Does plate tectonics cause continental drift?
GeologyContinental drift over millions of years was caused by plate tectonics. And plate tectonics also explained how the movement of the plates create volcanoes and earthquakes, and how the collision between continents gave rise to huge mountain ranges. How do plate tectonics relate to continental drift? Plate tectonics explains why Earth’s continents are moving; the
What is a glacial deposit called?
GeologyThe sediments deposited by glacial meltwater are called outwash. Since they have been transported by running water, the outwash deposits are braided, sorted, and layered. The broad front of outwash associated with an ice sheet is called an outwash plain; if it is from an alpine glacier it is called a valley train. What are
How do the vibrations known as seismic waves travel?
Geology⚡ Seismic waves are vibrations that travel through Earth carrying the energy released during an earthquake. ⚡ They carry energy from an earthquake away from the focus, through the Earth’s interior and across the surface. P Wave: ⌁ The first waves to arrive from the earthquake are “Primary Waves.” How do seismic waves travel? Seismic
What are the divisions of geologic time?
GeologyThe geologic time scale is divided into (from longest to shortest): eons, eras, periods, epochs and ages. What are the 4 divisions of geologic time? There are four major divisions: Precambrian, Paleozoic, Mesozoic, and Cenozoic. What are the three divisions of geologic time? The three major eras are the Paleozoic, the Mesozoic, and the Cenozoic.
What caused the 1964 tsunami?
GeologyOn March 28, 1964, at 03:28 GMT, an earthquake occurred in Prince William Sound of Alaska triggering a Pacific-wide tsunami. The earthquake had a surface-wave magnitude of 8.4, an epicenter of 61.1° N, 147.5° W, and a depth of 23 km. Did the 1964 Alaska Earthquake cause a tsunami? The 1964 Alaskan earthquake, also known
How likely is an earthquake in San Francisco?
GeologySan Francisco Bay area: Within the next 30 years the probability is: 72% that an earthquake measuring magnitude 6.7. 51% that an earthquake measuring magnitude 7. 20% that an earthquake measuring magnitude 7.5. Are earthquakes common in San Francisco? San Francisco is very vulnerable to earthquakes. Its three notable faults, covered below, are right-lateral strike-slip
What is andesite used for?
GeologyUses – can be used as aggregate, fill etc. in the construction and roading industries (often not ideal for concrete aggregate because of high silica content). What is andesite used for in real life? Andesite may be used as aggregate or fill, but it is not ideal for concrete applications because it is high in
Is conglomerate poorly sorted?
GeologyIn this setting, conglomerates are normally very well sorted, well-rounded and often with a strong A-axis type imbrication of the clasts. Is conglomerate rock poorly sorted? Streambed gravel (a sediment) or conglomerate (a sedimentary rock) containing sand and silt is an example of a rounded, poorly-sorted sediment (1st diagram). Is conglomerate sorted or unsorted? Most
What is the multiple meaning of fault?
Geologya defect or imperfection; flaw; failing: a fault in the brakes;a fault in one’s character. responsibility for failure or a wrongful act: It is my fault that we have not finished. an error or mistake: a fault in addition. a misdeed or transgression: to confess one’s faults. Sports. What are two meanings for the word
What is plucking and abrasion?
GeologyPlucking occurs when rocks and stones become frozen to the base or sides of the glacier and are plucked from the ground or rock face as the glacier moves. This leaves behind a jagged landscape. Abrasion occurs when rocks and stones become embedded in the base and sides of the glacier. What is abrasion in