Application of the ecostratigraphic method to 1∶50 000 regional geological mapping
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摘要: 通过 1∶5万生态地层填图试点 ,总结了生态地层剖面测制、生态地层基本填图单元———群落的建立以及生态地层填图的具体步骤和工作方法。将研究区内作为生态地层填图试验的以泥盆系为主的沉积地层划分为 12个古生物群落 ,通过填图查明了各群落空间展布及时限 ,提高了地层划分对比的精度。Abstract: The concrete procedures and methods for the measurements of ecostratigraphic sections, establishment of basic ecostratigraphic mapping units—communities—and ecostratigraphic mapping have been summarized through 1∶50 000 trial ecostratigraphic mapping. The Devonian dominant sedimentary strata that are chosen for trial ecostratigraphic mapping in the study area are divided into 12 communities. Through ecostratigraphic mapping the spatial distribution and time range of various communities have been ascertained and the precision of the stratigraphic division and correlation has been raised.
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Key words:
- Longmen Mountains /
- community /
- ecostratigraphic /
- mapping method
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