This book focuses on the earthquake source materials produced or deformed by both seismic faulting and aseismic creep within seismogenic fault zones at different levels of the crust. In particular, the mechanisms and processes involved in the formation of earthquake materials are covered. The book is intended to help bridge the gap between seismology and geology and to encourage further studies of earthquake mechanisms and seismic faulting processes.

Terminology and Origin of Pseudotachylyte.- Pseudotachylyte-Related Fault Rocks and Conceptual Fault Models.- Tectonic Environment and Structure of Pseudotachylyte Veins.- Pseudotachylyte Matrix.- Microlites.- Fragments Within Pseudotachylyte Veins.- Chemical Composition and Melting Processes of Pseudotachylyte.- Formation of Pseudotachylyte in the Brittle and Plastic Regimes.- Crushing-Origin Pseudotachylyte and Veinlet Cataclastic Rocks.- Landslide-related Pseudotachylyte.- Experimentally Generated Pseudotachylyte.