There are not only illite, but also asphalt, microcrystalline quartz, dolomite, calcite, anorthite, gypsum, and such as potential damage materials.

储层不仅含伊利，沥青、微晶英、白云、方解、钙膏等潜在损害物质。

The albite component increases while anorthic component decreases in detrital plagioclase.The plagioclase turned into an end - member component of albite.

斜碎屑中组分逐渐增多，钙组分逐渐减少，最终形成纯端元的。