Comparer des méthodes

	Classification des massifs rocheux	Analyse pétrographique
Domaine	Géosciences	Géosciences
Famille	Process / pipeline	Process / pipeline
Année d'origine	1974	1858
Auteur d'origine	Bieniawski and Barton	Henry Clifton Sorby
Type	engineering geology assessment pipeline	compositional characterization pipeline
Source fondatrice	Bieniawski, Z. T. (1989). Engineering Rock Mass Classifications. John Wiley & Sons.	Tucker, M. E. (2003). Sedimentary Rocks in the Field: A Color Guide (3rd ed.). John Wiley & Sons.
Alias	RMR system, Q-system classification, rock quality designation	microscopy analysis, thin section analysis, modal composition determination
Apparentées	4	5
Résumé	Rock mass classification is the systematic assessment of rock quality and mechanical behavior in engineering geology, combining field observations of jointing, weathering, and strength into a numerical index. Pioneered by Bieniawski (RMR system, 1974) and Barton (Q-system, 1974), these methods enable rapid site assessment and guide design of excavations, dams, and slopes. Classification bridges the gap between small laboratory samples and large field-scale behavior.	Petrographic analysis is the microscopic examination of rock thin sections to determine mineral composition, grain size, texture, and diagenetic alteration. Pioneered by Sorby in 1858, this method remains the gold standard for understanding lithology and has evolved to include quantitative image analysis and cathodoluminescence. Petrographic data anchor well-log interpretation, validate seismic velocity models, and constrain paleoenvironmental and diagenetic histories.