Possibility and limitation of high pressure and temperature experiments on flow and fracturing of rocks and recrystallization of minerals

岩石流动、破裂和矿物再结晶高压高温实验的可能性和局限性

• 批准号: 02452066
• 负责人: MASUDA Toshiaki
• 金额: $ 2.56万
• 依托单位: SHIZUOKA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02452066/
• 关键词: Experiment; Recrystallization; Flow of rocks; Grain boundary migration; Grain growth; Folding; Strain; High temperature and pressure; 高温高圧変形実験; 石英; 塑性流動; 粒界移動; 破壊; 流動; 岩石; 再結晶作用; 転位; 高温高圧実験

1.Grain boundary migration of quartz occurred between metachert and chalcedony at the expense of fine-grained quartz grains in chalcedony during annealing experiments. The migration(M)is expressed as M=1.9t^<0.29> where t is the annealing time. The driving force for the migration is the reduction of surface energy. The velocity of grain boundary migration(V)is given by the equation: V-14(P/3g)^<4.4>,where P is the driving force and g is the specific surface energy. Grain size of chalcedony (D) is expressed as D=2.1t^<0.16>.2.Grain boundary migration under the deviatric stress occurred at the boundary between metachert and chalcedony. The migrated boundary is found to be highly serrated.3.Chalcedony can be experimentally compressed up to 60% strain using a thick carbon heater.4.Metachert can be experimentally folded by the compression parallel to the foliation.

1.在退火实验中，变燧石和玉髓之间发生了石英晶界迁移，而玉髓中的细粒石英颗粒则被迁移。迁移（M）表示为M=1.9t^<0.29>，其中t是退火时间。迁移的驱动力是表面能的降低。晶界迁移的速度（V）由以下等式给出：V-14（P/3g）^<4.4>，其中P是驱动力，g是比表面能。玉髓的粒度（D）表示为D= 2.1t^2<0.16>。偏应力作用下的晶界迁移发生在变燧石与玉髓的边界处。3.玉髓可以在实验上被压缩到60%的应变。4.异切岩可以在实验上被平行于叶理的压缩折叠。

项目成果

Masuda,T.: "Discontinuous grain growth of quartz in metacherts:the influence of mica on a microstructural transition" Journal of Metamorphic Gedogy. 9. 389-402 (1991)

Masuda,T.：“metacherts 中石英的不连续晶粒生长：云母对微观结构转变的影响”变质地质学杂志。

T.Masuda(増田 俊明): "Discontinuous grain growth of quartz in metacherts:microstructural tvansition by secondarg recrystallization" Journal of Metamorphic Geology. (1991)

T.Masuda（Toshiaki Masuda）：“变质石英中石英的不连续晶粒生长：二次再结晶的微观结构转变”《变质地质学杂志》（1991）。

K.Michibayashi: "Shearing during progressive retrogression in granitoids: abrupt grain size reduction of quartz at the plastic-brittle transition for feldspar" Journal of Structural Geology. Vol.15. (1993)

K.Michibayashi：“花岗岩渐进回归过程中的剪切：长石塑性-脆性转变过程中石英晶粒尺寸突然减小”《结构地质学杂志》。

T.Masuda: "Discontinuous grain growth of quartz in metacherts: the influence of mica on a microstructural transition" Journal of Metamorphic Geology. Vol.9. 389-402 (1991)

T.Masuda：“变质石英中石英的不连续晶粒生长：云母对微观结构转变的影响”变质地质学杂志。

T.Masuda,T.Koike,T.Yuko & T.Morikawa: "Discontinuous grain growth of guartg in metacherts: the influence of mica on a microstructural transition" Journal of Metamorphic Geology. 9. 389-402 (1991)

T.增田、T.小池、T.佑子