lava field
1.On the basis of 1/10,000 active fault mapping in Fuzhou Basin, interpretation of aerial photos and detailed field investigation, 11 sites on six faults in the basin were selected for exploratory trenching. The main results of trenching are as follows: (1) Two trenches were dug across the Hutou-Miaopu Fault. One of the trenches reveals a fault plane, which is developed in lava bed and covered by Quaternary strata with an age of 75±6ka B.P.
