What is trace fossil in geology?
GeologyA trace fossil, also known as an ichnofossil ( /ˈɪknoʊfɒsɪl/; from Greek: ἴχνος ikhnos “trace, track”), is a fossil record of biological activity but not the preserved remains of the plant or animal itself. What is meant by a trace fossil? Definition of trace fossil : a fossil (as of a dinosaur footprint) that shows
What is design basis earthquake?
Geologydesign-basis earthquake (DBE): “That earthquake for which the safety systems are designed to remain functional both during and after the event, thus assuring the ability to shut down and maintain a safe configuration.” What is MCE and DBE? The MCE (Maximum Credible Earthquake) is the most severe earthquake effects considered by this standard. The DBE
How did Mount Teide form?
GeologyTeide is not merely the most visited national park in Spain and Europe. It is one of the most spectacular manifestations of volcanic activity on Earth, formed 120,000 years ago after a landslide caused by the eruption of the ancient Las Cañadas volcano. When was Teide formed? 170,000 years ago However, as Teide was formed
Are cinder cone volcanoes common?
GeologyCinder cones are the most common type of volcano in the world. They may look like an idealized depiction of a volcano as they are steep, conical hills that usually have a prominent crater at the top. Are cinder cones The most common volcano? Cinder cones, also known as pyroclastic cones, are the smallest and
How do you calculate the speed of a tsunami?
GeologyTsunami speed can be computed by taking the square root of the product of the acceleration of gravity, which is 32.2 feet (9.8 meters) per second squared, and water depth. In 15,000 feet (4,600 meters) of water, this works out to almost 475 mph (765 km/h). How do you calculate wave speed? Wave speed is
What volcano has the most Lava?
GeologyWhat volcano produces most lava? Shield volcanoes Shield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that
How do Tiltmeters predict volcanoes?
GeologyMeasuring tiny changes in the slope angle or “tilt” of the ground and the shape or “strain” in the earth’s crust are time-tested methods for monitoring volcano deformation caused by moving magma. How can we use tiltmeters and GPS satellites to predict volcanoes? tiltmeters and GPS satellites – these devices monitor any changes in landscape.
Did Puerto Rico have an earthquake today?
GeologyHow strong was the Puerto Rico earthquake today? SAN JUAN, Puerto Rico— A 5.4-magnitude earthquake hit near southern Puerto Rico on Saturday, briefly knocking out power and jolting many from their beds on an island where some people still remain in shelters from previous quakes earlier this year. Was there an earthquake in Puerto Rico
What are the hoodoos in Utah?
GeologyWhat are hoodoos in Utah? The hoodoos we are talking about are tall skinny shafts of rock that protrude from the bottom of arid basins. Hoodoos are most commonly found in the High Plateaus region of the Colorado Plateau and in the Badlands regions of the Northern Great Plains. Why is it called hoodoo? The
What caused the Mount Pinatubo eruption?
GeologyIn March and April 1991, however, molten rock (magma) rising toward the surface from more than 20 miles (32 kilometers) beneath Pinatubo triggered small earthquakes and caused powerful steam explosions that blasted three craters on the north flank of the volcano. What tectonic plates caused the Mt Pinatubo eruption? Mount Pinatubo lies beneath a devastating