Thermochronology of Detrital Minerals in the Silurian Strata from Southern China and Its Geological Implications
Thermochronology of detrital minerals is auseful means to reveal the tectonic evolution of multi-cycle sedimentary basin. According to the fission track age of detrital zircon and apatitesamples collected from 5 areas of the Silurian strata in Southern China,the conclusion can be drawnthat the Silurian strata have experienced at least three regional uplifting and cooling events since Indosinian,in early Middle Triassic,Late Jurassic-Early Cretaceous and Eocene-Oligocene,respectively. Ofthem,the latter two are the key periods for reformation of Silurian strata. The former is the time in which the Silurian source rock stopped generatinghydrocarbon,while the latter went up to the surface,resulting in that the seal rock was destroyed intensively.