甘肃和政古动物化石地质遗迹特征及其科学意义

甘肃和政古动物化石地质遗迹是一个以丰富的渐新世至更新世的古动物化石为特色的地质奇观。和政古动物化石地质遗迹主要发育4个古动物化石群:底部红色砂砾岩中埋藏着距今30 Ma的巨犀动物群;下部河湖地层中,埋藏着13 Ma前的铲齿象动物群;中部以红土为主,埋藏着距今10 Ma左右的三趾马动物群;上部黄土堆积中埋藏着2 Ma前的真马动物群。这些古动物化石地质遗迹记录了渐新世以来地球历史的丰富信息和演化过程,是研究青藏高原隆升历史的重要证据。甘肃和政古动物化石地质遗迹孕育了分布密集、保存完好、种类繁多的古动物化石,且甘肃和政临近我国"一带一路"战略中"丝绸之路经济带"的中联点。这些世界罕见的古动物化石,具有不可替代的珍藏价值、游览价值、科普价值和科学研究价值。

Features of Mammalian Fossil Geoheritage in Hezheng,Gansu and their scientific significance

Hezheng(Gansu,China) mammalian fossil geoheritage is a geological wonder which is very rich in mammalian fossils. The Late Oligocene Dzungariotherium fauna,the Middle Miocene Platybelodon fauna,the Late Miocene Hipparion fauna,and the Early Pleistocene Equus fauna are the most representative in the Linxia Basin. The mammalian fossil geoheritage recorded the abundant information and the evolution history of the earth since Oligocene,revealed the outstanding witness of the Tibetan uplift. Hezheng(Gansu,China) mammalian fossil geoheritage with dense distributed, well preserved and a wide variety of mammalian fossils possess collection value,tourism value,popularization of science value and scientific value.