adj.自生的

Locally dolomite and anhydrite are important as cements, together with minor authigenic quartz. 在局部地方白云石和硬石膏也是重要的膠結(jié)物；還有少量自生石英。

Authigenic pyrite is the normal product of anoxic sulfate reduction in marine sediments. 自生黃鐵礦是海洋沉積物缺氧硫酸鹽還原過程的主要產(chǎn)物。

The intervals around 500 cm of Core HD196A are enriched in authigenic pyrites, showing a rich zone of pyrites. 自生黃鐵礦是海洋沉積物缺氧硫酸鹽還原過程的主要產(chǎn)物。

The formation of authigenic clay minoral is related to clastic components of clastic rocks. 自生粘土礦物的形成與碎屑巖的碎屑組分有著密切的關(guān)系；

Authigenic minerals and their occurrence in the Meso-Cainozoic reservoir sandstones were observed and analyzed by optical microscope, SEM, EPMA and XRD. 采用光學(xué)顯微鏡、掃描電鏡、電子探針及X射線衍射觀察分析了塔里木盆地中新生界儲(chǔ)層砂巖自生礦物及其在巖石中的產(chǎn)狀。