by Gelogia | Nov 4, 2022 | Petrology
Four types of Metamorphic agents Temperature Pressure Directive stress Chemically active fluid/metamorphic fluids Temperature In regular continental crust, a typical geothermal gradient within the first 3 to 5 kilometers (2 or 3 miles) of Earth’s surface is...
by Gelogia | Nov 1, 2022 | Petrology
What is Metamorphism? The term metamorphism comes from the Greek (meta morph), meaning “change of form. The International Union of Geological Sciences (IUGS) defined Metamorphism as – “a process involving changes in the mineral content/composition and/or...
by Gelogia | Feb 17, 2022 | Petrology, Physical Geology & Geomorphology, Structural Geology
Structural geology is concerned with rock deformation on both a big and microscopic scale. Its research ranges from submicroscopic crystal lattice flaws to fault formations and fold systems in the Earth’s crust. Structural geology advanced significantly in the...
by Gelogia | Feb 16, 2022 | Mineralogy, Petrology, Structural Geology
The study of rock deformation needs knowledge of the physical properties of rock about deformation. These properties are concerned either with elastic or with plastic deformation or with rupture. Table of Content Elastic propertiesPlastic propertiesRuptureBrittle...
by Gelogia | Jan 16, 2022 | Economic Geology, Mineralogy, Petrology
Ore is a naturally occurring sediment or rock deposit that contains one or two or more number of economically valuable minerals. E.g. Hematite, Magnetite, Basalt etc. The ore needs to find first, then extracted from the earth through mining. The concentration of...
