The ratios of Fe/Ti, (Fe+Mn)/Ti, Al/(Al+Fe+Mn) and U/Th, and Al Fe Mn and Fe Mn (Ni+Co+Cu) diagrams show that the siliceous rocks are the sedimentary rocks of hydrothermal origin.

• Fe/Ti、（Fe＋Mn）/Ti、Al/（Al＋Fe＋Mn）、U/Th比值及Al?Fe?Mn、Fe?Mn?（Ni＋Co＋Cu）三角图均表明岩石为热水来源沉积岩。