Tectonics is concerned with the large-scale processes which affect the structure of the earth's crust. This book focuses on distinct characteristics of tectonic researches, primarily on modern geodynamic procedures. A combination of existing and new works, along with novel outcomes and interpretations, has been elucidated in this book for diverse tectonic settings. The book provides updated content on descriptive geological-geophysical investigations, which can help readers to comprehend the essence of mechanisms of distinct tectonic processes more vividly. Descriptive procedures in axes of slow-spreading mid-ocean ridges with an example of central part of Mid-Atlantic Ridge and in continental collision zones are some of the general problems of tectonics that have been presented in this book. Composition of sedimentary basins has been analyzed with examples of Niger Delta, Mesozoic and Cenozoic basins of the Alpine margin (Tunisia), and Triassic Cuyana Basin (Argentina). Neotectonic procedures in Morocco and Turkey have been evaluated; tectonic evolution of the southern margin of Laurasia in the Paleozoic has been discussed about; and interconnection of western Troms-Lofoten and the Lewisian complexes in the Middle Paleoproterozoic has also been elucidated.