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...
by Gelogia Team | May 29, 2025 | Physical Geology & Geomorphology
The Bouma sequence specifically describes the ideal vertical succession of structures deposited by low-density (i.e., low sand concentration, fine-grained) turbidity currents. The Bouma sequence is divided into five distinct units, labelled A through E, with A at the...
by Gelogia Team | May 25, 2025 | Hydrology
What are Contaminants? Any solutes (contaminants) introduced into the groundwater environment. Contamination is the presence of a constituent, impurity, or some other undesirable element that renders something unsuitable, unfit, or harmful for the physical body,...
by Gelogia Team | May 23, 2025 | Physical Geology & Geomorphology
“E-waste” is a popular, informal name for electronic products nearing the end of their “useful life. It is considered dangerous, as certain components of some electronic products contain materials that are hazardous, depending on their condition and...
