on April 16, 2022
Why is Hawaii in the middle of the Pacific plate?
GeologyIn areas where the plates come together, sometimes volcanoes will form. Volcanoes can also form in the middle of a plate, where magma rises upward until it erupts on the seafloor, at what is called a “hot spot.” The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific
on April 16, 2022
Why is a quick burial helpful In the fossilization process?
GeologyThe rapid burial of remains beneath a blanket of sediment is critical to the process of fossilization because burial separates the remains from the biological and physical processes that would otherwise destroy them. Why is rapid burial important in the fossilization process because? Rapid burial is important in the fossilization process because: It protect a
on April 16, 2022
How did scientists discover seafloor spreading?
GeologyIn the early 1960s, dating of ocean-core samples showed that the ocean floor was younger at the Mid-Atlantic Ridge but progressively older in either direction, confirming the reality of seafloor spreading. How did they discover seafloor spreading? The age, density, and thickness of oceanic crust increases with distance from the mid-ocean ridge. The magnetism of
on April 16, 2022
What language is Popocatepetl?
GeologyPopocatépetl, (Nahuatl: “Smoking Mountain”) volcano on the border of the states of México and Puebla, central Mexico. What does the word Popocatépetl mean? noun. a volcano in SE central Mexico, southeast of Mexico City. What does Popocatépetl mean in Aztec? the Smoking Mountain Popocatépetl and Iztaccíhuatl refers to the volcanoes Popocatépetl (“the Smoking Mountain“) and
on April 16, 2022
What is the difference between Aphanitic and Phaneritic textures?
GeologyAPHANITIC TEXTURE – Igneous rocks that form on the earth’s surface have very fine-grained texture because the crystals are too small to see without magnification. PHANERITIC TEXTURE – Igneous rocks with large, visible crystals because the rock formed slowly in an underground magma chamber. What makes a phaneritic rock different from aphanitic rock? Phaneritic rocks
on April 16, 2022
What are scour marks?
GeologyScour marks are negative relief features produced as a result of erosion of a sediment surface by the current flowing over it (Reineck and Singh 1980), formed via the impingement of usually sediment-laden eddies on beds (Dzulynsky and Saunders 1962). What do scour marks look like? Scour marks and flute casts Flute casts can be
on April 16, 2022
Which volcano was formed by the subduction of the Cocos plate under the Caribbean plate?
GeologyThe Cocos Plate in the Pacific Ocean is subducted beneath the Caribbean Plate, just off the western coast of Central America. This subduction forms the volcanoes of Guatemala, El Salvador, Nicaragua, and Costa Rica, also known as the Central America Volcanic Arc. Does the Cocos Plate have volcanoes? Plate another small plate, the Cocos Plate,
on April 16, 2022
What is a volcanic arc quizlet?
GeologyVolcanic Arc. A curved chain of volcanoes in the overriding tectonic plate of a subduction zone. Volcanic arcs form as the result of rising magma formed by the melting of the downgoing plate. They are curved because of the curvature of the Earth. What is a volcanic arc? A volcanic arc is a chain of
on April 16, 2022
Where is the Ridge and Valley region of Georgia located?
GeologyShaped by a collision of continents approximately 250 million years ago and the centuries of erosion since, the Valley and Ridge region of Georgia is located north of the Piedmont, between the Blue Ridge and the Appalachian Plateau. What is the Ridge and Valley region known for? Iron and Zinc are also produced in the
on April 16, 2022
Where are rock falls most common?
GeologyRockfall is common in areas of the world with steep rock slopes and cliffs. Commonly, these are mountainous or plateau areas, whether in coastal areas or among isolated rock formations. What is rockfall in geography? A rockfall is a type of fast-moving landslide that happens when rock or earth falls, bounces, or rolls from a