Structural mapping in a sub-tropical region using Landsat-8 and SRTM data: A Case study of Deng-Deng area in Eastern Cameroon

The paper examine the capabilities of Landsat-8 and SRTM remote sensing data for regional scale structural mapping in a sub-tropical region, which is challenging due to heavy vegetation. Fracture sets are defined using statistical characterization of fracture orientation and genetic parameters. Detailed analysis of the overall structures led to the identification of two major networks corresponding to dextral and sinistral shear zones mainly oriented NE-SW. Fields investigation shows that the area has recorded structures such as foliation, intrafolic boudins, mylonitic schistosity, S/C fabrics and fractures, organized into three phases of deformation D1 to D3 and geological formations include intrusive granite in a metamorphic basement. Remote sensing results are consistent with field data.

本研究论文探讨了Landsat-8和SRTM遥感数据在亚热带地区进行区域尺度结构制图的能力，该地区由于植被茂密而极具挑战性。通过统计描述断裂方向和遗传参数，定义了断裂组。对整体结构的详细分析导致了两个主要网络结构的识别，这些结构对应于主要呈东北-西南走向的右旋和左旋剪切带。实地调查表明，该区域记录了如叶理、叶间流线、糜棱岩化片麻岩、S/C构造和断裂等结构，这些结构被组织成三个变形阶段D1至D3，地质构造包括在变质基底中的侵入花岗岩。遥感结果与实地数据一致。