论文部分内容阅读
豫西山地系指河南省西部中段,大致北以黄河为界,南至伏牛山岭,西达省界,东到嵩山,总面积2.68万平方公里。 本区地貌复杂,地势西高东低。西部为秦岭山脉向东的延伸,有北东走向的崤山、熊耳山、外方山及北西走向的伏牛山。华山山脉东延的小秦岭等,海拔一般约1000—2000米,部分山蜂超过2000米,东部为丘陵、河谷及盆地。境内有洛河、伊河、北汝河与宏农河等较大河流,伊河和洛河自西南向东北斜贯全区,于偃师杨村汇流后,注入黄河。山地面积占全区总面积的51.6％,丘陵占35.2％,其余为平原和盆地。 本区是河南沉积地层发育较好的地区之一。在太古界与下中元古界变质岩系基底之上沉积了上元古界震旦系、古生界、中生界、新中界,总厚度达万米以上。在中元古界与第三系中还伴有火山喷发岩。在巨厚的沉积地层中发育有种类繁多的沉积矿产资源,
The western Henan mountain refers to the middle of the western part of Henan Province, roughly to the north of the Yellow River, to the Funiu Mountain Ridge to the south, west to the provincial boundary, east to Songshan, with a total area of 26,800 square kilometers. The complex topography of the area, the topography of East West low. The western part of the Qinling Mountains extends eastward. There are the Nanshan, Xiong’ershan, the Outer Fangshan and the Funiushan towards the northwest in the northeast. East Qinling Huashan mountains such as the small Qinling, generally about 1000-2000 meters above sea level, some bees over 2000 meters, the eastern hills, valleys and basins. There are large rivers such as Luohe, Yihe, Northruhe and Wangonghe in the territory. The rivers of Yihe and Luohe run through the region from southwest to northeast and converge into Yanshi Yangcun, injecting into the Yellow River. Mountain area accounts for 51.6% of the total area of the region, hills occupy 35.2%, the rest of the plains and basins. This area is one of the better developed areas in Henan sedimentary strata. The Archean, Paleozoic, Mesozoic and Neocaridal of the Proterozoic metamorphic rocks were deposited on the basement of the Archean and Middle-Proterozoic metamorphic rocks. The total thickness is over 10,000 meters. In the Middle Proterozoic and Tertiary also accompanied by volcanic eruption rock. In the thick sedimentary strata in the development of a wide range of sedimentary mineral resources,