Physique de la terre solide, Observations et théories is a comprehensive French-language treatise on the physical properties of the Earth’s solid interior. Drawing on seismic data, mineral physics, and geodynamic modeling, the authors present a detailed account of the crust, mantle, and core, exploring how their composition, temperature, and dynamics shape the planet’s behavior. The book is organized into clear chapters that guide the reader from fundamental concepts—such as elastic wave propagation and phase transitions—to advanced topics like mantle convection patterns and core-mantle coupling. Illustrations, equations, and case studies illustrate key ideas, making the material accessible to graduate students and researchers in geophysics and related fields. With its rigorous analysis and up‑to‑date references, the text serves as both a textbook for advanced courses and a reference for professionals investigating Earth’s interior processes.