Physics
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978e%26psl..40..252y&link_type=abstract
Earth and Planetary Science Letters, Volume 40, Issue 2, p. 252-262.
Physics
3
Scientific paper
Analyses of fifty-one rock samples from three stratovolcanoes in Central Japan revealed that K and Rb contents vary in a saw-toothed fashion with the growth of these volcanoes. Peaks and valleys of the saw-toothed variation pattern of Rb (and also K) increase at first and then gradually converge on constant values. This variation trend is also shown by the Rb/Sr ratio. The convergent Rb/Sr ratio (0.23-0.24) at the peaks coincides with recent estimates of the average value for continental crust. These geochemical features are well explained by the batch fractionation model. In this model, the magma reservoir lying at the top of the mantle is periodically supplied with a batch of parental magma, while the magma in it undergoes continuous crystallization and the cumulate is continuously removed by the divergent movement of the mantle. This model, working under physical conditions in the crust-mantle structure of an island arc, not only accounts for the above geochemical features, but also gives insight into the genesis of the calc-alkaline rock series and of the continental crust.
Ishizaka Kyoichi
Yanagi Takeru
No associations
LandOfFree
Batch fractionation model for the evolution of volcanic rocks in an island arc: an example from Central Japan 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 Batch fractionation model for the evolution of volcanic rocks in an island arc: an example from Central Japan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Batch fractionation model for the evolution of volcanic rocks in an island arc: an example from Central Japan will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1699283