Borehole images can capture detailed sedimentological information, with the detail only limited by tool resolution, borehole coverage and data quality. Sedimentary facies of the logged formation can be interpreted in a similar way to core facies analysis. As these data are captured digitally, thickness distribution and statistical analysis are readily generated. Palaeotransport trends are determined through analysis of depositional features such as cross-bedding, after structural de-rotation. In the deep marine realm palaeoslope orientation can be determined through the analysis of sedimentary remobilisation fabrics such as slumps and slides.
Aoelian Cross-sets in Navajo Sandstone, Zion National Park, Utah
Photo Courtesy of Mark Johnson 2014