What cities are on the Hayward fault?
GeologyNearly 3 million people live directly on top of the active Hayward Fault. This includes the communities of Oakland, San Leandro, Hayward, Fremont, Richmond, Castro Valley, Union City and Berkeley. Where does the Hayward Fault start and end? The Hayward fault runs through the East Bay hills from San Jose through Richmond. The Hayward Fault
Why was Siccar point so important?
Geology and GeographyIn 1788, James Hutton first discovered Siccar Point, and understood its significance. It is by far the most spectacular of several unconformities that he discovered in Scotland, and very important in helping Hutton to explain his ideas about the processes of the Earth. Why is Siccar Point important? Siccar Point is famous as the site
What is the theory of plate tectonics?
GeologyWhat is the theory of plate tectonics explain? The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet. Where
What is the average speed of a tsunami?
GeologySince the average depth of the Pacific ocean is 4000 m (14,000 feet) , tsunami wave speed will average about 200 m/s or over 700 km/h (500 mph). How fast is a tsunami? In the deep ocean, a tsunami can move as fast as a jet plane, over 500 mph, and its wavelength, the distance
What is volcanic debris?
Geology and GeographyBGS Research — Volcanoes. Debris flows, also known as lahars when they involve volcanic material, are mixtures of sediments and water that flow down the slopes in response to gravity. What does volcanic debris mean? Moving masses of rock, soil and snow that occur when the flank of a mountain or volcano collapses and slides
What are large crystals?
GeologyAn igneous rock with large crystals probably indicates that the rock formed deep within the Earth, since it is typically warmer deep inside the Earth than near the surface. These are called intrusive rocks, and they have a phaneritic texture (from the Greek “phanerous” meaning visible). What is the name of the large crystals? Examples
What is the legend of Popocatepetl and Iztaccihuatl?
GeologyIn Aztec mythology, Iztaccíhuatl was a princess who fell in love with one of her father’s warriors, Popocatépetl. The emperor sent Popocatépetl to war in Oaxaca, promising him Iztaccíhuatl as his wife when he returned (which Iztaccíhuatl’s father presumed he would not). What is the legend of Popocatepetl & Iztaccíhuatl a love story? Popocatepetl and
What is cross bedding in geology?
GeologyIn geology, cross-bedding, also known as cross-stratification, is layering within a stratum and at an angle to the main bedding plane. The sedimentary structures which result are roughly horizontal units composed of inclined layers. What are the main types of cross-bedding? The three types of cross-bedding under this classification are simple, planar, and trough. The
Is there a fault line in Virginia?
GeologyMost earthquakes in Virginia are not associated with a known fault, but occur within three distinct seismic zones: the Eastern Tennessee Seismic Zone (ETSZ) includes Lee County in far southwestern Virginia; the Giles County Seismic Zone (GCSZ) extends through the New River Valley; and the Central Virginia Seismic Zone … Is Virginia near a fault
What type of plate boundary is Eyjafjallajokull?
GeologyIceland rests along the Mid Atlantic Ridge, a divergent tectonic plate boundary at the bottom of the Atlantic Ocean. It’s where the North American and Eurasian plates meet, and runs for 10,000 km (16,000 miles) along the ocean floor. What type of plate boundary is Eyjafjallajökull located on? Abstract. The Eyjafjallajökull volcano, one of the