Saturday, August 28, 2010

Welcome Letter For New Church Member

Canaima National Park (Part 2) geological






"God Bless the Earth Sciences!

Geology God Bless!

God is science and Science is in God

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Canaima National Park (Part 2)

GEOLOGICAL ORIGIN



Hello and Welcome, as always, SOMETHING NEW IN TOURISM .



Tourism, as we know, is a social, economic and cultural, that is moving people from one place to another outside of their place of residence, various reasons, such as different are the needs of man. Because of these needs, tourism takes classifications that meet these needs, social and scientific tourism tourism are the modalities try here.



As there TOURISM GEOGRAPHY, studying the geomorphology of a tourist area, it is proposed in SOMETHING NEW IN GEOLOGY TOURIST TOURISM the , not is more than the study of Earth's crust, geologic history of a particular area of \u200b\u200binterest, geography, topography, erosion, minerals, rocks and other areas of knowledge, hydrology, biology and botany. course this is useful bibliographic reference tool for students and tour guides in our region.



The geology of the Canaima National Park is a large topic, but we will try here as essential to get an idea of \u200b\u200btheir training.



Canaima is located within a large natural region in southern Venezuela, just south of the Rio Orinoco, we know as GUIANA VENEZUELA made by States Amazonas, Bolivar and part Delta Amacuro, and, in turn, belongs to the Guiana Shield Solid or that, we also share with Brazil and the Guianas (Guyana, Suriname and French Guyana) and has about half a million kilometers of extension our country.




Guayana



However, the Orinoco River completely surrounds the northern part of the Venezuelan Guayana and between Los Llanos Venezuela and some of the Colombian Llanos. The Orinoco we can considered the northern boundary and the Amazon River in Brazil, as the southern limit, noting that both basins (Orinoco-Amazon), bathe this region and river basin Casiquiare slips into the Amazon River, but part of the Venezuelan Guayana.



is worth noting that Guyana is the oldest geological region of our country, it began its transformation before the rest of our territory, since the early Cenozoic, 65 million years ago, what is known today as Venezuelan territory was entirely on land recently emerged or on a continental platform, due to the movement of tectonic plates that have shaped the current appearance of the continents.



At the end of the era, namely the Pliocene, 7 to 3 million years ago, Venezuela had achieved its present form. During this period 65 million years that it lasted this era (Cenozoic), there were several geological events that affected the actual appearance of the table mountains in Canaima.



Cordillera Andina is a mountain range that extends almost parallel to the Pacific Ocean from near Panama to Cape Horn at the southernmost tip of Tierra del Fuego in southern Chile. this mountain, one of the largest in the world, has 7 240 km long and 241 kilometers wide.



mention this, to understand why Venezuela was submerged when the Guayana region began to take shape in tepuyes, valleys, rivers and jungle.





elevation and folding of sedimentary rocks, which are rocks that make up this mountain, originated in the Cretaceous, when the tectonic plates of the Ocean South Pacific and began a process known as SUBDUCTION , in Geology call the sinking of a lithospheric plate oceanic nature under an adjacent plate which usually is of a continental.



These incredible tectonic forces generated by this collision (subduction), produced a number of active volcanoes due to friction that, at extremely high temperatures, melted the underlying rock, and this pressure exerted on the molten rock, looking for an escape route through cracks, thus forming volcanoes.



Thus, they formed the Andes, and this increase caused the Venezuelan territory submerged began to emerge on the horizon, bringing with allochthonous materials (materials originating in other sites) .



One wall of the Great Mole Geological Auyantepuy call.


(Photo: Alexander Lamb)

La semana próxima continuamos nuestro viaje por diferentes eras geológicas hasta nuestros días, para comprender la importancia que tiene nuestra región Guayana, especialmente Canaima y los tepuyes, testigos mudos de la evolución geológica de nuestro país y del mundo.