CAJ | 학술논문

最近在湖南宝山矿区发现了煌斑岩脉，岩石样品具有典型煌斑结构，斑晶矿物主要为辉石、长石、黑云母及石英。SiO 2含量为50.23%~51.29%，(Na 2 O+K 2 O)为4.65%~5.63%，K 2 O/Na 2 O值为1.89~7.77。根据TAS图解和SiO 2-Nb/Y图解投点，宝山煌斑岩为碱性系列钙碱性煌斑岩。煌斑岩过渡族元素配分型式为“W”形，相对富集Ti、Mn 和Zn，明显亏损Cr、Co和Ni；微量元素表现为Th和LREE强烈富集并伴有K、Sr和Ba相对亏损的特征。煌斑岩中的锆石为岩浆锆石，U-Pb定年结果为(156±2) Ma，煌斑岩浆来源于受到俯冲组分改造的富集地幔。湖南宝山矿区煌斑岩的产出显示了燕山期深部岩浆活动的踪迹，反映燕山期区域陆内伸展的大地构造背景。
최근재호남보산광구발현료황반암맥，암석양품구유전형황반결구，반정광물주요위휘석、장석、흑운모급석영。SiO 2함량위50.23%~51.29%，(Na 2 O+K 2 O)위4.65%~5.63%，K 2 O/Na 2 O치위1.89~7.77。근거TAS도해화SiO 2-Nb/Y도해투점，보산황반암위감성계렬개감성황반암。황반암과도족원소배분형식위“W”형，상대부집Ti、Mn 화Zn，명현우손Cr、Co화Ni；미량원소표현위Th화LREE강렬부집병반유K、Sr화Ba상대우손적특정。황반암중적고석위암장고석，U-Pb정년결과위(156±2) Ma，황반암장래원우수도부충조분개조적부집지만。호남보산광구황반암적산출현시료연산기심부암장활동적종적，반영연산기구역륙내신전적대지구조배경。
The lamprophyre vein from Baoshan minning area, southern Hunan Province, is a new discovery, the rock sample has typical lamprophyric texture, the phenocryst minerals are pyroxene, feldspar, biotite and quartz. The contents of SiO 2 range from 50.23%to 51.29%, the values of Na 2 O+K 2 O range from 4.65%to 5.63%, the values of K 2 O/Na 2 O range from 1.89 to 7.77. According to figure of TAS and SiO2?Nb/Y, the samples belong to calc-alkaline lamprophyres of alkaline series. Distribution pattern for transitional-metal elements shows enrichment in Ti, Mn and Zn, obvious depletion in Cr, Co and Ni. The characteristics of trace elements show that strong enrichment in Th and LREE, relative depletion in K, Sr, Ba. The zircons collected from lamprophyre are magmatic zircons due to oscillatory zones, U-Pb dating results display the crystal average age of measured zircons is (156±2) Ma, the lamprophyre is derived from metasomatic enrichment lithospheric mantle. The discovery of lamprophyre from Baoshan suggests the trace of Yanhsanian deep basic magma activity, corresponding to regional intra-plate extensional tectonic background in Yanshanian stage.