This book is based on the accepted papers for presentation at the 3rd MedGU Annual Meeting, Istanbul 2023. With four parts spanning a large spectrum of geological and geophysical topics, this book presents a series of newest research studies that are nowadays relevant to Middle East, Mediterranean region, and Africa. The book covers various topics from the fields of (1) sedimentology, stratigraphy, paleontology, (2) geochemistry, mineralogy, petrology, volcanology, (3) structural geology, tectonics, geodynamics, petroleum geology, (4) petroleum and energy sciences and engineering, (5) astrogeology, impact craters and meteorites, and (6) climate and sea-level change during the Cenomanian-Turonian Anoxic Event: Synthesis of sedimentological, micropaleontological and geochemical records. The content of these papers provides new scientific knowledge for further understanding on landslides, new stabilization techniques, importance of geophysics for engineering geology investigations as well as new empirical approaches for easily predicting some physical and hydrogeomechanical properties of geomaterials.