Inert gas abundances in basalts of the Lesser Antilles island arcs: possible implications for their volcanic evolution

Details Inert gas abundances in basalts of the Lesser Antilles island arcs: possible implications for their volcanic evolution Inert gas abundances in basalts of the Lesser Antilles island arcs: possible implications for their volcanic evolution

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pepi...31..161m&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 31, Issue 2, p. 161-170.

Physics

2

Scientific paper

Measurements of noble gas element abundances in igneous rock samples from the Lesser Antilles island arc (LAIA) show an enrichment of Ne, Kr and Xe relative to Ar, when compared to the atmospheric inert gas composition. The element concentrations vary as a function of time and a cyclic variation appears to occur in the pre-Pliocene stage of arc development. The pattern of elemental abundances closely resembles that of ocean floor basalts, suggesting that, (1) the origin of the inert gases in these samples is related to the subduction of oceanic lithosphere responsible for the formation of the LAIA, and (2) the subduction process does not modify the noble gas patterns of the materials being subducted.
There is no evidence of a change in concentration or composition of noble gases occurring at ca. 9 Ma, the time when it has been suggested the LAIA shifted to form the western, younger, volcanic Caribbees. However, a major hiatus in the noble gas evolution is recognised at ca. 16 Ma.
On leave of absence from Instituto de Geofisica, Universidad Nacional Autónoma de Mexico.

Affiliated with

Also associated with

No associations

Rating

Inert gas abundances in basalts of the Lesser Antilles island arcs: possible implications for their volcanic evolution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Inert gas abundances in basalts of the Lesser Antilles island arcs: possible implications for their volcanic evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inert gas abundances in basalts of the Lesser Antilles island arcs: possible implications for their volcanic evolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1307480