Strontium isotope data for Recent andesites in Ecuador and North Chile

Details Strontium isotope data for Recent andesites in Ecuador and North Chile Strontium isotope data for Recent andesites in Ecuador and North Chile

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977e%26psl..37..197f&link_type=abstract

Earth and Planetary Science Letters, Volume 37, Issue 2, p. 197-202.

Other

14

Scientific paper

New Sr isotope data are presented for andesite lavas from active volcanoes in Ecuador and North Chile. Twenty-three samples from five Ecuadorian volcanoes have 87Sr/86Sr ratios most of which are essentially within analytical error, and average 0.7044. In contrast, 16 samples from the San Pedro-San Pablo volcano complex in North Chile have 87Sr/86Sr ratios between 0.7058 and 0.7072. These samples show no correlation between 87Sr/86Sr and 87Rb/86Sr, nor between 87Sr/86Sr and other elements or ratios. The major difference in setting between the two volcanic provinces lies in the thickness of the continental crust; 40-50 km beneath Ecuador, 70 km beneath North Chile. Andesites from both areas are derived primarily from the mantle, but those from North Chile show evidence of a significant Sr isotopic contribution from the continental crust.

Affiliated with

Also associated with

No associations

Rating

Strontium isotope data for Recent andesites in Ecuador and North Chile 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 Strontium isotope data for Recent andesites in Ecuador and North Chile, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strontium isotope data for Recent andesites in Ecuador and North Chile will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1418183