The landforms of Kyoto Basin which have been formed by tectonic movement are a striking forms in the Inner Zone of Kinki District, Central Japan.
This depression were afterwards buried by Osaka Formation, and the relative height between the surrounding mountainlands and depression were increased by the repeated deformations.
The preceding studies were not sefficient to explain preeisely the exact relation between faults and landforans.
The writer presumes that the major tectonic landforms being built up through the accumulation of the repeated micro-deforirations, and the pro-cesses of building up of basins in Kinki District are able to be explained by analyzing and synthesizing those repeated micro-deformations.
Therefore he traced the detailed aspect among regent movement, erosion and deposition for proving those processes, and researched the relation between tape faults and the landforms in the wetern border of Kyoto Basin.
The cixaraeteristic features of three tectonic lines have been pointed out by his field work as follows;
1. Katagihara Line which runs to N15° W; This line is a flexure in the younger deposits, and has, built up the east-facing steep slope between Otokuni Hills and the bottom of Kyoto Basin.
2.Talzahata Line which runs to N45° W; This line is also a flexure in the younger deposits and has built up the east-facing steep slope. But has showed faulting only between the Paleozoic rocks and the younger deposits.
3. Kanegahara Line which runs to N30° W; This line shows a sy iclinal structure in the younger deposits along the eaestrn side of it.
In the paleozoic rocks which distribute along the southern part of its line, the graben has been grown along this line and in the southern part of this line, the fresh scarp has, been built up between the paleozoic rocks and the younger deposits.
The movements along those line have occured according to increase the gradient between the mountainlands and the basin in last process of the sedimentary cycle of Osaka Formation. Kanegahara Line is the oldest one among them.
They are generally Similar each other though they are different in micro order, and it is interesting for him that their directions are traverse to the direction of Nishiyama Fault Scarp.
