论文部分内容阅读
对陕西府谷老高川新第三纪“红层”岩石地层、磁性地层、生物地层的初步研究结果表明，该区上第三系一般含有中新统上部及上新统下部。上中新统地层的时代相当于Ｔｕｒｏｌｉａｎ的中、晚期，古地磁年龄约为７．４～５．３Ｍａ，其中含有多层哺乳动物化石；下上新统沉积的时代相当于Ｒｕｓｃｉｎｉａｎ的早、中期，古地磁年龄约为５．３～４．３６Ｍａ。二者在岩性、所含动物群的组合及其性质等方面都存在着较大区别。
A preliminary study of the lithosphere, magnetic stratum and biostratigraphy in the Neogene of the Neogene in Fugu, Fugu, Shaanxi Province shows that the Upper Tertiary in the area generally contains the Upper Miocene and the Lower Pleistocene. The epoch of the Upper Miocene strata is equivalent to the Middle and Late Turolian. The paleomagnetic age is about 7.4-5.3 Ma, which contains multiple layers of mammalian fossils. The age of the Lower Paleocene deposition is equivalent to that of Ruscinian in the early and middle stages , Paleomagnetic age is about 5.3 ~ 4.36Ma. There is a big difference between the two in terms of lithology, the assemblage and the nature of the fauna contained.