The Oregon Coast Range is composed of accreted oceanic sediments. The oldest rocks were formed during the Paleocene to the middle of the Eocene era. The rocks are gently folded and have a slight westward dip. As we walked out onto the Jetty‚ you could see how the waves came in at a slight angle rather than directly at the coast. Most of the rocks (particularly the smaller hand held size rocks) were jagged and triangular looking. This told me that these rocks came from a relatively close proximity
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and many other useful articles.They keep our environment clean and fresh.They use up the carbon dioxide during photosynthesis and give out oxygen.They give us shade throughout the year‚and attract rain clouds.The roots of trees also prevent soil erosion. Forests are very important in preserving the balance of the eco-system. They provide sanctuary to wild animals.Unfortunately‚man has been indiscriminately cutting down forests.This has resulted in a considerable decrease in rainfall in some places
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Every year about 30 million people and 10 million hectares are affected and the property lost may run into thousands of corers of rupees. The annual loss of top soil is estimated 6000 million tonnes; its value in terms of money is enormous. Soil erosion also causes siltation of lakes and rivers. Felling of trees and destruction of forests cause imbalance in forests ecosystem. That reflects in the loss of varieties of flora and fauna. Forest loss is a threat to wildlife survival. In Bihar‚ Madhya
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External Forces One and Two Weathering- is the process that changes solid rocks into sediments. There are four types of weathering water‚ wind‚ glaciers‚ and gravity Water is responsible for most weathering Wind moves sand-sized particles of rock through the air Glaciers move all sizes of sediment Gravity moves broken pieces of rock downslope Physical Weathering- involves the breaking down of rocks into situ without any change in the composition Freeze Thaw- when water seeps into the cracks and
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Topics to cover in our story book: clean water – don’t use river water‚ water from puddles‚ etc! It IS contaminated and may contain cholera-causing bacteria that will make you sick. Don’t use charcoal whenever you can‚ use LP gas if possible! Why? Remember this tree… with the swing… you could climb it‚ sit under it for shade‚ play on it‚ hide beneath it’s roots‚ etc. But charcoal is made from the destroying this trees… and all these trees. When too many trees are cut down‚ animals (which ones
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pressure‚ this heavy rain fall cause severe flooding and mudslides that result in loss of life‚ an example of this was in central Ecuador and Peru in 1997 when it suffered rainfall 10 times the average rainfall‚ this caused extensive flooding and erosion as well as mudslides‚ there was loss of life and destruction of property as the country wasn’t able to cope with the severe weather. On the other side of the pacific in Australia and Indonesia the cold weather reduces evaporation‚ which causes very
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As part of a five-state region affected by severe drought and soil erosion‚ the "Dust Bowl" as it was called was result of several factors. Cyclical drought and farming of marginally productive acreage was exacerbated by a lack of soil conservation methods. Because the disaster lasted throughout the 1930’s‚ the lives of every Plains resident and expectations of farming the region changed forever. The settlement and development of the Southern Plains came relatively late. Not recognizing the problems
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Beach erosion longstanding challenge for southeastern NC There is a major environmental concern in the southeastern region North Carolina; it is beach erosion. However do not worry‚ the article states “The good news is that we do have alternatives to help control erosion‚ but the bad news is that these alternatives can also have negative consequences.”. A method that is able to help control erosion is beach nourishment‚ although it is not a cure for beach erosion‚ but rather a treatment to help
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wind removed the finer material * Loess-deposits of windblown silt‚ lacking visible layers‚ generally light yellow‚ and capable of maintaining a nearly vertical cliff * Dune- a hill or ridge of wind deposited sand 7.3 outline * Wind Erosion: wind erodes land surfaces in two ways: deflation and abrasion. * Wind Deposits: The wind can create landforms when it deposits its sediments‚ especially in deserts and along coasts. Both layers of loess and sand dunes are landscape features deposited
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The soils ability to grab and hold important nutrient ions until they are absorbed by the roots is just as important as the supply of those initial ions. Soil erosion is the most damaging force against top soil. Soil erosion happens anytime soil is bared and exposed to the elements. Wind and water have a dramatic effect on soil erosion because both events have a tendency to remove the humus particles and carry them away from the soil. The removal can be a slow and gradual process when soil is gradually
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