YANG Jie, engineer, majors in seismic geology and active fault detection, E-mail: yangj@gec.ac.com
We lay a shallow seismic exploration line L1 with a length of 10.77 km extended southward across Serteng mountain piedmont fault. The results show that the Sertengshan piedmont fault is clearly visible on the profile, and the main fault has bifurcations in the upper part, consisting of faults FP1.1 and FP1, both of which are normal faults with an apparent inclination towards the south. Combined with geological and geomorphological surveys, the latest active age of the FP1.1 fault is Holocene. We carry out a composite drilling geological section for the fault FP1 of the Serteng mountain piedmont fault and distinguish two faults, Fa and Fb. Based on the results of optical stimulated luminescence dating, the faults Fa and Fb are Holocene faults and the latest active age is later than 2.5±0.6 ka BP. The Serteng mountain piedmont fault has a forked structure near the surface, which reflects the multiple activities of the fault in the late Quaternary.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |