关键词: 剥蚀厚度, 恢复, 地震资料, 不整合面, 构造层

Abstract: According to the geological data of the Southwestern Tarim Basin,authors have restored the strata erosion thickness of the area by use of these methods which are the thickness ratio of the nearby layers,the change ratio of reference layer thickness,and combining with traditional acoustic transit time and the deposition rate.To restore the strata erosion thickness by the thickness ratio of the nearby layers is based on the characteristic which the deposit has the heritage and succession in the same tectonic layer,and according to the thickness ratio of completely preserved nearby layers and the thickness of underlying layers;To restore the strata erosion thickness by the change ratio of reference layer thickness is chosen a complete layer as the reference layer in the bottom of erosion strata of the calculation points,and the change ratio of reference layer thickness is regarded as the change ratio of the whole strata thickness.Because the seismic data has been adopted,the reference points are many and the reliability is increased.Based on the thickness data,the strata erosion thickness has been calculated almost in all instances with the far ranging adaptability.

Key words: erosion thickness, restoration, seismic data, unconformity, tectonic layers