There used to be igneousintrusions into coal measures and overlying strata in the Hanxing coalfield.
邯邢煤田煤系及其上覆地层中常有岩浆岩侵入体穿插。
2
Igneousintrusions such as batholiths, laccoliths, dikes, and sills, push upwards into the overlying rock, and crystallize as they intrude.
岩基、岩盖、岩堤、岩席等火成的侵入物向表层岩石推进，并在入侵过程中结晶。
3
Water in the subsurface below the water table. Groundwater is held in the pores of rocks, and can be connate, from meteoric sources, or associated with igneousintrusions.