特集：地球深部の動的物性と物質輸送
マントル遷移層の非平衡鉱物構成
2014 年 24 巻 2 号 p. 136-144
詳細
2014 年 24 巻 2 号 p. 136-144
Untransformed metastable minerals exist under the low-temperature conditions of the subducting plates. Here I report the experimental studies on the transformation kinetics of pyroxene and garnet at high-pressure and high-temperature conditions. Slow kinetics of the pyroxene-garnet transformation due to the low atomic diffusion rate indicates that large low-density metastable regions would exist in the slab, greatly contributing to the slab stagnation around the mantle transition region.
