With the successive discoveries of the lower Tertiary marine fossils in E. China, many geologists are of the opinion that the sedimentary basin in E. China had marine connections and underwent brief ingressions during...With the successive discoveries of the lower Tertiary marine fossils in E. China, many geologists are of the opinion that the sedimentary basin in E. China had marine connections and underwent brief ingressions during its lower Tertiary deposition. Our study on the Oligocene Calcareous Nannofossils in Liaohe Basin and Dongpu Basin (N. China) provides new data for the ingression issue.展开更多
It is well known that Edicaran fauna and the related old metazoan trace fossils in Precambrian strata with geological age about 600--800 Myr BP have been commonly recognized. Recently, the authors have for the first t...It is well known that Edicaran fauna and the related old metazoan trace fossils in Precambrian strata with geological age about 600--800 Myr BP have been commonly recognized. Recently, the authors have for the first time found a kind of trace very much展开更多
文摘With the successive discoveries of the lower Tertiary marine fossils in E. China, many geologists are of the opinion that the sedimentary basin in E. China had marine connections and underwent brief ingressions during its lower Tertiary deposition. Our study on the Oligocene Calcareous Nannofossils in Liaohe Basin and Dongpu Basin (N. China) provides new data for the ingression issue.
文摘It is well known that Edicaran fauna and the related old metazoan trace fossils in Precambrian strata with geological age about 600--800 Myr BP have been commonly recognized. Recently, the authors have for the first time found a kind of trace very much
