prestratigraphy

例句：

1. 1. Pre-Quaternary stratigraphy is thestudy of rocks from before the tertiary epoch.
   第四纪以前的地层学研究的是第三纪以前时期的岩石。
2. 2.The pre-Quaternary stratigraphy of the region has been studiedextensively for its potential oil and gas resources.
   该地区的第四纪以前的地层学研究广泛，因为其潜在的石油和天然气资源。
3. 3. Pre-Quaternary stratigraphy provides insights into the evolution oflife on Earth during the Paleozoic era.
   第四纪以前的地层学为了解地球上在古生代时期的生命演化提供了见解。