摘要
通过济阳坳陷第三系不整合结构矿物学、元素地球化学特征分析发现，不整合结构具有富铁（Fe）、铝（Al）、钛（Ti），贫钙（Ca）、镁（Mg）、钠（Na）的变化特征，矿物含量上具有长石、方解石蚀变和石英、黏土矿物富集的特征，其中元素和矿物的淋失、富集以风化黏土层最为强烈。据此建立了济阳坳陷不整合结构的铝（Al）-（钙＋钠）（CN）-钾（K）判识图版和石英（Q）-（长石（PL）＋方解石（CA））-黏土矿物（CL）判识图版，这2类判识图版可以对不整合结构进行定量划分，有效地指导了研究区与不整合相关油气藏的勘探开发。
The analyses of the mineralogical and element geochemical characteristics of the unconformity structure in Tertiary of Jiyang Depression show that the structure possesses the following change features： rich in Fe, Al and Ti; lack of Ca, Mg and Na; Feldspar and calcite leached out, quartz and clay minerals concentrated, especially in the weathered clay. In view of the above, the Al-CN-K and Q-PL ＋ CA-CL identifying chart boards are established to recognize the unconformity structures in Jiyang Depression. The two boards are able to quantitatively subdivide the unconformity structures so the exploration and development of the hydrocarbon reservoir related to the unconformity can be effectively guided.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2011年第1期21-24,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
中国石化重点科技攻关项目（P06012）资助.
关键词
济阳坳陷
不整合结构
矿物学
元素地球化学
结构判识
判识图版
Jiyang Depression
unconformity structure
mineralogy
element geochemistry
structure recognition
identifying chart board
