Abstract
The Huoshiling Formation is the earliest volcanic stratum in the Songliao Basin. The report of geological age of it was rare, because of the lack of credible dating samples, which has seriously restricted the division and correlation of rift epoch strata, and the understanding of basin evolution. In this paper, the volcanic rocks of Huoshiling Formation whose lithostratigraphic characteristics are credible was found in LS101 Core, Yingtai Fault Depression, western Songliao Basin, and the zircon U-Pb geochronology research was carried out. The result provides new data for understanding the formation time of Huoshiling Formation. At the same time, it’s the first report of isotope age of volcanic rocks in Yingtai Fault Depression.
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