High-resolution imaging of the High Agri Valley Basin (Southern Italy) with electrical resistivity tomography
High-resolution imaging of the High Agri Valley Basin (Southern Italy) with electrical resistivity tomography
复制标题
使用电阻率断层扫描对高农业谷盆地（意大利南部）进行高分辨率成像
DOI：
10.1016/j.tecto.2004.03.017
复制
发表时间：
2004
期刊：
影响因子：
2.9
通讯作者：
E. Rizzo
中科院分区：
文献类型：
--
作者：
A. Colella;V. Lapenna;E. Rizzo
首次展示了通过电阻率断层扫描获得的断层控制的高农业谷盆地的高分辨率图像。农业谷是亚平宁链第四纪断层网络中较为复杂的组成部分之一。前第四纪基岩的几何形状、主断裂的位置和倾角以及盆地的构造演化仍然是一个有争议的话题。因此，将深部电阻率层析成像与地层分析相结合，以提高对盆地地质背景的了解。高分辨率电图像使我们能够重建盆地的复杂几何形状。电成像突出显示了该盆地的不规则形状，该盆地以浅断层为界，并充满更新世冲积沉积物。在纵向剖面上，盆地表现为断层边界块体的镶嵌，形成由盆内高点分隔的三个不同的沉积中心。从横剖面看，盆地呈不规则地堑，局部向东北不对称，并因对生断层发育次生地堑。
The first high-resolution images of the fault-controlled High Agri Valley Basin obtained with the electrical resistivity tomography are presented. The Agri Valley is one of the more complex components of the Quaternary fault network of the Apennine chain. The geometry of the pre-Quaternary bedrock, the location and dip of the master fault and the tectonic evolution of the basin are still a subject of debate. Therefore, deep electrical resistivity tomography integrated with stratigraphic analyses has been carried out to improve knowledge of the geological setting of the basin. The high-resolution electrical images allow us to reconstruct the complex geometry of the basin. The electrical imaging highlights the irregular shape of the basin, which is bordered by shallow faults and filled with Pleistocene alluvial deposits. In longitudinal cross-section, the basin appears as a mosaic of fault-bounded blocks forming three different depocenters separated by intrabasinal highs. In transverse cross-section, the basin is an irregular graben, locally asymmetric to the northeast, and with secondary grabens due to antithetic faults.