价值工程
價值工程
개치공정
VALUE ENGINEERING
2014年
9期
298-300,301
,共4页
滇西北%维西地区%基础地质%新认识
滇西北%維西地區%基礎地質%新認識
전서북%유서지구%기출지질%신인식
Northwest Yunnan%Weixi region%basic geology%new understanding
经1：25万区域地质调查，滇西北维西地区的基础地质取得4个方面的新认识：①石鼓群进一步划分为石鼓岩群(Pt1S.)、巨甸岩群(Pt3J.)，二者的变形变质特征有明显差别；②吉岔超镁铁-镁铁岩带进一步划分为吉岔超镁铁-镁铁-斜长花岗岩带、维登镁铁岩带，二者的岩体产状、接触关系、岩石组合、变形变质特征有明显差别，成因类型分属科迪勒拉型蛇绿岩、沿断裂带侵入的镁铁岩；③鲁甸花岗岩划分为拉美荣超单元(T1-2LM)、打米杵超单元(T3DM)，二者的构造背景、成因类型、就位机制、岩浆活动时期有明显差别，是拜惹布错原若拉岗日原金沙江结合带俯冲消减、碰撞造山的物质记录；④维西地区构造变形划分为3个造山阶段、4期变形旋回、6个构造群落，较完整地反映了金沙江、澜沧江洋盆的形成前、演化期及消亡后的构造运动和构造变形情况。
經1：25萬區域地質調查，滇西北維西地區的基礎地質取得4箇方麵的新認識：①石鼓群進一步劃分為石鼓巖群(Pt1S.)、巨甸巖群(Pt3J.)，二者的變形變質特徵有明顯差彆；②吉岔超鎂鐵-鎂鐵巖帶進一步劃分為吉岔超鎂鐵-鎂鐵-斜長花崗巖帶、維登鎂鐵巖帶，二者的巖體產狀、接觸關繫、巖石組閤、變形變質特徵有明顯差彆，成因類型分屬科迪勒拉型蛇綠巖、沿斷裂帶侵入的鎂鐵巖；③魯甸花崗巖劃分為拉美榮超單元(T1-2LM)、打米杵超單元(T3DM)，二者的構造揹景、成因類型、就位機製、巖漿活動時期有明顯差彆，是拜惹佈錯原若拉崗日原金沙江結閤帶俯遲消減、踫撞造山的物質記錄；④維西地區構造變形劃分為3箇造山階段、4期變形鏇迴、6箇構造群落，較完整地反映瞭金沙江、瀾滄江洋盆的形成前、縯化期及消亡後的構造運動和構造變形情況。
경1：25만구역지질조사，전서북유서지구적기출지질취득4개방면적신인식：①석고군진일보화분위석고암군(Pt1S.)、거전암군(Pt3J.)，이자적변형변질특정유명현차별；②길차초미철-미철암대진일보화분위길차초미철-미철-사장화강암대、유등미철암대，이자적암체산상、접촉관계、암석조합、변형변질특정유명현차별，성인류형분속과적륵랍형사록암、연단렬대침입적미철암；③로전화강암화분위랍미영초단원(T1-2LM)、타미저초단원(T3DM)，이자적구조배경、성인류형、취위궤제、암장활동시기유명현차별，시배야포착원약랍강일원금사강결합대부충소감、팽당조산적물질기록；④유서지구구조변형화분위3개조산계단、4기변형선회、6개구조군락，교완정지반영료금사강、란창강양분적형성전、연화기급소망후적구조운동화구조변형정황。
After 1:25 0000 regional geological survey, there are four aspects of new understanding of the basic geology in Northwest Yunnan Weixi region: ①Shigu group is further divided into Shigu rock group (Pt1S.) and Judian rock group (Pt3J. ), and their deformation and metamorphism characteristics have a significant difference; ② Kyrgyzstan fork ultramafic-mafic rock band is further divided into Kyrgyzstan fork ultramafic-mafic-plagiogranite belt and Wyden mafic rock band, and their rock occurrence, contact relationships, rock combination, deformation and metamorphism characteristics are significantly different. The genetic types belong to the Cordillera type ophiolite and mafic intrusive rocks along the fault zone; ③Granite Ludian is divided into Lameirongchao unit (T1-2LM) and Damichuchao Unit (T3DM), and there are significant differences between the two in tectonic setting, genetic type, in place mechanisms and magmatic activity period, that is the material record of Bairebucuo-Ruolagangri-Jinsha river combination belt subduction, collision mountain; ④ The tectonic deformation of Weixi region is divided into three orogenic stage, four deformation cycles, six community structures, which more complete reflects the tectonic movement and tectonic deformation of Jinsha river and Lancang river before the former period, evolution period and after demise period.
