Paleomagnetism of basalts from ODP Hole 109-648A

Paleomagnetic parameters of 55 basalt samples from Hole 648B on the Mid-Atlantic Ridge were studied. Negative NRM inclinations were found for 10 samples between 10 and 25 m sub-bottom depth. Several hypotheses related to this phenomenon are discussed. NRM intensities, susceptibilities, median destru...

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Bibliographic Details
Main Authors: Bina, M Mansour, Hamano, Yozo, Krammer, Kristian, Wooldridge, Anita
Format: Dataset
Language:English
Published: PANGAEA 1990
Subjects:
109-648B
DRILL
Drilling/drill rig
Joides Resolution
Leg109
North Atlantic Ocean
Ocean Drilling Program
ODP
Mid-Atlantic Ridge
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.745573
https://doi.org/10.1594/PANGAEA.745573
Description
Summary:Paleomagnetic parameters of 55 basalt samples from Hole 648B on the Mid-Atlantic Ridge were studied. Negative NRM inclinations were found for 10 samples between 10 and 25 m sub-bottom depth. Several hypotheses related to this phenomenon are discussed. NRM intensities, susceptibilities, median destructive fields, and Koenigsberger ratios are slightly different for pillow and massive basalts. One can suggest from measured parameters that magnetic carriers for massive and pillow basalts are PSD titanomagnetite grains more or less close to PSD-MD threshold size with a low degree of alteration.

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