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Essay about climate change in geography
Essay about climate change in geography
Human activities that affect climate change and global warming in geography
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Within the state of Colorado lies a well know national park, which is known for its breathtaking geologic features and history of ancient civilizations. This site of interest is known as Mesa Verde National Park. In the Spanish language, Mesa Verde means green table. This park serves a medium for the protection of the thousands of well-known archeological sites that lie within it. Many of these preserved sites served as a home for its inhabitants, the Ancestral Pueblo people, over a thousand years ago. It is estimated that this was most likely around AD 600 to about 1300. A valuable and vital resource to the people was water. The Cliff House Sandstone found in Mesa Verde served not only as a home for the Ancestral Puebloans, but also …show more content…
The geological arrangement was largely influenced by the Western Interior Seaway, which swept through the continent millions of years ago. It was during this time when frequent alterations in climate caused the waters to surface and withdraw. The Dakota Sandstone deposited within the sedimentary profile of Mesa Verde is in large part due to these events. Soon after the sea reached longer distance westward and the sandy tidal deposits were converted to deep water deposits. Mancos Shale is the name given to represent these deposits, which are comprised of organic material and small particulates. Another interesting fact to note is that this type of sediment consists of fossils. These remains can include prehistoric shell fish, shark teeth, and many other types of organisms. The hills seen at the foundation of the mesa in the Montezuma Valley are comprised of gray …show more content…
Later after the sea finally retreated occurred volcanic activity. Mountains rose through laccoliths, which also resemble volcanoes. These laccoliths differ in that they do not erupt. They shifted layers of rock upward in the shape of a dome. This specific piece of geologic morphology occurred at the end of the Cretaceous time. This marked the beginning of the Laramide Orogeny, which was a well-known period of mountain formation in western North America. The geology, its history, and the presence of past civilizations contribute to much of the significance of Mesa Verde National Park. The interconnectedness of these aspects should also be noted. If not for the weathering processes and changes in sea level this formation would not exist. Without it, the ancient people would not have been able to reside within Mesa Verde. This National Park now serves as a tool to help conserve the remains of these past civilizations as well as to help educate today’s society on the significance behind this astonishing geologic
Yes this feature is the result of erosion and depositional processes however, it is not associated with the current water course. This feature may be the result of a Gilbert type delta that once occupied this area. Gilbert type deltas have three main components; topsets, foresets and bottomsets. Topsets are fluvial sediments (primarily sandur deposits) that were deposited on the subaerial delta surface. Erosive events occurring on the upper forslope can result in downslope channels and chutes. These features are then eroded by either strong currents or by debris flow resulting in these channels and chutes to become filled. Foresets are a combination of sand and gravel facies. The are deposited by gravitational processes on the delta foreslope and the grains tend to become finer and more angular downslope. Bottomsets consist of fine grained silts and clay and are deposited at the foot of the delta front.
Kathryn book Life in the Pueblo is based on excavations that she did at Lizard Man Village (Kamp, 1997). This was a small pueblo located in Arizona which is believed to be inhabited between 11th and 13th century. These ancient excavations were first carried out by United States Forest Service and were parts of Grinnell College field school (Kamp, 1997). The aim of the book was to describe Lizard Man Village and present excavation processes and analysis. Kamp 1997 offers archaeological interpretation of the site in relation to the past understandings. She bring out successfully three narratives. These narratives include ethnographic data in relationship to traditional accounts from Hopi (a place which is believed to be the first resident of Lizard Man) (Kamp, 1997). He also bring out clearly the issue of archaeology as well as fictional account basing it on both ethnography and archaeology.
...e morphed it into the quartzite that is seen surrounding the butte (4). Rocks that undergo this process are called metamorphic rock, which is the same as the rock seen years ago by dinosaurs and other extinct creatures. The quartzite rocks were formerly seafloor sediment that was forced upwards, and then surrounded by lava basalt flows. Once erupted through fissures and floods through out most of the area, lava flow eventually created enough basalt to form a thickness of about 1.8 kilometers (1). All of this basalt flow eventually led to the covering of most mountains, leaving the buttes uncovered. The igneous lava flows and loess is reasons that the Palouse consists of such sprawling hills, and rich soil for farming (2). In result of the lava flows, the Precambrian rock Quartzite was formed. And lastly covered by the glacial loess, which were carried by the wind.
The Mystery of Chaco Canyon introduces viewers to a very complex structure that was built by Ancient Pueblo Indians. Although there is no language to explain the structure’s meaning and purpose, researchers were able to read their architecture as a language. Four themes that were extracted from the structure were, the native’s immense understanding of astronomy, the use for the structure, the level of spirituality that the structure represents, and migration from Chaco Canyon.
The coastal belt of the Franciscan Complex is composed of the youngest and least deformed units and makes up the western quarter of all Franciscan rocks. The rocks of the coastal belt are composed of arkosic sandstones, andesitic graywackes, and quartzofeldspathic graywackes interbedded with radiolarian chert (turbidite deposits) (Blake and Jones, 1981). These sedimentary rocks suggest a depositional environment of deep-sea fan systems with both oceanic and continental provenance. Parts of the belt show evidence of later metamorphism, principally due to subduction. Low-grade blueschist mineral facies are indicated by the presence of minerals such as laumonite and prehnite-pumpellyite (Blake and Jones, 1981). All rock units show evidence of thrust (imbricate) faulting due to the compressional forces of subduction. Ages of the coastal belt run from as little as 40 Ma (Eocene) to as old as 100 Ma (middle Cretaceous).
Approximately three hundred and thirty-four years ago, there took place an uncommon and captivating story of American Indian History. This historical story was called the Pueblo Revolt, and it included the defeat of the dominant European Spaniards. The Spaniards were defeated by an assortment of Native American tribes that were not able to communicate in the same language. The Pueblo Native Americans resided in the area that is now considered northern New Mexico. This area remained combined with the territory of Spain for about eighty-five years. There were Spanish conquistadors guarded the superior area of Rio Grande. They forced Spanish regulations and brutality upon the Pueblo Indians.
Debate started to arise when an archaeologist by the name of Thomas D. Dillehay found artifacts of people existing 14,600 years ago, before Clovis, in Monte Verde, a site in southern Chile. These people slept in hide tents, had access to seafood and potatoes, and shared similar characteristics to other artifacts found in North Ame...
and Metamorphic rocks can be found. There are also a lot of crusted plates, and violent
As a member of the Taos Pueblo I know that tradition and keeping it alive is very important to us. It is for this reason that I feel the need to share what it is like to spend your days in a village of the Taos Pueblo. We are located in New Mexico, about 70 miles north of Santa Fe. One might think that being so close to a city like Santa Fe we would be modernized as a people, but that is not the case. We like to keep our traditions alive.
The Cahuilla were a Native Southern Californian tribe that occupied the Riverside County, Higher Palomar Mountain Region and East Colorado Desert. The tribe was divided into two groups or moieties know as Wildcats or Coyotes. The Cahuilla lived in small clans that varied in population, and together all the separate clans made up a larger political group called a sib ”http://www.aguacaliente.org/content/History%20&%20Culture/.” The tribe was at first considered to be very simple and savage because they were never interacted with. As the Europeans and Spanish Missionaries considered the desert an inhospitable place that was better to avoid because of its lack of food resources. Little did those European and Spanish missionaries know that the land was ripe with food, only if you knew the land and the seasons. The Cahuilla were a very interesting tribe that cared and loved their land and in return the land would provide them with an abundance of food and resources. The Cahuilla had a very simple yet intricate life that involved a seasonal migration in order to gain access to different foods. They relied on different ways of acquiring food which involved both hunting and gathering.
Pueblo Indian. (2002, April). History of the pueblo indians (cont.). Retrieved March 12, 2003, from http://www.puebloindian.com/pueblo_history_003.htm
In the southwestern United States, above northern Arizona, are three mesas. The mesas create the home for the Hopi Indians. The Hopi have a deeply religious, isolated, tribal culture with a unique history.
Petrified Forest National Park is located in the Painted Desert in northeastern Arizona taking up 93,532.57 acres of its land. Before the national park was established, it was founded as a National Monument on December 8, 1906 when President Theodore Roosevelt signed the proclamation. Years later, the Congress passed a bill and established it as a national park on December 9, 1962. Centuries before Petrified Forest National Park was preserved as a national park, the land was preoccupied by the Paleo people. At the onset of the end of the last Ice Age, hunter-gatherers, people who lived by hunting game and only gathering edible plants, roamed the Southwest from 13,500 to 8000 B.C. Although these people enjoy meals consisting of meat and vegetables, they don’t raise livestock and grow crops. During these years of hunting and gathering, the region was cooler with a grassland environment, and people gathered wild plants for food and hunted bison and other large herd of animals. The types of bison these people hunted are now extinct. Nomads used a device called an atlatl to throw their weapons, such as spears and darts, to hunt. By 4000 B.C., during the archaic culture, the climate had changed and became similar to the one of the present. This period of hunting, gathering, and farming had lasted from 8000 to 500 B.C. In contrast to the time of the Paleo people, the climate was warmer, people extended their access to different types of food, and people began to farm and grow their crops. Due to the extinction of animals of the past, people had to expand their source of food, and they had to include many different species of plants and animals into their meals. Two hundred twenty-five million years ago, trees fell and were washe...
Pueblo Indians replaced weapons to bow and arrow and baskets by ceramics, marking the end of the Basketmaker II Era and new beginning of the Basketmaker III. Ceramics were an advance improvement over baskets, and storage units made from Animals, such as major water storage containers used in the region. Year round funds first appear around this Era. The inhabitants of the San Juan Basin expanded considerably. Archeologists clarify after 575 Common Era, there were very few Basketmaker III sites in Mesa Verde but by the beginning 7th century there were many such sites in the mesa. The inhabitants of Mesa Verde c. 675 was somewhere around 1,500
"Sandals woven from yucca fiber were typical footwear of the Mesa Verde people. Yucca fibers were boiled or soaked and then pounded to expose the inner fibers. These fibers were also used to produce rope, snares, mats, baskets, belts, and much more. " from source 2. They made many things from one plant. "Artists and traders-trading with a network of tribes to bring shells such as these from the Gulf of California to wear as ornamental jewelry. Artifacts found in the cliff dwellings offer much evidence of trades, such as Macaw feathers from Central America, turquoise from New Mexico, and copper bells from Mexico. Due to extensive trading as well as local production, many different types of jewelry have been found at Mesa Verde sites." from source 2. They were able to start a vast trading network.