A reconstruction of basin genesis and sedimentation in the backarc rifts with multiple structural trends

这项研究旨在建立具有多个构造走向的弧后裂谷盆地的盆地成因和沉积重建。研究区包括新泻盆地北部中新世-上新世沉积及其承载的断层暴露较好的三个地点。在盆地形成过程中，几种不同的构造走向对裂谷边缘断裂和基底内其他小变形的形成起到了作用。然而，每个地区最有效的趋势因地而异。此外，基底上方厚度和沉积相的变化也受断裂活动的影响。这些成果将被纳入化石燃料勘探和灾害科学的研究中。

This study intended to establish a reconstruction of basin genesis and sedimentation of the backarc rift basins with multiple structural trends. The study area includes three localities in the northern part of the Niigata basin where Miocene to Pliocene sediments and faults hosted by them are well exposed. During the basin genesis, several different structural trends were effective to formation of rift-border faults and other minor deformation within the basement. However, the most effective trend in each area varies between the localities. In addition, variation in thickness and depositional facies right above the basement was affected by that of the fault activity. The results will be incorporated in studies in fossil fuel exploration and disaster science.