吉林地质
吉林地質
길임지질
JILIN GEOLOGY
2014年
2期
26-30
,共5页
汪清县六道崴子地区%碱长花岗岩%A型花岗岩%构造环境
汪清縣六道崴子地區%堿長花崗巖%A型花崗巖%構造環境
왕청현륙도외자지구%감장화강암%A형화강암%구조배경
Liudaowaizi area of Wangqing County%alkali feldspar granite%A type granite%tectonic environment
分布在汪清县六道崴子地区的碱长花岗岩,研究后认为是A型花岗岩。其特征是具晶洞构造,钾长石是中正微长石,斜长石为钠长石(An=1),SiO2、K2O、Na2O质量分数较高,CaO、MgO质量分数较低。∑REE质量分数为139.3,δEu为0.14,亏损十分明显,是非造山期拉张构造环境形成的碱性花岗岩。
分佈在汪清縣六道崴子地區的堿長花崗巖,研究後認為是A型花崗巖。其特徵是具晶洞構造,鉀長石是中正微長石,斜長石為鈉長石(An=1),SiO2、K2O、Na2O質量分數較高,CaO、MgO質量分數較低。∑REE質量分數為139.3,δEu為0.14,虧損十分明顯,是非造山期拉張構造環境形成的堿性花崗巖。
분포재왕청현륙도외자지구적감장화강암,연구후인위시A형화강암。기특정시구정동구조,갑장석시중정미장석,사장석위납장석(An=1),SiO2、K2O、Na2O질량분수교고,CaO、MgO질량분수교저。∑REE질량분수위139.3,δEu위0.14,우손십분명현,시비조산기랍장구조배경형성적감성화강암。
After researching, alkali feldspar granite that located in Liudaowaizi area of Wangqing County, is A type granite, which with miarolitic structure, potassium feldspar is microcline, plagioclase is albite (An=1), the mass fraction of SiO2, K2O, Na2O are high, which of CaO, MgO are low. The mass fraction of∑REE is 139.3,δEu is 0.14, its loss is obvious. That is alkali granite formed in extensional tectonic environment of non orogenic period.