4. The right portion of Figure 1 describes general characteristics of the ocean bottom in coastal areas that are tectonically passive (not near a plate boundary). The left portion of the figure generalizes tectonically active coastal areas. Tectonically active regions, typically associated with convergent plate boundaries, experience relatively frequent earthquakes and/or volcanic activity. You examined the locations of plate boundaries in Investigation 2A. Convergent plate boundaries are more closely associated with the [(west)(east)] coasts of the Americas.…
Pacific Ring of Fire: Ocean-girdling zone of crustal instability, volcanism, and earthquakes resulting from the tectonic activity along plate boundaries in the region.…
When the plates move apart, molten material from under the crust moves up to replace the separating crust, resulting in sea floor spreading.…
Alejandro de la Fuente is writing an argument on slavery with different point of view, narrating a debate based on the Law in Latin America. The different prespectives are from Tannenbaum who is well known as a big influence during slavery, Christopher Schmidt-Nowara and Maria Elena Diaz. The author started with a confession about what he thinks of the work that this people have done and explaining their position and point of view. Slave opportunites such as slave codes, immigration and education, were part of this debate. To fiish the main claim of his article, the author gave an example of how slaves who claim their priorities gain a little of victory making an impact in the administration of justice, in this case, the local justice. Even…
The Juan De Fuca tectonic plate is found on the west coast of North America. It is next to the North American plate, and according to America’s Tectonics, the Juan de Fuca plate is getting subducted under it. This plate is made of oceanic crust, but it is also basaltic in some areas. It was named after the pilot and sailor, Juan de Fuca, an explorer from Europe in the 1600s. The Juan de Fuca plate has a divergent boundary in the Juan de Fuca ridge.…
This theory was shown to be maybe correct when the mid-Atlantic ridge was discovered and a similar feature was discovered in the Pacific Ocean. After investigating it was suggested that sea floor spreading was occurring. Evidence for this was from alternating polarity of the rocks that form the ocean crust. Sea floor spreading implies that the Earth’s crust must be getting bigger. As we know this isn’t the case then the plates must be being destroyed somewhere to accommodate the increase in their size at mid oceanic ridges. Evidence was found with the discovery of huge oceanic trenches where large areas of ocean floor were being pulled downwards.…
Plate Tectonics – major Plate Tectonic principles; What are the 3 plate boundaries and their driving mechanisms? Where are trenches?... What are hot spots? What is our plate boundary here in SD? In which direction are we moving?…
The significance of tectonic movements directly impacts Denali through the subduction process of the Pacific Plate underneath the North American Plate which contains Alaska’s mainland. Where these two meet, the Pacific Plate subducts beneath due to oceanic plates having a higher density. Because of past plate collisions, terranes are carried by the Pacific Plate and become accreted together with the North American Plate to form suture zones. These zones are weaker due to the fact that the terranes are broken remnants of continental collisions.…
Cultures are the roots that allow a person to remain grounded and stable, providing a group identity while allowing them to flower into an individual. But what happens when mixtures of opposing cultures come in conflict with imposing societal standards? What form will the culture take? In her book Borderlands/ La Frontera, Gloria Anzaldua uses poetic prose to relate her many years of anger from trying to integrate the clashing morals of her Mexican, American, and Indian cultures. Anzaldua ultimately concludes that for people caught in this clash, decolonization from both Mexican and American society, in order to create a new “borderland” culture, it is a productive and positive step toward psychological health.…
Chaco Canyon is located in northwestern New Mexico. Around 700 they started building rectangular houses above the ground. There was higher rainfall and higher groundwater levels and this caused an increase in population. What was so remarkable about this period was the Chaco phenomenon, which is the construction of fourteen Great houses in Chaco Canyon. These houses were multistory, and made from stone-and-timber pueblos. One of the houses, known as Pueblo Bonito, had more than six hundred rooms, forty ritual enclosures and it was as high as five stories. Large caches of rich ceremonial artifacts have been discovered and so it is believed that it served as ceremonial functions.…
Dr. George Pararas-Carayannis, one of the nation's foremost authorities on earthquakes and tsunamis, states "The Pacific tectonic plate movement caused the crust of southern Alaska to be compressed and warped, with some areas along the coast being depressed while other areas inland are being uplifted. At time intervals ranging from tens to hundreds of years, this compression is relieved by the sudden motions of large portions of the coastal portion of Alaska moving back in a southeastern direction over the subducting Pacific plate." In short, the Pacific plate was being pushed under the North American plate.…
5. What kind of plate boundary exists between the Pacific plate and the North American plate?…
The Aztec geography was very different than other cultures. The Aztecs settled in a central Mexican valley, almost everything that they did was related to their environment. Before the Aztecs settled on the Mexican valley, they were nomads. They traveled from place to place never settling until they found their capital, Tenochtitlan, which is now modern day Mexico city.…
The Cascade mountains lie along the western coast of the United States. This area is one subjected to frequent earth movements and has a long history of volcanic activity. The mountains have formed as a result of seismic activity. The American coast is part of the North American Plate; the Pacific Ocean to the west overlies the Juan de Fuca plate. The Juan de Fuca plate is being subducted below the North American plate by processes explained by the theory of Plate Tectonics. As the descending Juan de Fuca plate is subjected to increasing pressure it becomes hotter and begins to partially melt. The molten rock, called magma begins to rise towards the surface. When it reaches the surface it erupts and a volcano is formed. Mt St.Helens is the youngest of the volcanoes in the region, being a mere 2,500 years old, but the area has…
Plate tectonics have played a major role in the history of the Earth. All seven continents are where they are today due to the movement of plate tectonics. These seven continents were one big supercontinent called “Pangea” about 200 million years ago before breaking apart. The three different types of plate boundaries are convergent, divergent, and transform. These plate boundaries form due to the earth’s outer shell called the lithosphere having multiple plates moving around each other within the earth’s surface, allowing them to collide, separate, or slide past each other.…