Landforms Australia’s major landforms Mountains Many of Australia’s mountain ranges are the result of folding or faulting – for example the Flinders ranges and the Stirling Ranges. Fold Mountains are formed when one plate slides down under another .Some rocks are forced down while others are forced upwards and bent into wave-like forms. Fault Mountains are formed when layers of rock are fractured and one section moves down and another section moves up. Until about 600 million years ago‚ the area
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notoriously recognized volcanic eruptions known to man to date. As our text states‚ “this famous volcano erupted in the year 79 AD‚ ejecting a huge cauliflower-shaped cloud of ash and debris that rapidly settled to the Earth (Strahler 436).” After doing some outside research on this magnificent volcanic landform‚ I found quite a few things: “Mount Vesuvius is located in Italy‚ near the areas of the Tyrrhenian Sea and the capital of Italy. The volcano also buried two major cities ("Volcanic Eruptions: Mount
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cool Magma that cools slowly underground = intrusive rock Magma that cools quickly (outer) = extrusive or fine-grained C. Volcanic Products 1. Lava Flows Relatively low in gas content‚ magma erupting effusively at Earths surface Surface of lava flow may have ropy-texture called pahoehoes Rubble-y flow top consisting of broken lava fragments is called a’a 2. Volcanic Glass - Magma erupts and cools so quickly that crystallization does not occur - Solidifies into a glass - Massive‚ Dark
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Geomorphology is the scientific study of landforms and the processes that shape them. Geomorphologists seek to understand why landscapes look the way they do‚ to understand landform history and dynamics and to predict changes through a combination of field observations‚ physical experiments and numerical modeling. Geomorphology is practiced within physical geography‚ geology‚ geodesy‚ engineering geology‚ archaeology and geotechnical engineering‚ this broad base of interest contributes to many research
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in shaping Mars’ topography. From terrestrial analogs‚ we can begin to explain the processes that occur on Mars. Due to the similarities of outflow channels‚ valley network and gullies to its terrestrial counterparts‚ we have suspected that these landforms are carved by water. Further evidence of water on Mars are evapourite deposits and fan deposits found near valley networks. However‚ there are major
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the realm of science. History of Early Geology Catastrophism (James Ussher‚ mid 1600s) - He interpreted that the Earth was created at 4004 B.C. Subsequent workers then developed the notion of catastrophism‚ which held that the the Earth’s landforms were formed over very short periods of time. Uniformitarianism (James Hutton‚ late 1700s) - He proposed that the same processes that are at work today were at work in the past. Summarized by “The present is the key to the past.” Hutton recognized
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in the snow at it’s basen. Mount St. Helens erupted on May 18‚1980‚ The blast destroyed the top of the mountain and lowered it 1‚300 feet‚ It is currently at 8‚400 feet tall. Thousands of trees were blasted flat on the ground from the force.The volcanic ash cloud drifted east across the U.S.A. in 3 days. 2. Melted snow and Ice mixed with ash and rock created lahars a destructive mudflow on the slopes of a volcano
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Geography Study Notes for Exam Landforms * Formation of Canada * Step 1: hot volcanoes were located where the North American Canadian area is located. * Step 2: erosion eroded away the tops of the volcanoes making them shorter * Step 3: more erosion literally combined the volcanoes into one mass of rocky land * Step 4: the mass of land is now a hard smooth plate‚ the Canadian Shield * Step 5: the Atlantic plate crashed into the east side of Canada and the area
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Deep Magma Body Beneath the Summit and Rift Zones of Kilauea Volcano Kilauea is one of the world’s most active volcanoes. The frequent and gentle eruptions provide a perfect place for volcanic studies. It is believed all the activity is due to magma from a hot spot nearby. The magma fills up in a reservoir two kilometers below the surface until a certain point at which it either explodes out the top‚ or it moves laterally forming dikes. These dikes‚ filled with solidified lava‚ shift leading to
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Exploration and Age Dating (slides 16-19) 3. Transform Boundary (San Andreas Fault‚ J. Tuzo Wilson) (slide 21) Faults (slides 22-24) and Folds (slide 25) Plate movement over Geologic Time (slides 26-29) Creation and change of Landforms (slides 30-33) Standard 8-3.7 Volcanic eruptions (Mt. St. Helens) (slide 32) Mountain building events (Appalachian vs. Himalayas) (slide 33) Tectonics and the Ocean Floor (slide 34) Standard 5-3.2 Continental margins (slide 35) Passive (slide 36) Active (slide 37)
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