| 宝山岩体——一个壳型花岗岩类含钨岩体地质地球化学特征与成矿 |
| |
| 引用本文： | 沈纪利.宝山岩体——一个壳型花岗岩类含钨岩体地质地球化学特征与成矿[J].岩石学报,1988,4(2). |
| |
| 作者姓名： | 沈纪利 |
| |
| 作者单位： | 江西地质科学研究所 江西南昌 |
| |
| 摘 要： | 从岩体产出的地质背景、岩石学、岩石化学、稀土元素特征、岩石熔化实验,Sr~(87)/Sr~(86)初始比值等资料的初步研究,表明岩体成因属壳型(相当徐克勤的陆壳改造型)花岗岩。但由於岩浆近地同化混染白云质灰岩,致使造岩矿物黑云母富含镁质,又具有过渡型(相当徐克勤的同熔型)花岗岩的某些特点。而钨、铅、锌(银)多金属矿床与该岩体有着成因上的联系。
|
| 关 键 词： | 宝山 花岗岩体 成矿作用 |
BAOSHAN INTRUSIVE BODY-GEOCHEMICAL FEATURES AND METALLOGENY OF A CRUSTAL-TYPE TUNGSTEN-BEARING GRANITOID INTRUSION |
| |
| Shen Jili.BAOSHAN INTRUSIVE BODY-GEOCHEMICAL FEATURES AND METALLOGENY OF A CRUSTAL-TYPE TUNGSTEN-BEARING GRANITOID INTRUSION[J].Acta Petrologica Sinica,1988,4(2). |
| |
| Authors: | Shen Jili |
| |
| Institution: | Geological Research Institute of Jiangxi Province |
| |
| Abstract: | Baoshan intrusive body is located at the southern part of Chongyi Country, Jiangxi Province, intruding the Carbonizerous and Permian strata, resulting in the formation of a W, Pb, Sn(Ag) poly-metal skarn deposit at the contact.
The intrusive body is of Late Yanshanian age, cropping out as a small stock over an area of 1.8 square kilometres.
According to petrological, petro-chemical and REE geochemical data, and to ~(87)Sr/~(86)Sr initial ratio and melting experiment of the rock, it belongs originally to crustal-type granitoid which corresponds to the continental crust-transformation type formulated by Xu Ke-qin. However, it also possesses some characteristics of transitional-type (syntaxis type) granitoids since its megnetite content is greater than 1% and its biotite is rich in magnesium.
On the basis of geological background studies enrichment of magnesium in biotite is thought to be caused by contamination by dolomitic limestones near the surface. |
| |
| Keywords: | Baoshan Granite body Mineralization |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩石学报》浏览原始摘要信息 |
| 点击此处可从《岩石学报》下载免费的PDF全文 |
|
