Fig. 8
From: Formation of carbonate laminae in shale and their impact on organic matter in Dongying depression
Petrological and mineralogical characteristics of igneous rocks. (A): Well C102, gabbro, 2395 m, core photograph; (B): Well C102, gabbro, 2395 m, cross-polarized light, with a yellow arrow indicating the serpentinization of olivine; (C): Well C102, gabbro, 2395 m, scanning electron microscope image, with a yellow arrow indicating the alteration of volcanic minerals to kaolinite; (D): Well G81, basalt, 2448.9 m, core photograph showing yellow sulfur-filled fractures; (E): Well G81, basalt, 2448.9 m, cross-polarized light illustrating the alteration of volcanic minerals to chlorite, yellow arrow indicating chlorite; (F): Well B52, basalt, 1442 m, cross-polarized light, with a yellow arrow indicating the serpentinization of olivine.
