geologic ages造句

• A remnant or trace of an organism of a past geologic age , such as a skeleton or leaf imprint , embedded and preserved in the earth ' s crust
  化石埋置并保存于地层中的古生物遗体、遗物和其生活遗址，如骨骸、叶子的印痕等
• These geomorphic units of paleogeography constitute the basic model of paleocontinent , littoral - neritic sea and carbonate plateform at that stage , and this depositional model is similar to the pattern of the east china continent and ocean , which is the result of evolution during the past long geologic age
  这些古地理地貌单元构成了湖北省泥盆纪时期古陆滨浅海和碳酸盐岩台地的基本沉积模式，这种沉积模式与现今中国东海大陆、海洋格局基本一致，亦是经过了漫长地质历史时期演化，而形成现今这种格局的。