Gneiss rock that is foliated and dark in color with bandings measuring up to 0.2cm, and the light bandings measuring up to 2cm. Minerals located within the dark bandings consists of Biotite (40%)…
The Austin Glen formation, which may be found at the Johnson Iorio Memorial Park, encompasses an abundance of clastic sedimentary rocks. More specifically, thin black shale and thick graywacke compose this formation. The thin black shale may be described as fine grained and its color derives from lack of oxidation. This indicates the rock formed in deep ocean conditions. The shale layers are thin, and are approximately two to three centimeters wide. On the other hand, the graywacke shale, which is about fifteen centimeters, is thicker than the black shale. The graywacke is a sandstone and is coarse grained. The black shale and graywacke alternate between layers due to turbidite deposits. In other words, the larger grains are deposited…
Sedimentary rocks can be layered with sandstone, limestone, and shale: The oldest are on the bottom…
Record your answer to Lab Exercise, Step 2, Question 12. How long ago was the…
How old are the rock formations in the area where you live and attend college or university? How can you find out the answer to this question?…
The world works in mysterious ways. This class has determines that people must be able to adapt to environmental changes if they are to survive. The inability to adapt has proven to be the collapse of a particular society time and time again. This essay traces the rise of Cahokia and Chaco Canyon and the developments of each culture to each cultures end.…
Author Amanda Rose has taken it upon herself to bring to light the horrific experiences of modern day immigrant’s flight to freedom through the Sonoran Desert. In addition to addressing the immigrant’s plight, she calls into question the immigration process or lack thereof, the United States legislative broken immigration policy, religious leaders and their roles, US Border Patrol and US citizens. Her intent is to open up a dialogue on US immigration policies and educate the American public on the devastating consequences of a hapless built dividing wall between two countries which are felt not only by the immigrants but by the people that live in and around the border. Rose illustrates the conflicts that everyday Americans citizens living on the border face in trying to help and solve border issues with their personal solutions. Do they work? Are they…
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.…
They even have a tour and they got the park ranger guided tour. They even have back country camping spots that people who like to explore even more at night. The visitors can only walk around the rim or they can go to the floor of the canyon, but when go down on the canyon floor you could see the different layers in the Little Grand Canyon. The Little Grand Canyon even has a book that has the names of the different types of soil. But what really made the Little Grand Canyon so special that the soil was deposited all the sediment. But the ocean was the one who deposited of the different types of soils. The Little Grand Canyons has 43 different types of sands. Before the Little Grand Canyons top soil use to be soft and very sandy. When the Little Grand Canyon first started forming it had started off as small little ditches. But every time it rained the the little ditches started growing deeper and then they started to get…
The basins were formed during the Late Cretaceous to Early Eocene Laramide orogeny, while there is an intermittent Cambrian through present day sedimentation in the basin. The Eocene rocks are filled with different energy minerals such as shale, coal, and uranium. Other minerals that could be found in the basin include, trona, zerolites, clay, placer gold, and phosphate. An excess amount of fossil fauna and flora can also be found in this basin. These rocks make up many…
I feel that the federal government should make Providence Canyon a national park. There are many reasons at why I feel this way. For one it has been in the Coastal Plains for a very long time. It is also an historic land mark many people visit. There are many more reasons at why I think the federal government should make Providence Canyon a national park.…
The Great Smoky Mountains landform is mostly sedimentary rocks that were formed by the accumulation of sand, clay, silt, sand, gravel, and minor amounts of calcium carbonate in flat-lying layers. According to The Great Smoky Mountain’s website, about 545 million years ago the sediments were formed and large amounts of those sediments were washed down into lowland basins from adjacent highlands. The colliding between the edge of the North American tectonic plate and the African tectonic was a huge cause of the creation of The Great Smoky Mountain landform. It was discovered that incredibly long and active geologic events were found in the rocks of the smoky mountains. There was a specific…
Situated north of Grand Canyon National Park, the Glen Canyon Dam serves a multitude of purposes: it controls the distribution of sediment and water, generates $50 to $100 million worth of hydroelectricity, maintains a cold-water trout fishery, and allows for recreational activities in Lake Powell (NRC 1). However, it has also incurred damages to the surrounding environment, which holds cultural significance for the indigenous tribes. In 1988, former Secretary of the Interior Manuel Lujan initiated the Glen Canyon Dam Environmental Impact Studies (EIS) to examine the downstream impact of dam operations. The USBR was first to join the EIS, followed by the National Park Service and state agencies (Austin and Drye 288). However, tribal involvement…
The author and his colleagues specifically chose to focus on 375 million year old rocks in their search for fossils because this was the time frame that provided fish that would be useful to study from. The 385 million year old rocks provided fish that look too similar to the ones we have now and the 365 million year old rocks have fossils that don’t resemble fish. The 375 million year old rocks, however, provide fossils that show the transition between fish and land living animals. Sedimentary rocks are the type of rock that preserves the fossils. Limestone, siltstone, shale, and sandstone are examples of this. The reason why these rocks are the best at preservation is because they are formed by a process that includes the movement of lakes, rivers, and seas. A rock in a body of water has the potential to fossilize because after the gradual compression on the layers in the body of water forming, chemical processes are still happening.…
4. a. If specimens 3-C and 3-D came from the same rock bed, the most precise age of the rock would be lower Ordovician. This is because the specimen in 3-C, Phyllograptus, lived from the lower to middle Ordovician period while the specimen in 3-D, Dictyonema, lived from the Cambrian to the Carbinferous periods. In order for the specimen to be fossilized the rock could not have formed yet and therefore the rock must have formed after the Phyllograptus came into existence.…