When was the last major earthquake to hit California?
Regional SpecificsCalifornia’s Largest Recorded Earthquakes Since 1800, Ranked by Magnitude Magnitude Date Location 7.1 July 5, 2019 Ridgecrest/Trona 7.0 May 18, 1940 El Centro 6.9 Oct. 17, 1989 Bay Area 6.7 Jan. 17, 1994 Northridge Can a 10.0 earthquake happen in California? No, earthquakes of magnitude 10 or larger cannot happen. The magnitude of an earthquake
What is the difference between basaltic andesitic and rhyolitic magma?
Regional SpecificsBASALTIC magmas have a LOW SILICA content (45-55%) and referred to as MAFIC in composition. RHYOLITIC magma contains more than 65% SILICA and is referred to as FELSIC. ANDESITIC magma is INTERMEDIATE in composition (55-65% SILICA). What is the difference between andesitic and basaltic? Both lavas are formed at different plate boundaries which is why
How rocks behave under different types of stress such as pulling apart?
Regional SpecificsWhen subjected to stress, the earth’s crust deforms. Stress can be simply defined as a force applied to a certain unit of volume. Every solid has a force of its own to resist the stress. When the stress exceeds the strength of the material, the object is deformed and a change in shape and/or volume
What does Moho stand for in earth science?
Regional SpecificsThe Moho is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. Also termed the Mohorovicic’ discontinuity after the Croatian seismologist Andrija Mohorovicic’ (1857-1936) who discovered it. What is the Moho quizlet? Moho. (n.) the
Where are most sedimentary rocks formed?
Regional SpecificsCommon Sedimentary Rocks: These rocks often start as sediments carried in rivers and deposited in lakes and oceans. When buried, the sediments lose water and become cemented to form rock. How are most sedimentary rocks formed? Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the
What happened in the Precambrian era?
Regional SpecificsThis era began with the formation of the earth from dust and gas orbiting the Sun about 4.6 billion years ago. During this era the surface of the Earth was like popular visions about Hades: oceans of liquid rock, boiling sulfur, and impact craters everywhere! What are some fun facts about the Precambrian era? –The