What was the largest earthquake ever recorded in California?
GeologyCalifornia’s Largest Recorded Earthquakes Since 1800, Ranked by Magnitude Magnitude Date Location 7.9 Jan. 9, 1857 Fort Tejon 7.8 April 18, 1906 San Francisco 7.4 Mar. 26, 1872 Owens Valley 7.4 Nov. 8, 1980 W. of Eureka* Is a 10.0 earthquake possible in California? No, earthquakes of magnitude 10 or larger cannot happen. The magnitude
What mountain range is Pittsburgh in?
Geologythe AppalachiansThe Alleghenies comprise the rugged western-central portion of the Appalachians. They rise to approximately 4,862 feet (1,482 m) in northeastern West Virginia.… Allegheny Mountains States Pennsylvania, Maryland, West Virginia and Virginia Parent range Ridge-and-valley Appalachians Borders on Cumberland Mountains Geology Are there mountains by Pittsburgh? He said that geographically, Pittsburgh is clearly in the
Why are some rocks black?
GeologyBrown, black, or very dark gray rocks may contain large concentrations of organic matter (decayed plant and/or animal matter) and were generally deposited in an environment lacking oxygen. A prime example is coal, but other examples include black and very dark gray shales. What causes rocks to turn black? Iron minerals in rocks deposited in
How does the shape of a stream channel affect flow?
GeologyThe shape and roughness of the channel also affect the velocity of the flowing water. A narrow channel that is V‐shaped or semicircular in cross section results in faster flow; a wide, shallow channel yields a slower flow because there is more friction between the water and the stream bed. How does channel shape affect
What does seismometer mean in geography?
Geologynoun. a seismograph equipped for measuring the direction, intensity, and duration of earthquakes by measuring the actual movement of the ground. What is seismometer in geography? Seismographs are instruments used to record the motion of the ground during an earthquake. They are installed in the ground throughout the world and operated as part of a
What are the two ways of dating fossils?
GeologyThere are two main methods determining a fossils age, relative dating and absolute dating. Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. What are the two methods of dating? The two main types of dating methods are relative and absolute. Relative dating
What are characteristics of intrusive igneous rocks?
GeologyIntrusive rocks are characterized by large crystal sizes, i.e., their visual appearance shows individual crystals interlocked together to form the rock mass. The cooling of magma deep in the Earth is typically much slower than the cooling process at the surface, so larger crystals can grow. What are the 3 characteristics of intrusive igneous rocks?
What is a Wadati Benioff zone and how does it help to define the location of subducting plates?
GeologyA subducting plate’s path (called the Benioff-Wadati [or Wadati-Benioff] zone) is defined by numerous earthquakes along a plane that is typically inclined between 30° and 60° into the mantle. What is a Wadati-Benioff zone simple? From Simple English Wikipedia, the free encyclopedia. A Wadati–Benioff zone is an area within the Earth’s crust where earthquakes frequently
Which would have a higher porosity a well sorted sediment or a poorly sorted sediment?
GeologyThus, well sorted sediments have higher porosity while poorly sorted sediments have low porosity. Permeability refers to how easily water passes through sediments and rock. Why do well sorted sediments have higher porosity? Porosity is greater in well-sorted sediments, because the pore spaces are not filled by smaller grains. Is porosity greater in well sorted
What type of volcano is Columbia Plateau?
GeologyOver 170,000 cubic kilometers (105,633 mi) of basaltic lava, known as the Columbia River Basalts, covers the western part of the province. These tremendous flows erupted between 17 million – 6 million years ago. What kind of volcano is Columbia Plateau? The Columbia Plateau flood basalts are a notable example of a “Large Igneous Province,”