Magnetostratigraphic and Geochronologic Calibration of Neogene Radiolarian Events, Tropical Pacific,
Abstract
The gross paleomagnetic polarity sequence recorded in deep-sea sediments has been clarified as far back in time as Late Oligocene using chronologically overlapping cores from the tropical Pacific. This research also provided the foundation for various authors to propose a Neogene paleomagnetic time-scale. Although this scale is still evolving, at least in part it corresponds well with similar scales based on marine magnetic anomalies and radiomagnetic dates from continental sections. It is possible to calibrate directly planktonic microfossil datum plates against the magnetic sequence in the sediments, and hence, against the proposed time scale. The authors present a first attempt to compile a comprehensible catalogue of such calibrations for stratigraphically important Neogene radiolarian datum planes. In a few instances, due to inadequate representation of particular species in some cores, either the top or bottom of a range could not be determined.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1976
- Accession Number
- ADA040720
Entities
People
- C. Y. Mato
- F. Theyer
- S. R. Hammond