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Transcript of Erosion
Journey to the Center of the Earth
On June 15, 1994 " a 15-story-deep sinkhole opened up in an 80 million-ton pile of phosphogypsum waste -- known as a gypsum stack -- at IMC-Agrico's New Wales plant. The hole could be as big as 2 million cubic feet, enough to swallow 400 railroad boxcars. Local wags call it Disney World's newest attraction -- "Journey to the Center of the Earth" -- but there's nothing amusing about it. The cave-in dumped 4 million to 6 million cubic feet of toxic and radioactive gypsum and waste water into the Floridan aquifer, which provides 90 percent of the state's drinking water. The company has voluntarily spent $ 6.8 million to plug the sinkhole and control the spread of contaminants in the ground water." - US News & World Report, June 12, 1995
Agrico Gypsum Stack, Florida
Great Blue Hole, Belize
Chemical and Physical Weathering
Erosion and Deposition
Water and Gravity
The 10 longest rivers in the world are:
1. Nile - 4,135 miles long.
2. Amazon - 3,980 miles long.
3. Yangtze - 3,917 miles long.
4. Mississippi, Missouri - 3,902 miles long.
5. Yenisei - 3,445 miles long.
6. Yellow - 3,398 miles long.
7. Ob, Irtysh - 3,364 miles long.
8. Congo - 2,922 miles long.
9. Amur - 2,763 miles long.
10. Lena - 2,736 miles long.
geology : a natural feature (such as a mountain or valley) of the Earth's surface
Water Deposition and Erosion
Apalachicola River Delta, Florida
Ganges Delta, Bangladesh
World's Largest Delta
The Ganges Delta (also known as the Ganges–Brahmaputra Delta, the Sunderbans Delta, or the Bengal Delta) is a river delta in the South Asia region of Bengal, consisting of Bangladesh and the state of West Bengal, India. It is the world's largest delta, and empties into the Bay of Bengal. It is also one of the most fertile regions in the world, thus earning the nickname The Green Delta
Clearwater Beach, Clearwater- St. Petersberg
Giants Causeway, Northern Ireland, United Kingdom
Water Erosion and Deposition
The Legend of the Giant's Causway
According to legend, the columns are the remains of a causeway built by a giant. The story goes that the Irish giant Fionn mac Cumhaill (Finn MacCool) was challenged to a fight by the Scottish giant Benandonner. Fionn accepted the challenge and built the causeway across the North Channel so that the two giants could meet. In one version of the story, Fionn defeats Benandonner. In another, Fionn hides from Benandonner when he realises that his foe is much bigger than him. Fionn's wife, Úna, disguises Fionn as a baby and tucks him in a cradle. When Benandonner sees the size of the 'baby', he reckons that its father, Fionn, must be a giant among giants. He flees back to Scotland in fright, destroying the causeway behind him so that Fionn could not follow.Across the sea, there are identical basalt columns (a part of the same ancient lava flow) at Fingal's Cave on the Scottish isle of Staffa, and it is possible that the story was influenced by this.
Chemical and Physical Weathering
Erosion/ Deposition Water, Ice, Gravity
Caspian Sea Facts
The Caspian Sea, located in western Asia on the eastern edges of Europe, is the largest lake on the planet.
History records that it's called a sea because the Romans found it salty, especially in the southern reaches, and the name stuck.
The measured surface area is 371,000 sq km (143,244 sq mi), and the maximum depth is at 1025 m (3,363 ft).
The sea is bordered by the countries of Azerbaijan, Russia, Kazakhstan, Turkmenistan and Iran.
Oil and natural gas production platforms are replete along the edges of the sea. In addition, large quantities of sturgeon live in its waters, and the caviar produced from their eggs is a valuable commodity.
Fresh water flows into the sea via the Volga River and Ural River in the north, however, the sea remains somewhat salty, central and south.
Lake Byrd Lutz, Florida (my backyard)
Caspian Sea, Azerbaijan, Iran, Kazakhstan, Russia, and Turkmenistan
Water and Ice Erosion
Grand Canyon Facts
The Grand Canyon
•Is a chasm 277 miles long and up to 18 miles wide
•Below Yavapai point is 2,400 feet above sea level, about 4,500 feet below the South Rim and 5,400 feet below the North Rim for an average depth of about one mile
•Took 3-6 million years to form; erosion continues to alter its contours
•Includes approximately 70 species of mammals, 250 species of birds, 25 types of reptiles and five species of amphibians
•Was formed by the Colorado River, which flows west through the canyon and averages about 300 feet width, 100 feet in depth and flows at an average speed of four miles per hour
Grand Canyon, Arizona
Apalachicola River Delta
Durdle Door is a natural limestone sea arch on the Jurassic Coast near Lulworth in Dorset, England. It is privately owned by the Welds, a family who own 12,000 acres (50 km2) in Dorset in the name of the Lulworth Estate. It is open to the public.
Durdle Door, England
Alluvial Fans on Mars
Alluvial fans exist on other planets. The presence of alluvial fans on Mars gives evidence for the existence of liquid water on the planet billions of years ago.
Okavango River, Angola
The Great Rift Valley is a name given in the late 19th century by British explorer John Walter Gregory to the continuous geographic trench, approximately 6,000 kilometres (3,700 mi) in length, that runs from northern Syria to central Mozambique in South East Africa. The name continues in some usages, although it is today considered geologically imprecise as it combines features that are today regarded as separate, although related, rift and fault systems. Today, the term is most often used to refer to the valley of the East African Rift, the divergent plate boundary which extends from the Afar Triple Junction southward across eastern Africa, and is in the process of splitting the African Plate into two new separate plates. Geologists generally refer to these new plates as the Nubian Plate and the Somali Plate.
Great Rift Valley, northern Syria to central Mozambique
Water and Ice Erosion
A hoodoo (also called a tent rock, fairy chimney, and earth pyramid) is a tall, thin spire of rock that protrudes from the bottom of an arid drainage basin or badland. Hoodoos, which can range from 5-150 feet tall (1.5-45 metres), typically consist of relatively soft rock topped by harder, less easily eroded stone that protects each column from the elements. They generally form within sedimentary rock and volcanic rock formations.
Great Blue Hole
Approx. The Nile River
The Ganges Delta
Great Rift Valley