igneous activity 中文意思是什麼
igneous activity
解釋
火成活動-
Bimodal igneous activity
雙向火成活動 -
In this time the strike - slipping mylonite, ultramylonite as well as associated igneous and magmatic intrusion and eruptive activity of volcano were formed along the fault
該時期斷裂帶內以走滑糜棱巖、超糜棱巖為主要形式；沿斷裂出現串珠狀巖漿巖體和火山噴發。 -
The results indicate : ( 1 ) the distribution of magmatic rocks shows the feature that in the middle and western part of the study area basic igneous rocks dominate, and in the middle - eastern part intermediate rocks are predominant, while in the southeastern part acid ones are developed. ( 2 ) in the area west to the shiwandashan basin, intermediate magmatites were controlled by deep ne - striking and nw - striking faults, especially at the conjunction site of these two group faults, magmatic activity was strong ; and its tectonic background can be attributed to extensional continental rift
其中，在十萬大山盆地以西地區的偏基性巖漿活動受北東和北西向深斷裂控制明顯，尤其以此兩組斷裂交匯處的巖漿活動強烈，盆地構造背景屬大陸伸展裂谷環境；在十萬大山盆地以東地區為偏酸性巖漿活動，主要受東吳運動形成的欽防造山帶的控制，屬大陸邊緣造山帶或島弧造山帶環境。 -
The first phase involves the formation of thrusting and napping towards nww accompanied by extensive igneous activity and mineralization. the second phase corresponds to the development of asymmetrical small fold downwards north and south. the final phase the cenozoic is marked by strong brittle fractures activity resulting in the sharp heave of the landform of xiaoqinling aera
太華群內的褶皺及南北兩側斷裂分析表明，小秦嶺燕山期至少經歷3期變形，第一期為sse nww向的褶皺變形作用；第2期為南北向正斷下滑剪切作用；第3期為脆性正斷作用。 -
After the volcanic eruption of multi - phrase cycle - deformation, filling of basin, crustal uplifting event being studied, this dissertation tries constructing the different degree rhythm of magma activity corresponding with crust - mantle dynamic system, studying the crust - mantle deep processes. based on the studies on the characteristics of volcanic rhythm, igneous rocks assemblages, temporal and spatial distribution of igneous rocks, tectonic deformation, the author has util ized the methods of petrology, geochemistry, isotopic geology et al. to do research on the above - mentioned geological problems
通過多次幕式火山噴發-構造變形-盆地充填-地殼隆升事件序列的釐定，從火山活動節律特徵、火成巖構造組合類型、時空分佈及其演化和構造變形的歷史記錄，利用巖石學、地球化學、同位素地質學等方法，反演深部過程與淺部響應等來闡明造山過程，建立與不同級別巖漿活動節律對應的殼幔動力學系統，追索殼幔深部過程，已成為當今地球動力學研究的前沿課題之一。
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