What are the disadvantages of shaft mining?
Geology & LandformThere is also an air shaft that gives the mine ventilation. Because it is an underground mine it has the possibility to collapse. Like other forms of mining it can release toxic particles into the water and air that you and I breathe. The main toxin is mercury, which aids in the recovery of the
What is a mineralized fossil?
Geology & LandformFossils changed by minerals are said to be mineralized. They can also be called petrified, or turned into stone. The minerals may have completely replaced the original tissues or filled in the tiny spaces in and between the cells. What is fossil mineralization? A common mode of fossilization is mineralization, the replacement of organic material
What is Lithification and what are the two most common processes that result in a rock’s Lithification?
Geology & LandformDuring cementation, dissolved minerals crystallize and glue sediment grains together. Compaction and cementation, by far, represent the two most common processes involved in lithification, due to the widespread presence of soils and sediments worldwide. What are the two main processes of lithification? The main processes involved in lithification are compaction and cementation. What is lithification?
How is magnetic striping evidence of plate tectonics?
Geology & LandformWhen the Earth’s magnetic field reverses, a new stripe, with the new polarity, begins. Such magnetic patterns led to recognition of the occurrence of sea-floor spreading, and they remain some of the strongest evidence for the theory of plate tectonics.When the Earth’s magnetic field reverses, a new stripe, with the new polarity, begins. Such magnetic
Who discovered Conrad discontinuity?
Geology & LandformGutenberg Discontinuity In the year of 1912 Weichert Gutenberg discovered this discontinuity at the depth of 2900 km beneath the earth surface. In this zone the velocity of seismic waves changes suddenly. When was the Conrad discontinuity discovered? The seismological discovery of the Conrad Conrad (1925) discovered another discontinuity in South Germany and Austria where
How is limonite mined?
Geology & LandformIt is usually formed from the chemical weathering of iron rich minerals, such as biotite, amphibole, pyroxene, and olivine, the hydration/oxidation of iron rich sulfide minerals, or from the hydration of magnetite and hematite. Limonite is commonly deposited in run-off streams resulting from mining operations. How is limonite formed? Description: Limonite is a general term