摘要
广西佛子冲铅锌（银）矿田内发育两个岩浆岩系列，即海西期弱碱质Ｓ型花岗岩系和燕山期钙碱质Ⅰ型花岗质火山岩系，两者的地球化学特征差异十分显著。钙碱质岩系由早期至晚期，其岩石特征参数、微量元素及稀土元素表现出规律性变化，反映出同源火山岩浆的演化特征。铅锌（银）成矿作用与钙碱质岩系，尤其是晚期浅成侵入体（次火山岩）密切相关。
There are two magmatitic rock series in the Fozichong ore field. the weak-alkalic Stype granite series (326±5Ma) and the alkali-calcic I-type granitoid volcanic rock of Yanshan period (152～75. 5Ma). Their geochemical character is very different. From early stage to late stage, the alkali-calcic series shows the regularity variety in the characteristic parameters of petrochemistry, trace element and REE which reveals that volcanic rocks are formed from same source magma. The mineralization of lead-zinc (silver) relates closely to the alkali-calcic series, particularly to the late-shallow-intrusion mass──subvolcanic rock.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第1期77-82,共6页
Acta Petrologica Sinica
关键词
岩浆岩
年代学
地球化学
铅锌矿床
银矿床
Magmatite
Chronometry
Chemistry
Ph-Zn(Ag)ore deposits
Fozichong
Guangxi
