on March 31, 2022
What is the mineral composition of scoria?
GeologyScoria is a volcanic igneous rock. Also referred to as scoriaceous basalt, a term commonly used to indicate a basaltic pumice. It is commonly composed of approximately 50% silica and 10% calcium oxide with lesser contents of potash and soda. What is the composition and texture of a scoria? Texture: aphanitic and vesicular (contains abundant
on March 31, 2022
When was the last time Popocatepetl volcano erupted?
GeologyAfter lying inactive for more than 70 years, Popocatépetl erupted in December 1994, causing an ashfall over Puebla. Volcanic activity recurred in March and October 1996, as well as in April 1997, and in December 2000 thousands of villagers were forced to evacuate after another eruption. When did Popocatepetl erupt in 2021? Ash plumes at
on March 31, 2022
Where are the most earthquakes in the United States?
GeologyWhat are the four most earthquake prone areas of the United States? Rank State Number of strong earthquakes from from . 1 Alaska 12,053 2 California 4,895 3 Hawaii 1,533 4 Nevada 788 What are the 5 most earthquake prone states in the US? The Most Earthquake Prone US States Rank State Number of strong
on March 31, 2022
How was the Australian continent formed?
GeologyAustralia as a separate continent began to form after the breakup of Gondwana in the Permian, with the separation of the continental landmass from the African continent and Indian subcontinent. Australia rifted from Antarctica in the Cretaceous. How was the continent of Australia formed for kids? During the past 10,000 years, rising sea levels overflowed
on March 31, 2022
What is an example of transform boundaries?
GeologyThe most famous example of a transform boundary is the San Andreas Fault in California. The west side of California is moving north, and the east side is moving south. What are some examples of transform boundaries? Some examples of continental transform boundaries are the famous San Andreas fault, the Alpine fault in New Zealand,
on March 31, 2022
What is the hardness basalt?
GeologyThe rock hardness of basalt is 6 as per the Mohs scale and can be observed through a combination of its compressive strength. Generally, 100-300 Mpa or Megapascal is the compressive strength. Is basalt hard or brittle? basalt Hard, fine-grained, basic igneous rock, which may be intrusive or extrusive. There are many types of basalt
on March 31, 2022
How do you spell mantel for fireplace?
GeologyIn modern usage, mantel refers to a shelf above a fireplace and mantle refers to a cloak or covering. “Mantle” is also used metaphorically when describing the transfer of power such as when one “takes on the mantle.” Some still identify these words as spelling variants, but you are better off separating them. What is
on March 31, 2022
What is the definition of Moraine in Science?
GeologyA moraine is material left behind by a moving glacier. This material is usually soil and rock. Just as rivers carry along all sorts of debris and silt that eventually builds up to form deltas, glaciers transport all sorts of dirt and boulders that build up to form moraines. What are the two types of
on March 31, 2022
Can you see lava in Hawaii?
GeologyQ: Can you see lava in Hawaii right now? Yes! The currently ongoing eruption is contained within the Halemaʻumaʻu crater. Check out our often updated viewing tips for how to best see the lava. Can you see the lava lake in Hawaii? The bursting spatter cone and lava lake is visible from the south rim
on March 31, 2022
What is the difference between absolute and relative time?
GeologyRelative time is the physical subdivision of the rocks found in the Earth’s geology and the time and order of events they represent. Absolute time is the measurement taken from the same rocks to determine the amount of time that has expired. Whats the difference between absolute and relative time? There are two types of