7606(1956)67[1623:SSOTPO]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 On the Mid-Pacific and Capricorn expeditions seismic-refraction observations were made at 42 stations scattered widely within an area of the Central Equatorial Pacific Ocean extending from latitudes 22° S. to 28° N. and longitudes 162° E. to 112° W. At 29 of these stations velocities of about 8 km/sec, or more were reached at the depth of greatest penetration of the refracted waves. The mean of these velocities was 8.24 km/sec.The crustal thickness, defined as the depth below the sea floor at which the 8 km/sec, velocity is reached, ranges from 4.8 km to 13.0 km. The distribution of thicknesses is bimodal with seven anomalous stations giving values between 10 and 13 km. The group of 22 stations believed to be typical of the deep Pacific Basin has an average thickness of 6.31 km with a standard deviation of 1.01km. 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.