Knowra Petrology Petrology Petrology is the study of rocks, including their composition, origins, formation, and transformation. It combines field observations with mineralogical, chemical, and experimental evidence.
Mineralogy : The study of minerals, including their composition, structure, properties, and formation. Mineral identification reveals the ingredients and crystallization history of rocks.
Rock cycle : The set of geological processes through which rocks form, break down, and transform among major rock types. It links the formation and transformation processes studied across petrology.
Geological mapping : The representation of rock units, structures, and geological relationships across an area. Rock identification and interpretation establish the units and histories shown on geological maps.
Economic geology : The study of the distribution, origin, and extraction of Earth materials with economic value. It focuses on resource occurrence and use, while petrology examines rocks more broadly.
Rock (geology) : A naturally occurring solid aggregate of minerals or mineraloids that forms part of a planetary crust or mantle. Petrology studies rocks as materials and records of geological processes.
Igneous petrology : The study of rocks formed when magma or lava cools and solidifies. It examines crystallization, magma evolution, and volcanic or plutonic rock formation.
Geochronology : The science of determining the age of rocks, minerals, and geological events. Minerals in rocks can preserve dates that anchor their formation histories.
Structural geology : The study of rock deformation and the structures produced by geological forces. It emphasizes geometry and deformation; petrology emphasizes composition, formation, and transformation.
Petrography : The description and classification of rocks, especially through examination of thin sections under a microscope. Petrographic observation connects visible textures and minerals to rock history.
Sedimentary petrology : The study of sedimentary rocks, their constituents, formation, and diagenetic alteration. It traces how sediment becomes rock and records depositional environments.
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