摘要
通过偏光显微镜研究和阴极发光技术,对黔南晚石炭世叶状藻礁灰岩的成岩作用做了详细研究,认为礁灰岩主要成岩作用类型有:生物黏结障积作用、泥晶化作用、胶结作用、压实压溶作用、破裂作用、重结晶作用和溶解作用等。根据岩石薄片阴极发光测试结果的观察、分析,将成岩过程划分为4个阶段:准同生成岩阶段、早期成岩阶段、埋藏成岩阶段和后生成岩阶段。通过各种成岩作用的标志性特征及它们在阴极发光下的特征,推测藻礁灰岩主要经历了海底成岩环境、大气淡水成岩环境和埋藏成岩环境。
Through the methods of polarizing microscope and cathodoluminescence, the diagenesis of Late Carboniferous phylloid algal reefs in southern Guizhou is studied, which indicates diagenesis are mainly of bio-binding and baffling actions, micritization, cementation, compaction-pressure solution, fracture, recrystallization and dissolution in type. Based on thin section analysis and cathodoluminescence, the diagenesis can be subdivided into four stages, including quasi-contemporaneous diagenesis phases, early diagenesis phase, burial diagenesis phase and epigenetic diagenesis phases. Diagenetic and cathodoluminescent characteristics show that the reefs have gone through marine, meteoric freshwater and buried diagenetic environment.
出处
《世界地质》
CAS
CSCD
2009年第1期11-19,共9页
World Geology
基金
国家自然科学基金项目(40572014)
关键词
黔南
晚石炭世
叶状藻礁
成岩作用
成岩环境
southern Guizhou
Late Carboniferous
phylloid algal reef
diagenesis
diagenetic environment
