摘要
在研究国内外砂岩分类的基础上 ,提出一个新的较适用的砂岩分类方案。先按砂岩中杂基含量分为两大类 ,杂基 <15 %为净砂岩 ;杂基 >15 %杂砂岩。分类三角图的三个端元是石英 (Q)、长石 (F)、岩屑 (R)。砂岩分 3类 :Q >75 %为石英砂岩类 ;Q <75 %的砂岩分两类 ,即长石砂岩类 (F >R)和岩屑砂岩类 (R >F)。石英砂岩类分 4种 :纯石英砂岩、石英砂岩 ,长石石英砂岩和岩屑石英砂岩。长石砂岩类分 3种 :长石砂岩、岩屑长石砂岩、次长石砂岩。岩屑砂岩类分 3种 :岩屑砂岩。
On the basis of studying foreign and domestic sandstone classification, this paper suggests a new, suitable sandstone classification. Firstly, according to the matrix content, sandstone is divided into two categories: the sandstone with matrix <15% is anenite; matrix>15% is wacke. Three end members on the classification triangle chart are quart (Q), feldspar (F) and rock debris(R). Sandstone is divided into three classes. The sandstone that has Q>75% is quart sandstone, which has Q<75% and F>R is feldspathic sandstone, which has Q<75% and R>F is lithic sandstone. Quart sandstone is divided into four types: pure quartzose< sandstone, quartzose sandstone, feldspar quartzite, and lithic quartzite. Feldspathic sandstone is divided into three types: arkoses, lithic arkoses, subarkose. Lithic sandstone is divided into three types: litharenite, feldspar litharenite, sublitharenite.
出处
《西南石油学院学报》
CSCD
2002年第5期11-14,共4页
Journal of Southwest Petroleum Institute
关键词
砂岩
分类
方案
图
杂基含量
sandstone
classification
new proposal
chart
