The period of continental collision was one of the Earth’s momentous times. It is a phenomenon of the plate tectonics of Earth that occurs at convergent boundaries. Continental collision is a variation on the fundamental process of subduction Cheap P.J. Hall Jersey , whereby the subduction zone is destroyed, mountains produced, and two continents sutured together. Continental collision is known only from this planet and is an interesting example of how our different crusts, oceanic and continental, behave during subduction. Continental collision is not an instantaneous event Cheap Kolton Miller Jersey , but may take several tens of millions of years before the faulting and folding caused by collision stop. Collision between India and Asia has been going on for about 50 million years already and shows no signs of abating. Collision between East and West Gondwana to form the East African Orogen took about 100 million years from beginning (610 Ma) to end (510 Ma). Collision between Gondwana and Laurasia to form Pangea occurred in a relatively brief interval, about 50 million years long. The collision marked the beginning of our planet.

Twenty million years ago, North and South America were arranged in nearly the same positions as they are today. The big difference being, they were separated by a deep open channel called the Central American Seaway. There was no Panama and no need for a Panama Canal because there was clear sailing from the Atlantic to the Pacific.

But the Earth is a geologically active planet with shifting crustal plates. During the time period between twenty and three million years ago, the Pacific Plate collided with the Caribbean Plate Cheap Reggie Nelson Jersey , pushing magma to the surface to make islands in the sea, and eventually creating a land bridge between the two continents. The movement not only changed the land, it disrupted ocean currents, opened a door to species migrations and probably altered the world’s climate.

When the land bridge closed, equatorial waters could no longer mix. The Atlantic became saltier and the Pacific more dilute Cheap Derek Carr Jersey , creating a gradient that moves water in a giant loop around the globe today. Warm Atlantic water that used to pass through the gap moved northward, becoming the Gulf Stream. Scientists believe these changes created a warmer Europe and contributed to our recent cyclic ice ages.

The land bridge also opened the way for species to cross from one continent to the other. Deer, horses, raccoons, bears and the camel ancestors of llamas moved south across the bridge. Anteaters Cheap Jared Cook Jersey , porcupines, opossums and armadillos moved north.

Unfortunately, many large South America species couldn’t compete with the North American animals and became extinct, changing the ecology of an entire continent. Mineral ore then accumulated deep under the rock. To mining those ores, we need mining equipment such as jaw crusher.

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NEW DELHI Oakland Raiders Jerseys For Sale , May 20 (Xinhua) -- At least four people were killed and 15 others suffered burn injuries on Saturday after a passenger bus caught fire in northern Indian state of Uttar Pradesh, police said.

 

The bus caught fire after ramming into an electric pole, following which a high tension wire fell on it in Banda district, about 197 km south of Lucknow city, the capital of Uttar Pradesh.

 

""Today a passenger caught fire at Jaspura area of Banda district after a high tension wire fell on it. The wire snapped as the bus hit the electric pole Raiders Jerseys For Sale ,"" a police official said. ""Four people were burnt alive while 15 others were injured.""

 

Following the incidents locals rushed to the spot to rescue passengers and simultaneously informed police and fire service officials.

 

""The injured were taken in ambulances to the hospital, where the condition of some of them is stated to be critical,"" the official said.

 

Police said the bus was going from Banda to Hamirpur.

 

""The fire was so fierce that it was difficult for the villagers to evacuate the injured passengers from the bus,"" a local resident said. ""The situation aggravated as fire fighters reached the spot bit late.""

 

Preliminary investigations carried out by the police said the mishap took place when the driver lost control of the bus and hit the electric pole.

 

Xi calls for public security forces to be loyal to CPC

 

China, Philippines agree to further improve bilateral ties

 

China Culture and Tourism Festival held in Toronto

 

Objects from Belgravia home of Lord Ballyedmond presented in Sotheby

 

China succeeds in mining combustible ice in South China Sea

 

In pics: Bangkok Seashell Museum

 

In pics: road on cliffs of Taihang Mountain in N China

 

In pics: Dongjiang Lake in C China's Hunan

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MOMBASA Cheap Oakland Raiders Jerseys , Kenya, May 31 (Xinhua) -- Kenyan President UhuruKenyatta on Wednesday launched the passenger train service of the480-km Mombasa-Nairobi Standard Gauge Railway (SGR), paving way forthe nation's endeavor for industrialization and prosperity.

 

Terming it as ""a new chapter"" in the history of Kenya, thepresident said the modern railway will replace the meter gaugerailway that was constructed more than 100 years ago during theBritish colonial rule.

 

""Today we celebrate the laying of one of the key cornerstones toKenya's journey of transformation to an industrial, prosperous andmiddle-income country Cheap Raiders Jerseys ,"" he said ahead of embarking on the inauguraltrip from Mombasa to Nairobi.

 

The launch came one day after the Kenyan leader launched thefirst SGR cargo service between the two cities.

 

Kenyatta said that the SGR was made possible due to the closeSino-Kenya friendship.

 

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