by Gelogia Team | Jun 11, 2025 | Physical Geology
Convergent Margins: Convergent margins occur where the adjacent plates move toward each other and the motion is accommodated by one plate overriding the other. In plate tectonics, a convergent boundary, also known as a destructive plate boundary (because of...
by Gelogia Team | Jun 3, 2025 | Physical Geology
Seismology: Seismology (from Greek σεισμός “earthquake” and -λογία “study of”) is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies. Seismology studies seismic waves...
by Gelogia Team | Jun 1, 2025 | Hydrology
Classification of Aquifers: Geologically, they can be classified based on the age and composition of the sediments or rocks that host them. The four main types are: Holocene Aquifers Late Pleistocene-Holocene Aquifers (Unconsolidated to semi-consolidated):...
by Gelogia Team | May 31, 2025 | Petrology
Radiometric Dating: Introduction and Principles In the early part of the 20th century, scientists discovered radioactivity and the radiogenic decay of isotopes, which opened the way for dating rocks by an absolute rather than a relative method. Up to that time,...
by Gelogia Team | May 30, 2025 | Mineralogy
Mineral Grains in Sandstones: A very large number of different minerals may occur in sandstones, and only the most common are described here. Quartz: Quartz is the commonest mineral species found as grains in sandstone and siltstone. As a primary mineral, it is a...
