>We are looking for a MORB standard sample which has less contact with
>seawater (This means that the rock has less contamination of a Cl from
>seawater). We expect that the MORB sample should preserve its nature from
>If anybody knows who has such a sample or where we should contact, please
>let us know. We'd appreciate for your information on this matter.
>We have started to measure stable chlorine isotope composition (delta-37-
>Cl vs. standard mean ocean chloride) in rock samples. Our goal is to know
>Cl flux between earth surface and its interior.
>Masaaki Musashi, Dr.
>Department of Geochemistry
>Faculty of Earth Sciences
>University of Utrecht
>P.O.Box 80021, 3508TA Utrecht
>e-mail: [log in to unmask]
Less contact than what? You could try the Nordic Volcanic Institute in
Iceland. They have all kinds of basalts. Ask for Karl Gronvold or