Only young magma intrusions contain the amount of heat necessary for the heat supply of an economical geothermal field . 只有年青的巖漿侵入體才能擁有一個(gè)經(jīng)濟(jì)性地?zé)崽餆嵫a(bǔ)給所必需的熱能。
And their development features , textures , structures and the relation with magma intrusion are obviously different from the skarns of contact metasometic origin type 其產(chǎn)出特徵、結(jié)構(gòu)、構(gòu)造及與巖體的關(guān)系等與接觸交代型矽卡巖都有顯著的區(qū)別。
It is believed that the distribution of gold deposits in fujian is controlled by regional deep - seated structure and precambrian volcanic flysch formation containing charcoal is main gold source rock . the accumulation of gold is closely related with yanshan granitic magma intrusion 金礦空間分布受一定的區(qū)域深部構(gòu)造單元所制約,前寒武系富含炭質(zhì)的火山復(fù)理石建造是福建省金礦的主要礦源巖,金的富集成礦與燕山期花崗巖類(lèi)巖漿侵入作用密切相關(guān)。
This thesis studies each structural layer ' s feature : ( 1 ) structural layer of basement : it is a paleozoic folded basement , whose tectonic deformation and magma intrusion is fiercely , and it is affected by the early hercynian tectonic movement and related to the underthrust and closure ( c1 ) of zhungaer ocean basin and the areal pressing of continents ( c2 - 3 ) ; ( 2 ) structural layer of permian : due to the regional extending and fault depression role in mid - hercynian , it occurred to the combinations of structure and magma in santanghu basin and it ' s periphery area , such as a - granite ' s stock , batholiths and diabase ' s dike . there are many fault depressions possible 按照不同構(gòu)造層,研究了各構(gòu)造層的構(gòu)造特征:基底構(gòu)造層:受早海西期構(gòu)造作用的影響,與準(zhǔn)噶爾洋盆俯沖閉合、而后陸-陸碰撞的區(qū)域擠壓構(gòu)造作用有關(guān),為一構(gòu)造變形和巖漿侵入活動(dòng)強(qiáng)烈的古生代褶皺基底。二疊系構(gòu)造層:受中海西區(qū)域性伸展斷陷作用的影響,盆地及其周緣地區(qū)發(fā)育與伸展構(gòu)造有關(guān)的構(gòu)造-巖漿組合,如呈巖株、巖基狀侵位的a型花崗巖以及呈巖墻狀侵位的輝綠巖等。