This type of stress field is common in Appalachian coal fields, where there is high topographic relief and deeply incised valleys. The terms U-shaped and V-shaped are descriptive terms of geography to characterize the form of valleys. At these places, a number of tributaries having their own points of origin at higher levels, join the main stream. Stream channels have four different channel patterns, the shapes they show when viewed from above or on a map.The curviness of a channel is measured by its sinuosity, which is the ratio between the length of the thalweg and the distance downstream along the stream valley.Straight channels are linear or nearly so, with a sinuosity of nearly 1. The process of stream erosion to create a valley tends to concentrate horizontal stresses beneath the valley axis. changingearth. This page is about physical geology - particularly about valleys. (In everyday English, we also refer to large streams as rivers and medium-sized ones as creeks or brooks.) Stream valley floors are underlain by deposits of alluvium, defined as sediment (mud, sand, and gravel) laid down by flowing water. The bed erosion of the main stream being greater than those of the tributaries, these tributaries merge with the main stream valley. Often, they take the easiest path, occupying the low V-shaped valleys once carved by rivers. Most valleys on earth are the product of streams. Stream Valley DRAFT. Search. Particles of clay, silt, and fine sand are small enough to be suspended in flowing water. Outwash, deposit of sand and gravel carried by running water from the melting ice of a glacier and laid down in stratified deposits. A terrace results from any hydrological or climatic shift that causes renewed downcutting. By eroding sediment from uplifted areas and creating landforms made of deposited sediment in lower areas, streams shape the earth’s surface more than glaciers do, more than waves on a beach do, and far more than wind does. A) deepen into a bigger and bigger canyon, like the Grand Canyon B) become steeper and discharge increases in the streams C) become narrower but with a lower gradient, entrenching meanders D) become broader and lower gradient ... Two general types of stream valleys. a year ago. 3. The geology of California is highly complex, with numerous mountain ranges, substantial faulting and tectonic activity, rich natural resources and a history of both ancient and comparatively recent intense geological activity. Geology Expert. Geography. It is not about identifying rocks and minerals. Aug 27, 2014 - V-Shaped Stream Valley | An example of a typical V-shaped valley with a stream. Valley glaciers carve U-shaped valleys, as opposed to the V-shaped valleys carved by rivers. Wide valleys. Playfair’s Law describes the behavior of almost every stream very well, but there are some streams that are confined to valleys that predate them. 12) Over time as erosion lowers the landscape a river valley will typically _____. Played 2 times. A) a stream valley, deepened by glacial erosion, that floods as sea levels rise B) a glacier-cut valley that is dammed by an end moraine and a large lake is formed C) a large, kettle-pocked morraine left as an island when sea level rises following melting of the ice STUDY. Edit. Magnetism, Terrestrial-California-Owens Valley. Calcareous Geology Streams: Calcareous geology (limestone and dolomite) is common in valleys across southern Pennsylvania. stream valleys evolve over time through downcutting, graded streams, lateral erosion, headward erosion, terraces, and insides meanders. The streams erode actively while at their higher levels near the places where they originated. ENVIRONMENTAL GEOLOGY Module 3 - Rivers and Flooding by Annie Watkins. It also makes them longer by eating farther and farther into the uplands where they begin. Streams sculpt and shape the earth’s surface by eroding, transporting, and depositing sediment. I. Kane, Martin Francis 1928-joint author. Knowing a lot more about geology doesn't really help much. 48 terms. Whitney (14,494 ft.) and Lone Pine (~3,700 ft.), a horizontal distance of only about 13 miles. II. The rock ridge is moving to the right and blocking the stream. Geology-California-Owens Valley. 4th - 6th grade. Aug 27, 2014 - V-Shaped Stream Valley | figures youthful stage downcutting narrow valleys 0. 418 CHAPTER 14 Streams and Floods: The Geology of Running Water the term stream for any body of running water that flows along a channel, an elongate depression or trough. Owens Valley Geology Owens Valley is a deep north-south trending basin lying between the Sierra Nevada on the west and the White-Inyo Mountains on the east. Geology Chapter 6. In geology, a valley or dale is a depression that is longer than it is wide. Stream erosion digs them deeper and wider. Note: The word stream is used for everything from a small creek to huge river. The topographic area adjacent to a stream in a valley with little or no slope is called a floodplain. Learn vocabulary, terms, and more with ... in this set (135) Sea level falls or land rises. The largest particles (sand and gravel) tend to accumulate within the channel itself. The cycle of erosion has some influence on the nature of a stream, but there are several other factors that are important. Narrow valleys. Stream Profile; ... Meandering channels are typically located in flat or nearly-flat valleys or plains. 81% average accuracy. The part of a river that flows into a lake, reservoir or ocean. Madison_Metherd. Geology - Geologic time. Start studying Geology Test 3. 32 terms. Edit. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Knowing a little geology is relevant to placer mining and prospecting for gold in BC. by changingearth. The youthful streams have high sediment loads, and when they flow into the lower-gradient glacial valleys where the velocity is no longer high enough to carry all of the sediment, ____braided____ stream patterns develop, characterized by a series of narrow channels separated by gravel bars (Figure 14.22). Geology Chapter 1: Introduction. After reading this chapter, completing the exercises within it, and answering the questions at the end, you should be able to: Explain the hydrological cycle and its relevance to streams and what residence time means in … They busily modify those valleys in the direction Playfair’s Law predicts, but they have not yet reached the point of full responsibility for the valley’s shape. An outwash may attain a thickness of 100 m (328 feet) at the edge of a glacier, although the thickness is usually much less; it may also extend many kilometres in ... Geology Lab Final- Sedimentary rocks. River terrace, bench or step that extends along the side of a valley and represents a former level of the valley floor. Feb 25, 2016 - V-Shaped Stream Valley | figures youthful stage downcutting narrow valleys 13 terms. The valley’s maximum topographic relief is about 10,800 feet between Mt. 2 times. In the ACC study area, it is also found in sections of … GEOLOGY OF THE BASSETT VALLEY AREA By Gary N. Meyer January 23, 1996 Minnesota Geological Survey 2642 University Avenue St.Paul,Minnesota 55114-1057 (612627-4780 Open-File Report 96-3 ... which allowed meltwater streams and mud slides to carry more debris into the valley. Log in Sign up. Streams erode dirt and rocks, transport the sediment, and redeposit it in new locations, shaping the earth’s surface into a system of stream valleys. Streams flow downhill due to the force of gravity. V-shaped Downcutting toward base level Features often include rapids and waterfalls. Earth Geology Erosion Valley and Stream Erosion Valley and Stream Erosion. Create. Template:Other uses A meander, in general, is a bend in a sinuous watercourse or river. Streams have a major role in geology. Rivers. Stream Valley DRAFT. The world's premier escarpments can be found in Africa's famous Great Rift Valley, but Abert Rim may be North America's finest example of an escarpment. Log in Sign up. The higher the hill, the more gravitational energy there is to drive the stream. Downcutting, also called erosional downcutting, downward erosion or vertical erosion is a geological process by hydraulic action that deepens the channel of a stream or valley by removing material from the stream's bed or the valley's floor. The speed of downcutting depends on the stream's base level, the lowest point to which the stream can erode. 2. Great Valley and Susquehanna Lowland physio-graphic sections (Figure 9-2; Appendix B). 13.4 Stream Types Stream channels can be straight or curved, deep and slow, or rapid and choked with coarse sediments. Chapter 13 Streams and Floods Learning Objectives. The stress field formed beneath stream valleys is called “valley-unloading” stress. Save. Start studying Geology Chapter 6. A meander is formed when the moving water in a stream erodes the outer banks and widens its valley and the inner part of the river has less energy and deposits what it is carrying. Physical Geology – 2nd Edition. It is produced by a stream or river swinging from side to side as it flows across its floodplain or shifts its channel within a valley. During periods when Earth’s climate cools, glaciers form and begin to flow downslope. Play this game to review Geology. A meander is one of a series of regular sinuous curves, bends, loops, turns, or windings in the channel of a river, stream, or other watercourse. 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