DETERMINATION OF DIVERGENT DIRECTION OF BILATERAL BLOCKS OF GRABENS

A new and simple technique is proposed for determination of divergent directions ofbilateral blocks of grabens using the structural geometry data. Futhermore, by applyingthis technique,the divergent directions of the graben in Liaodong Bay Basin is determinedas NNW6°and it is comfirmed by those(NNW5°)of Yilan-Yishu grabens at the north-ern extension of Laodong Bay Basin, which is determined by field investigation and the inversion stress tensor of microstructures.