by Gelogia Team | Feb 1, 2025 | Petrology
Types of Protoliths: The following rock properties allow the recognition of protoliths: Relict fabrics: In low-grade metamorphic rocks where recrystallization has not created large new grains or substantial deformation has not taken place, boundaries of original...
by Gelogia | Jan 26, 2025 | Petrology
Deviatoric Stress or Directed Pressure: Deviatoric stress is produced by tectonic forces in the Earth, such as plate motions; this pressure brings about change to produce foliations and lineation’s. This is commonly represented in terms of three stress values in the...
by Gelogia Team | Jan 24, 2025 | Petrology
Sedimentology, the study of sedimentary rocks and their formation, is essential in geology. Its applications span engineering, petroleum, hydrogeology, economic geology, environmental science, and paleontology. What is Sedimentology? There is a term called...
by Gelogia | Jan 8, 2025 | Petrology
Regional metamorphism actively transforms rocks over substantial regions under the influence of excessive temperature and pressure. Unlike contact metamorphism, which occurs in localized zones, It accompanies large-scale tectonic activities, such as mountain-building...
by Gelogia | Oct 27, 2024 | Petrology
Sediments are materials formed due to mechanical or chemical activity by the agents of denudation on preexisting rocks. They are deposited in a stratified fashion, layer after layer, at the surface of the lithosphere. Lithification of the sediments at relatively low...
by Gelogia | Nov 15, 2022 | Petrology, Uncategorized
Metamorphic Textures Small-scale features that occur in virtually all of the rock body at the microscopic scale The term ‘Fabric’ is also used synonymously. As the rock-forming processes differ among types of metamorphism, the resulting texture is also different....
