新疆地质
新疆地質
신강지질
XINJIANG GEOLOGY
2013年
2期
147-151
,共5页
张冀%许凡%马玉周%杨屹
張冀%許凡%馬玉週%楊屹
장기%허범%마옥주%양흘
三塘湖%哈尔加乌组%火山岩%构造环境%时代判别
三塘湖%哈爾加烏組%火山巖%構造環境%時代判彆
삼당호%합이가오조%화산암%구조배경%시대판별
Xingjiang%Santanghu%Haljiawu formation%Volcanic rock%Structural environment%Age discrimination
通过三塘湖盆地黄土山-克孜勒塔格地区哈尔加乌组火山岩类型、成因特点及区域构造背景,探讨其岩石学和地球化学特征.结果显示火山岩属正常火山岩类型.演化过程为碰撞造山中增厚的岩石圈根部拆沉作用使得软流圈地幔上涌底侵,导致早期陆壳组分熔融引起火山喷发,形成晚古生代后碰撞期火山岩.据生物化石、岩性特征及同位素数据,推断哈尔加乌组为二叠纪火山活动产物.
通過三塘湖盆地黃土山-剋孜勒塔格地區哈爾加烏組火山巖類型、成因特點及區域構造揹景,探討其巖石學和地毬化學特徵.結果顯示火山巖屬正常火山巖類型.縯化過程為踫撞造山中增厚的巖石圈根部拆沉作用使得軟流圈地幔上湧底侵,導緻早期陸殼組分鎔融引起火山噴髮,形成晚古生代後踫撞期火山巖.據生物化石、巖性特徵及同位素數據,推斷哈爾加烏組為二疊紀火山活動產物.
통과삼당호분지황토산-극자륵탑격지구합이가오조화산암류형、성인특점급구역구조배경,탐토기암석학화지구화학특정.결과현시화산암속정상화산암류형.연화과정위팽당조산중증후적암석권근부탁침작용사득연류권지만상용저침,도치조기륙각조분용융인기화산분발,형성만고생대후팽당기화산암.거생물화석、암성특정급동위소수거,추단합이가오조위이첩기화산활동산물.
@@@@Bstract: By exploring the volcanic rock types,formation characteristics and the regional tectonic setting of the Halji-awu formation in Santanghu basin,Huangtushan-keziletage area,prove the Volcanic rocks is normal volcanic rock types. The evolutionary process is thickened lithosphere root delamination resulting in the asthenosphere upwelling in the man-tle underplating during collision orogeny,and resulting in volcanic eruptions by partial melting of the arc components, formed a post-collisional volcanic rocks of Late Paleozoic.By fossils,lithological characteristics and isotopic data results to determine,the Haljiawu formation was product of Permian volcanic activity.
