一、区域地质概况河南省西部、北部及南部为山区,东部为广大平原区。山区基岩裸露。大地构造单元,以栾川—确山—固始深断裂为界,北侧属中朝准地台,南侧为秦岭褶皱系。黄河以南主要构造线呈北西西—北西向,黄河以北的太行山东麓主要构造线呈北北东向。北 First, the regional geological overview Henan Province, western, northern and southern mountains, east of the vast plains. Mountain bed rock exposed. The tectonic unit of the unit is bounded by the Luanchuan-Queshan-Gushi-Shengtu fault, with the North-China quasi-platform on the north side and the Qinling fold system on the south side. The main structural line to the south of the Yellow River is NW-NNW. The main tectonic line of the eastern foot of the Taihang Mountains north of the Yellow River is north-north eastward. north