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    A geophysical survey within the Mesozoic magnitic anomaly sequence south of Bermuda

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    WHOI 79-104.pdf (8.334Mb)
    Date
    1979-12
    Author
    Purdy, G. Michael  Concept link
    Rohr, Kristin Marie Michener  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/10335
    DOI
    10.1575/1912/10335
    Keyword
     Submarine geology; Seismology 
    Abstract
    This geophysical survey of an approximate 1° square covers Mesozoic magnetic anomalies M0, M2, and M4 south of Bermuda. Bathymetry, magnetics, seismic reflection profiling, and seismic refraction data are presented. The isochron trend within the survey area at magnetic anomaly M4 time is 025°. Two left lateral fracture zones exist: the southern fracture zone has an offset of <10 km at M4 time and 33 km at M0 time. The northern fracture zone has an offset of 37 km at M4 time and 26 km at M0 time. These changes in offset are accounted for by asymmetric spreading, an 11° change in trend of anomaly M0 relative to M4, and by M0 time, growth of a small right lateral fracture zone. Seismic refraction data provide poor control on the shallow crustal structure but suggest the presence of significant lateral inhomogeneities within layer 2.
    Description
    Also published as: Journal of Geophysical Research 84 (1979): 5487-5496
    Collections
    • Geology and Geophysics (G&G)
    • WHOI Technical Reports
    Suggested Citation
    Purdy, G. M., & Rohr, K. M. M. (1979). A geophysical survey within the Mesozoic magnitic anomaly sequence south of Bermuda. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/10335
     
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