Asked in Geology, Earth Sciences, Planet Earth
How did scientist identify different layers of the earth?
At the surface the layers can be seen and mapped directly. in the body of the earth near the surface drilling is possible to determine the layers but as one goes deeper still one relies on seismic information and modeling. ...
How are the layers of rocks used to determine the relative ages of fossils?
if it is closer to the surface then it is a newer fossil but it if it is deeper in the ground then it is a older fossil if it has over ten layers then it is a older fossil but if it has nine or less it is a newer one. ...
Asked in Oceanography
Why are the deeper layers of the ocean colder than the surface?
because less and less, and eventually no sunlight penetrates down to those levels beyond a certain depth. ...
Asked in Science, Geology, Earth Sciences
What is the oldest layer of rock called?
The basement is a term sometimes used, and Craton is another used in a continental context. The Principle of Superposition has it that in a given formation, the top layers are the youngest, and the deeper layers the oldest. ...
Asked in Geology
In layers of undisturbed sedimentary rock the oldest rocks are on the?
Factors such as wind, ice, and warder contribute to sedimentary build up. As this occurs older layers of sedimentary rock are driven lower while newer layers replace them closer to the surface. ...
Asked in Fossils
Why are older fossils found deeper than younger fossils?
The deeper ones were deposited first. The geologic law of superposition states that, in undisturbed strata, newer layers will be deposited over older layers; thus, in a core sample containing fossils, those samples nearest the surface will be newer in age than those beneath them. builds up like a stack of photos ...
Asked in Oceans and Seas
What upwelling of water from deepest layers of the ocean is the wind induced?
While not always blowing in the same direction, on average, global winds drag on the water's surface, causing it to move and build up in the direction that the wind is blowing. The coriolis effect causes these wind driven currents to form gyres. Differential drag driven from the surface layers to a depth of about 100m causes the formation of Ekman spirals, the effect of which is to cause the deeper layers to flow in the opposite direction to the surface. However, the...
Asked in Integumentary System (skin)
What layers of the skin are damaged from blisters?
The most superficial layers are damaged and filled with fluid. Some can be deeper but none go into the dermis. ...