Deep subduction of H2O and deflection of volcanic chain towards backarc near triple junction due to lower temperature
Deep subduction of H2O and deflection of volcanic chain towards backarc near triple junction due to lower temperature
复制标题
由于温度较低，H2O 深俯冲和火山链向三交点附近的弧后偏转
DOI：
10.1016/s0012-821x(00)00180-1
复制
发表时间：
2000
影响因子：
5.3
通讯作者：
H. Iwamori
中科院分区：
文献类型：
--
作者：
H. Iwamori
在日本中部，靠近太平洋、菲律宾海和北美（或Ohotsuku）板块的三重结合点，火山链与邻近的日本东北部和伊豆-小笠原弧相比，向弧后偏转，位于和田-贝尼奥夫带上方约200-300公里处。数值模拟表明，俯冲太平洋板块的热恢复是缓慢的，由于重叠的菲律宾海板块，使脱水反应转移到更大的深度沿着太平洋板块，并导致岩浆活动以上的深Wadati-Benioff带。沿俯冲太平洋板块的低地热梯度沿着也意味着相当数量的H2O被形成于俯冲板块上方的A相进一步向下携带，而没有被释放用于岩浆活动。日本中部可以被视为H2O进入地幔深处的入口。
In central Japan near the triple junction of the Pacific, Philippine Sea and North American (or Ohotsuku) plates, the volcanic chain deflects towards backarc compared to the adjacent northeast Japan and Izu–Bonin arcs, and lies ∼200–300 km above the Wadati–Benioff zone. Numerical modeling shows that thermal recovery of the subducting Pacific plate is slow, due to the overlapping Philippine sea plate, which shifts the dehydration reactions to greater depths along the Pacific plate and causes the magmatism above the deep Wadati–Benioff zone. The low geothermal gradient along the subducting Pacific plate also implies that a considerable amount of H2O is carried further down by phase A which is formed just above the subducting plate, without being released for magmatism. Central Japan can be regarded as an entrance for H2O into the deep mantle.
影响因子：
5.3
作者：
Schmidt, MW;Poli, S
通讯作者：
Poli, S