heterogeneous gneiss, and unfoliated granite rocks. A sulture zone in Glacier Bay is the Tarr Inlet sulture zone made up of faulted and deformed rock. There is also evidence of an ancient subduction zone. This was found to be made up of fragmented tectonic plates. Everything under the National Park is nice, but what people see the most are the plants and
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two sites that we visited, but literally everywhere around the world. By understanding the principles of the Wilson Cycle, we are able to unearth details about a location such as what geologic era it belongs to, what type of plate boundary it is, as well as what type of tectonic activity that was required to allow it to form. In essence, everything relates back to the Wilson Cycle, as evidenced in the following pages. Geologic Background: PALEOZOIC: The Paleozoic era was is the earliest of the
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thousands of years ago and there’s no possibility of eruption. Why do volcanoes erupt? The Earth's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle. These plates sometimes move. The friction causes earthquakes and volcanic eruptions near the edges of the plates. The theory that explains this process is called plate tectonics. What are the different types of volcanoes? There are four types of volcanoes: cinder cones, composite volcanoes, shield volcanoes and
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Mercury, the closest planet to the Sun, is a rocky, solid planet and is therefore called a terrestrial planet. It was once volcanic. As such, it... Due to a thin atmosphere, the surface also shows evidence of many impacts, as it has many craters. Temperatures can vary between 90 and 700 Kelvin. Because of the wildly fluctuating conditions caused by these temperatures, and also due to any life-sustaining elements (although there is some evidence of water at the poles), there is almost certainly no
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The surface of Mercury is very similar to that of Earth's moon. It is covered in a fine sand, much like moon dust, and many craters caused by the impact of asteroids and comets, which have left a debris field around many of these craters. Some of the craters are so deep that, despite the scorching heat on Mercury (over 750 degrees Fahrenheit), its deepest craters and crevices contain ice because they are so deep that they never get any direct sunlight. The surface is also marked by a raisin-like
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New Madrid(1811-1812) In the autumn of 1811, the United States was barely 35 years old. The fledgling nation included only 17 states, all east of the Mississippi River, but it boasted a lot of new territory thanks to the Louisiana Purchase of 1803. Neither the buyers nor the sellers knew that the recent addition's basement contained a seismic time bomb nearly ready to go off At around 2:15 a.m. on December 16, 1811, a series of massive earthquake pummeled what is now southeastern Missouri and northeastern
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the earth's tectonic forces are presently trying to create new plates by splitting apart old ones. In simple terms, a rift can be thought of as a fracture in the earth's surface that widens over time, or more technically, as an elongate basin bounded by opposed steeply dipping normal faults. Geologists are still debating exactly how rifting comes about, but the process is so well displayed in East Africa (Ethiopia-Kenya-Uganda-Tanzania) that geologists have attached a name to the new plate-to-be; the
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Causes and Effects of Volcanic Activity at Mt. St. Helens. Iason Kambourelis Student ID: 250743024 Geography 2152F Mark Mosciki 12/08/15 Description of Event In late March 1980, Mount St. Helens began experiencing minor earthquakes, which persisted for months until on May 18 when the famous stratovolcano finally underwent its first violent eruption in over a century. This catastrophic explosion was preceded by many smaller, warning eruptions, and on March 27, highly pressurized steam
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waters from these rivers. One of the newest mountain belts on the planet are the Himalayas. Based on the premise of plate tectonics the Himalayas were formed over 70 million years ago during the Upper Cretaceous period. They are the effect of orogeny (continental collision) down the convergent boundary amid the Eurasion and Indo-Australian plates. Currently the Indo-Australian plate is at constant motion traveling over 65 mm/year, about the subsequent 9 million years it will move approximately under
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confirm that all of those patients were injured in the earthquake. Plate tectonic California San Francisco seems like a city living on the brink of disaster. Its residents know that I lies along the San Andrea’s fault, where the pacific moves north westwards past the North American plate. The two move in the same direction but the pacific plate moves more quickly, this creates friction. This is called a conservative plate boundary. The San Andreas Fault is the fault line between them. It runs
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