Development of an internally heated gas apparatus useful for crustal geological problems

开发可用于解决地壳地质问题的内热式气体装置

• 批准号: 06504002
• 负责人: TAKAHASHI Eiichi
• 金额: $ 33.79万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06504002/
• 关键词: Earth Science; Crust; rock; mineral; high-pressure experiment; Hot Isostatic Press (HIP); gas medium; 内熱式ガス圧発生装置; アルゴンガス; 相平衡実験; 火山; マグマ; シリケイトメルト; 下部地殻

Various geological phenomena (e.g., volcanic activity, metamorphism, earthquakes, etc) take place under crustal environment beneath Japan (a typical island arc). In order to study these geologic phenomena, we developed an internally heated gass apparatus SMC-5000 which are capable to generate pressure for up to 5000 bars and temperature to 1600 degree centigrade. Due to the very severe control under the High-pressure Gas Regulation Law, we oblighed to lower the maximum pressure from 8000 to 5000 and had to abandone the automatic pressure regulating valve. Otherwise the SMC-5000 was built with excellent pressure regulating system, rapid quenching device, precise temperature controlling capability and long durability for holding very long (up to a week long) high pressure experiments.Using the SMC-5000 apparatus, we conducted melting experiments on some lower crustal amphibolites taken from the Hidaka metamorphic belt in Hokkaido and the Ichiomegata crater in Akita prefecture. The melt frctions as well as the composition of melt and residues were determine with EPMA.The results were then compared with petrologic datra on calc-alkaline volcanic rocks. Based on the comparison, we proposed a model for the deep root zone of Japanese volcanoes.

各种地质现象（如火山活动、变质作用、地震等）发生在日本（典型的岛弧）下方的地壳环境下。为了研究这些地质现象，我们开发了一种内部加热气体装置 SMC-5000，它能够产生高达 5000 巴的压力和高达 1600 摄氏度的温度。由于《高压气体调节法》的管制非常严格，我们不得不将最高压力从8000降到5000，并且不得不放弃自动调压阀。另外，SMC-5000还具有优良的压力调节系统、快速淬火装置、精确的温度控制能力和较长的耐用性，可以进行很长时间（长达一周）的高压实验。使用SMC-5000设备，我们进行了熔化实验对取自北海道日高变质带和秋田县 Ichiomegata 火山口的一些下地壳角闪岩进行了研究。用EPMA测定了熔体分数以及熔体和残渣的成分。然后将结果与钙碱性火山岩的岩石学数据进行比较。基于比较，我们提出了日本火山深根区的模型。

项目成果

W.Wang and E.Takahashi: "Geochemical properties of lithuspheric wantle beneath Sino-Kurea Craton" Phys.Earth Planet.Inter. (印刷中). (1996)

W.Wang 和 E.Takahashi：“中古克拉通岩石圈的地球化学特性”Phys.Earth Planet.Inter（出版中）。

高橋 栄一: "岩波講座 地球惑星科学・第一巻" 岩波書店(松井考典他 編), 325 (1996)

高桥英一：《岩波地球与行星科学讲座》第 1 卷《岩波书店》（松井刚典等编辑），325（1996）

I.Miyagi and H.Yurimoto: "Water content of melt inclusions in phenocryst using Secondary Ion Mass Spectrometer" Bull.Volcanol.Soc.Japan. 40. 3499-355 (1995)

I.Miyagi 和 H.Yurimoto：“使用二次离子质谱仪测定斑晶中熔体包裹体的水含量”Bull.Volcanol.Soc.Japan。

K.Tsuruta and E.Takahashi: "Melting study of an alkali basalt JB-1 up to 10 Gpa" Phys.Earth Planet.Inter.(印刷中). (1996)

K.Tsuruta 和 E.Takahashi：“碱性玄武岩 JB-1 高达 10 Gpa 的熔化研究”Phys.Earth Planet.Inter.（​​出版中）。

高橋栄一,高橋正樹: "なにが島孤火山の深部構造を決めるか" 科学. 65. 638-647 (1995)

Eiichi Takahashi、Masaki Takahashi：“什么决定了岛屿火山的深层结构？” 65. 638-647 (1995)