Summary Engineering Geology 214 - Igneous Rocks

These notes provide a comprehensive overview of igneous rocks and intrusive magmatic processes, focusing on how magma forms, moves, cools, and crystallizes to create different igneous rock types. Key topics include: - Formation and classification of intrusive igneous bodies - Cooling rates and factors affecting crystal growth - Igneous textures (glassy, aphanitic, phaneritic, and porphyritic) - Pegmatites and the concentration of rare minerals - Volcanic glass and pyroclastic rocks such as obsidian, pumice, scoria, tuff, and volcanic breccia - Igneous rock classification based on composition and texture - Major rock types including granite, diorite, gabbro, rhyolite, andesite, basalt, peridotite, and komatiite - The relationship between plate tectonics, magma generation, and igneous activity