Thrust event of the provenances revealed by zircon fission track ages in Tangyuan Fault-Basin, NE China

The zircon fission track ages of each sample, which were collected from Tangcan 2 well in the Tangyuan Faulted-Basin, have not been reset yet. The distribution of single grain age groups is discordant as well. According to Poisson distribution, binomial peak fitting is used to decompose grain age groups. In deposit sequence, the pooled ages of the youngest age groups are 119.7, 61.9, 141.9, 161.7, 115.8, 162.1, 149.9, 79.6, 114.3, and 94.0 Ma. Three inversions of the youngest age groups, which happened during 61.9–141.9, 115–162.1, and 79.6–114.3 Ma, respectively, were revealed. Therefore, further considering provenance sources change, paleo-geotemperature and 3D seismic data, we conclude that a thrust event had happened in Xiaohinganling Mountain after 61.9 Ma; additionally, two other thrust events had happened in the Hua’nan Rising after 115.8 and 79.6 Ma, respectively.