When was the last mudslide in California?
GeologyJanuary 9, 2018 Homes and streets of a neighborhood affected by the Santa Barbara County mudslides Date January 9, 2018 Location Southern California, United States Cause Soil saturation from heavy rainfall, and deforestation due to recent wildfires Deaths 23 Has there been mudslides in California? In California’s Colusa and Yolo counties, State Highways 16 and
What are the sedimentary processes?
GeologySedimentary processes, namely weathering, erosion, crystallization, deposition, and lithification, create the sedimentary family of rocks. What 4 processes form sedimentary? The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification. Erosion and weathering include the effects of wind and rain, which slowly break down large
What is eggrock?
GeologyWhat is egg rock made of? Egg rock is the name for a wide variety of smooth, oblong or round rocks also known as river rocks and beach pebbles. These rocks come in a large range of textures and sizes as well as a variety of colors. They are made of sedimentary rock that has
What was the magnitude of the Alaska earthquake in 1964?
Geologymagnitude 9.2magnitude 9.2 (moment magnitude) occurred in the Prince William Sound region of Alaska. How long did the 1964 Great Alaskan earthquake last? approximately 4.5 minutes The earthquake lasted approximately 4.5 minutes and is the most powerful recorded earthquake in U.S. history. It is also the second largest earthquake ever recorded, next to the M9.
Why have some open pit mines been declared Superfund sites?
GeologyWhy have some open pit mines been declared Superfund sites? The waters in the pit become highly acidic and contain high levels of toxic metals. The toxic waters of the Berkeley Pit make it one of the largest Superfund sites in the country. What are the causes of acid mine drainage? Acid mine drainage is
What will happen if one of the subsystems was removed?
GeologyWe know weather happens in the atmosphere, but without the hydrosphere, there would be no water to evaporate and so no cloud or rain could form. Without oceans and land (hydrosphere and geosphere), there would be no wind (as winds are produced by differences of air temperature between the land and oceans). How do Earth’s
What happened in the Paleocene epoch?
GeologyPaleocene Epoch (65.5 – 55.8 MYA) The Paleocene epoch immediately followed the extinction of the dinosaurs. The Earth’s climate was warmer than today, but cooler and drier than the epochs immediately preceding and following it. Europe and North America were connected, as were Asia and North America at times. What major events happened in the
How do fossils show evidence?
GeologyFossils provide solid evidence that organisms from the past are not the same as those found today; fossils show a progression of evolution. Scientists determine the age of fossils and categorize them all over the world to determine when the organisms lived relative to each other. How do fossils demonstrate evidence? Fossils are the preserved
Where is dolostone found?
GeologyAlthough rock beds containing dolomite are found throughout the world, the most notable quarries are located in the Midwestern United States; Ontario, Canada; Switzerland; Pamplona, Spain; and Mexico. How is dolostone formed? Dolostone forms when magnesium in pore water is substituted for some of the calcium in the original limestone, or by direct precipitation. Most
Which magma type has the highest silica content?
GeologyFelsic magmaFelsic magma has the highest silica content of all magma types, between 65-70%. As a result, felsic magma also has the highest gas content and viscosity, and lowest mean temperatures, between 650o and 800o Celsius (1202o and 1472o Fahrenheit). Which magma type has the highest silica content quizlet? RHYOLITIC magma contains more than 65%