日本列島及びその周辺部の中生代火成岩類の成因論的考察(討論会-日本列島の中生代変動の性格,<特集>20回記念総会「中生代変動」討論会)

概要

論文の詳細を見る
Mesozonic plutono-volcanic complexes exposed in the eastern margin of the Asiatic continent and in the inner belt of Southwest Japan are characterized enormous amounts of batholithic intrusions of granitic rocks and their effusive equivalents, the time duration of their activities covering 100 m.y.. The area covered by these complexes overcomes 1500×4000 km^2. These characteristics would be explained neither by the remelting of the crust during orogeny nor by the fractionation of primary basalt magma. As an alternative hypothesis, the writer proposes that the primary acidic magma would be generated in the upper mantle on the basis of the phase relations of model mantle system at very high pressures.
地学団体研究会の論文
1966-09-25