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At the American coastline, the estimated age is between 1 and 60 million years. Finally, at the borderline with the Philippine and the Australian Plates, the approximated age is somewhere between 160, up to 180, or even 200 million years.
6) the Atlantic Ocean plate is similar to that of the Pacific Ocean in the meaning that its age differs. Just like with the Pacific crust, the Atlantic crust is younger at one border, to grow older towards the middle of the ocean, and even older as it reaches the opposite border.
7) the spatial pattern of the crustal age is consistent with the theory of the plate tectonics, which argues that -- at one point in time (or even at several times) -- the entire lands on the planet were joined together (Rockhounding Arkansas, 1998). The pattern of the crustal age is consistent with this theory as it reveals a similar construction and composition of the borders along the continents, indicating that those regions -- which are now similar -- could once have been part of the same whole.
8-9)...
In the immediate vicinity of the shore, the topographic features would be mild and stable. As the age of the plates increases however, the topographic features would be more abrupt, and this would be explained by the fact that erosions and earthquakes had shaped and reshaped them (Orfano, 2010).
References:
Orfano, F., 2010, Topography of the ocean floor, Bright Hub, http://www.brighthub.com/engineering/civil/articles/63495.aspx last accessed on January 6, 2011
Patchett, P.J., Samson, S.D., 2003, Ages and growth of the continental crust from radiogenic isotopes, the Crust, Vol. 3
1998, Our changing Earth, Rockhounding Arkansas, http://www.rockhoundingar.com/geology/condrift.html last accessed on January 6, 2011
Crustal age, National Geographic Data Center, http://www.ngdc.noaa.gov/mgg/image/WorldCrustalAge.gif last accessed on January 6, 2011
Coastal Animals Sea Turtles (SeaWorld, 2004) From a taxonomy perspective, sea turtles belong to the overall class of reptilia. The order is testudines. The suborder cryptodira also includes fresh water turtles. There are two families of sea turtles. Based on their carapaces, sea turtles are divided into two families: bony -- covered with horny scutes -- turtles and leatherback turtles. There are eight species of sea turtles: green Chelonia mydas, black Chelonia
134). In addition, Russian authorities have also joined with the international community to protect the lake. In this regard, Hudgins adds that, "Increased awareness of such threats to the unique ecology of Lake Baikal has prompted a number of international organizations -- including the Sierra Club and Baikal Watch in the United States -- to join the Russians in their efforts to protect this natural wonder of the world"
An article in the Saturday Evening Post relates the story of a scientific party in a whaling boat on the Bering Sea in the early 20th Century "witnessed an awesome sight when, with mighty roars, fire and smoke and exploded lava shot out of the water, casting ashes and pumice all over" (Hubbard, p. 10). and, Hubbard adds, "Not infrequently huge gas bubbles hurtle upward from the ocean bottom
They are responsible for transporting the heat from tropics to mid-latitudes. On the other hand, speed is said to be lower in the case of eastern currents (e.g. California Current) which transport cold water to the tropics where this is heated and pushed back to the poles by the western streams. Consequently, ocean surface currents help the Sun energy spread from the equator to the poles ((http://science.hq.nasa.gov/oceans/physical/OSC.html). Swells, breaking surf,
Continental tropical (cT) air masses are hot, dry, unstable at low levels and generally stable aloft (upper-level ridge); they originate in northern Mexico. Continental polar (cP) or continental arctic (cA) air masses are cold, dry, and stable originating over northern Canada and Alaska as a result of radiational cooling. (Oklahoma Climatological Survey, 2004)" The greenhouse effect has been in the news for the last several decades especially with the resulting
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