Indicating significance of Cenozoic zircon fission track ages of the Jiyang depression to its provenance and tectonic background

Zircon fission track analyses of sediments of sedimentary basins can be used to trace its provenance characters and tectonic evolutional history. Central ages of zircon fission tracks of 9 Cenozoic sandstones from the Jiyang depression arrange from 183.1 plus or minus 15.0 Ma to 100.1 plus or minus 5.6 Ma, and all the single zircon grain age is bigger than its strata depositional age. Multiple component analyses of zircon fission track ages were calculated to the 6 samples which were not passed by chi -Test, and the results show that most sandstone samples mainly consist of two age components. As a whole, single component of zircon fission track ages of the 9 sandstones show a good coherence, and these can be concluded into four components which arranges from 389.1 plus or minus 5.1 Ma to 272.7 plus or minus 14. 6 Ma(P1), 238. 1 plus or minus 7. 8 Ma to 203.6 plus or minus 6.6 Ma(P2), 179.3 plus or minus 13.9 Ma to 96.8 plus or minus 17.8 Ma (P3), and 80.3 plus or minus 15.7 Ma to 55.3 plus or minus 6.0 Ma (P