Abstract
The eastern Central Pacific Basin is dominated by the Central Basin Rise, a broad rise that extends northwest from a point southwest of Christmas Island to about 10°N and 170°W. Contoured magnetic values revealed an apparent symmetry over most of the Rise. Offsets in the magnetic contours that correspond to offsets in the bathymetric contours are interpreted to be fracture zones. This pattern of offsets together with the amplitudes of the magnetic anomalies are similar to those associated with typical sea-floor spreading anomalies. With the assumptions that the Central Basin Rise did form by sea-floor spreading and that the rate of spreading was constant, we speculate on its tectonic history. Spreading is inferred from basement age at DSDP Site 66 to have started approximately 100 m.y. ago and ceased just before the beginning of volcanic activity along the Line Islands Ridge, 85 m.y. ago.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
