The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
hai nan dao yan shan wan qi dian xing qin ru yan kuang wu cheng fen te zheng ji qi di zhi yi yi
Author(s): 
Pages: 14-21
Year: Issue:  1
Journal: GUANGDONG GEOLOGY

Keyword:  矿物成分岩石成因侵入岩海南岛;
Abstract: 分析了海南岛燕山晚期典型的屯昌岩体、千家岩体和保城岩体中的钾长石、斜长石、黑云母和角闪石的化学成分和成因特点.结果表明:(1)多数钾长石晶体的Or含量小于90,具岩浆结晶成因特征.大部分斜长石属奥长石-中长石,An含量与岩石的SiO2成负相关关系,显示岩浆发生了较高程度的结晶分异作用.(2)黑云母为镁质黑云母,主要为岩浆结晶成因,部分为耐熔残余.角闪石均为钙质角闪石类,既有岩浆成因的,也有次生交代成因的,以相对贫铝、富镁、(Na+K)A低为显著特点.(3)岩体最终定位深度可能小于等于3.3 km,温度大于等于750°C,具深源、高温、浅侵位特征.
Related Articles
No related articles found