Paleo-environmental evolution of early Paleogene in the Sanshui Basin indicated from factor analysis of main elements

摘要

In this paper, factor analysis are used to study the early Paleogene paleo-environmental evolution from the Sanshui Basin, and main conclusions can be obtained as follows: stage I (89.0-73.0 m), relatively dry and relatively low temperatures; stage II (73.0-52.5 m), warm and humidity of the climate and environment; stage III (52.5-22.5 m), the ancient climate conditions change quickly, showing the alternating warm and humidity and dry; stage IV (22.5-0 m), prevailing warm and moist climatic conditions.