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龙门山:自然与文化遗产宝库_绵阳新闻网


  绵延500公里雄伟壮观
  龙门山属于青藏高原东部大横断山区的一部分,它北抵米仓山,东南临四川盆地,西接岷山、邛崃山,由于它正当四川盆地西缘向高山过渡的地形转折处,因此远远望去显得尤其雄伟壮观。整个龙门山脉呈东北西南走向,北起青川、广元一带,经江油、北川、茂县、安州、汶川、都江堰、宝兴至天全附近,长约500公里,宽约70公里,几乎将整个四川一分为二。
  龙门山在地貌上,可分为前山和后山两部分。龙门山的前山与后山大致以北川-映秀大断层为界,前龙门山包括丘陵、低山、中山地貌,山势相对和缓,山岭海拔一般在2500米以下,山体主要由上古生界至中生界的地层及岩石构成。后龙门山主要是中山和高山,山体主要由前寒武系的花岗岩类岩石以及下古生界的地层及岩石构成,山的海拔多在3500米以 ....

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