摘要
该文对峨眉山龙门洞三叠系中统雷口坡组底部“绿豆岩”运用多种分析手段,了解绿豆岩的物质成分及其在农业上的应用。并结合野外观察,对其形成环境及成因进行初步探索。
These 'green-bean rocks' at the base of Middle Triassic Leikoupo Formation in Longmen-dong, Emeishan, Sichuan, have been studied with analyses of chemical, thermal, infrared absorptionspectroscopy, X-ray diffraction, polarized-light and electron microscopes. These analyses indicate thatmain components of 'green-bean rocks'are K-rich illite clays in which there are dispersed siliceouspisolites and a little montmorillonites. In general, mineral components are relatively simple, and theyhave a considerable distribution size. It is known that their K grade can meet the industrial requirementsfor minerals. These K-bearing rocks can be used as a variety of potash fertilizers. The results of this study that these 'green-bean rocks' was originated from eruptive volcanic ashdeposited in a supratidal-tidal flat environment and reformed through syngenesis-diagenesis.
关键词
绿豆岩
火山
喷发
成因
物质
成分
green-bean rocks
analyses of physical properties
sedimentary environment
volcanic eruption
