English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Downhole magnetometer logs from Sites 865 and 866 in the Cretaceous Mid-Pacific Mountains are used to constrain the nature and origin of the drilled igneous sections. These data provide information concerning the physical nature of basaltic flows that is not otherwise available because of poor core recovery. Magnetic boundaries, apparent inclination, and polarity of magnetization were determined from horizontal and vertical magnetic field variations in the hole. The magnetization of basaltic sills at Allison Guyot (Site 865) was acquired in the Southern Hemisphere during the Cretaceous Normal Superchron. The inclination of primary magnetization is estimated to be between 27° and 33° from magnetometer logs. Magnetic logs from near the top of the igneous section at Resolution Guyot (Site 866) suggest that magnetization was acquired in the Southern Hemisphere during a reversed polarity chron. The logs also suggest that the inclination of the primary magnetization is less than 35°. A significant contribution of induced magnetization to the seamount magnetization is suggested from a comparison of magnetometer data with paleomagnetic results.

proceedings of the ocean drilling program

Inferences about the Nature and Origin of Basalt Sequences from the Cretaceous Mid-Pacific Mountains (Sites 865 and 866), as Deduced from Downhole Magnetometer Logs