on April 16, 2022
What happens if an earthquake hits the San Andreas Fault?
GeologyDeath and damage About 1,800 people could die in a hypothetical 7.8 earthquake on the San Andreas fault — that’s according to a scenario published by the USGS called the ShakeOut. More than 900 people could die in fires, more than 600 in building damage or collapse, and more than 150 in transportation accidents. What
on April 16, 2022
Why are there different types of volcanoes?
GeologyWhen magma erupts at the surface as lava, it can form different types of volcano depending on: the viscosity, or stickiness, of the magma. the amount of gas in the magma. the composition of the magma. How are the volcanoes different? There are three main types of volcano – composite or strato, shield and dome.
on April 16, 2022
What happened during the Neogene period?
GeologyDuring the Neogene Period, the polar ice thickened and took up more space in the ocean. The new mountains trapped water as snow and ice. All of this ice formation caused sea levels to drop even more. The drop in sea levels opened up land bridges between continents. What was the Neogene period known for?
on April 16, 2022
Which state law prohibits the construction of human occupied structures within 50 feet of an active fault?
GeologyThe Alquist-Priolo Earthquake Fault Zoning Act prohibits the location of structures for human occupancy across the trace of an active fault; this prohibition is codified in various state codes and regulations. Why is it called Alquist Priolo? The Alquist-Priolo Earthquake Fault Zoning Act was signed into California law on December 22, 1972, to mitigate the
on April 16, 2022
What are the six geographic provinces of Pennsylvania?
GeologyPennsylvania contains six physiographic provinces that reflect the geologic-topographic relationships.…From the northwest to the southeast, these include the following: Central Lowlands. Appalachian Plateaus. Ridge and Valley. New England. Piedmont. Atlantic Coastal Plain. What is the geographic region of Pennsylvania? Pennsylvania is classified as a Middle Atlantic state, along with New York, New Jersey, Delaware, and
on April 16, 2022
Where is olivine found in the world?
GeologyTypical Location Olivine is often found in dark-colored igneous rocks found in the surface of the Earth. These rocks are often located in tectonic plates and divergent plate boundaries. Olivine has a high crystallization temperature which makes it one of the first mineralize to crystallize from the Earth’s heat. Is olivine rare on Earth? Olivine
on April 16, 2022
What is hypocenter in earthquake?
GeologyAn earthquake’s hypocenter is defined as the temporal and spatial coordinates where seismic waves are first generated. What is the difference between a hypocenter and earthquake? The epicenter is the point on Earth’s surface directly above where an earthquake occurs along a fault. The hypocenter is the actual point at which the earthquake occurs along
on April 16, 2022
Do rocks have luster?
GeologyLustre (British English) or luster (American English; see spelling differences) is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux, meaning “light”, and generally implies radiance, gloss, or brilliance. What is the luster of a rock? Luster: A mineral’s luster is
on April 16, 2022
Where does Pipestone come from?
GeologyUtah pipestone is a by-product of slate mining in Delta, Utah, and several natural deposits have been mined and used for pipemaking by Native Americans in the area for millennia. The Canadian quarry is no longer used, although there are quarries in Canada where another type of pipestone, black stone, is gleaned. Where can pipestone
on April 16, 2022
What are the causes of the Christchurch earthquake?
GeologyThe earthquake was caused by the rupture of a 15-kilometre-long fault along the southern edge of the city, from Cashmere to the Avon–Heathcote estuary. The fault slopes southward beneath the Port Hills and did not break the surface – scientists used instrument measurements to determine its location and movement. What fault caused the 2010 Christchurch