The hydrothermal breccia and karst in the beiya area are divided into 4 types and zones , including : sedimentary tuff and breccia induced by hydrothermal explosion and sedimentation on land surface ; hydrothermal sedimentary conglomerate and gas - explosive ejecting breccia related to sedimentation in and collapsing of some shallow karst caves ; netted hydotherma1 limcstone breccia and hydrothermal explosive breccia pipe related to hydrofracturing , corrosion and explosion in the hydrothermal channels ; and yellow granular limestone formed by simmering and alteration in the deep heated water reservoir 北衙地區(qū)熱水角礫巖和熱水巖溶可分為4種類型和層次,即地表相爆發(fā)沉積作用形成的沉積凝灰角礫巖、熱水沉積鮞狀灰?guī)r與鈣華膠結(jié)角礫巖;與近地表洞穴沉積和垮塌作用有關(guān)的熱水沉積礫巖和汽爆射流角礫巖;與熱水通道相蝕裂和爆破角礫化作用有關(guān)的網(wǎng)絡(luò)狀灰?guī)r角礫巖筒和熱水隱爆角礫巖筒;深部相熱水浸煮蝕變灰?guī)r。