Abstract
Thermomagnetic analyses at H=3,000 oe were carried out for 24 submarine rocks dredged from 10 sites mostly from seamounts in the Pacific Ocean. Most of the samples, which are believed to be in situ, show an irreversible increase of both Js and Curie temperature on heating both in air and in vacuum. This increase is explained as unmixing of the original titanomaghemite to magnetite and Ti-rich phases such as hemo-ilmenite and/or pseudo-brookite. The characteristic irreversible change in the thermomagnetic curve is almost sufficient to discriminate uniquely submarine basalts, erupted and preserved in the sea, from those erupted in air.
Sign-in/Register to access full text options 
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.
