by Gelogia Team | Jun 22, 2025 | Physical Geology
The Mercalli Intensity Scale provides a way to measure earthquakes not by scientific instruments alone, but by the effects felt by people and damage observed in the built environment. Unlike magnitude scales (which measure energy released), the Mercalli scale ranks an...
by Gelogia Team | Jun 20, 2025 | Physical Geology
A seismograph is an essential device used by scientists to measure and record earthquakes. By understanding how seismographs work, we can better interpret seismic activity and improve earthquake preparedness. How Does a Seismograph Work? A seismograph is the device...
by Gelogia Team | Jun 19, 2025 | Physical Geology, Structural Geology
Continental rifts are geological zones where the Earth’s crust is stretched and broken, forming deep fault-bounded valleys. These structures play a key role in understanding plate tectonics, continental breakup, and the formation of new ocean basins. This...
by Gelogia Team | Jun 17, 2025 | Hydrology, Physical Geology
Application of Seismic Refraction Measurements in Groundwater: Mapping of Buried Channels using Seismic Refraction: The most common use of the seismic method in hydrogeology is the determination of the thickness of sediments overlying non-water-bearing consolidated...
by Gelogia Team | Jun 15, 2025 | Hydrology, Physical Geology
The energy that moves sand along a beach comes from the wind-driven water waves that break upon the shore. As wind blows over the surface of an ocean or a lake, some of the wind‘s energy is transferred to the water surface, forming the waves that move through the...
by Gelogia Team | Jun 12, 2025 | Physical Geology
Ophiolites: Ophiolites are tectonically emplaced successions of mafic and ultramafic rocks that are considered to represent fragments of oceanic or back-arc basin crust (Coleman, 1977; Moores, 1982). Units of Ophiolites: An ideal ophiolite includes from bottom to top...
