Geography, 19.10.2019 12:10 mobslayer88

The youngest rocks are found near the center of an upwarping known as a dome a downwarping known as a basin uplifted structures called horsts fold-and-thrust mountain belts

Answers: 2

Show answers

Answers

Answer from: libbybacon7

Downwarping known as a basin

Explanation:

Under the Principle of Original Horizontality, sediments are always deposited in horizontal beds. Any bed that is found to be tilted has undergone a geological transformation. The Principle of Superposition states that the younger beds are always found overlaying older beds. In a horizontal sequence, the youngest rocks will always be at the top.

Upwarpings, or domes, are uplifts of the ground caused by tectonic deformation. Because domes are spherical or ellipsoidal protrusions on the Earth's surface, the younger rocks are said to be on the periphery, whereas the oldest rocks are in the centre.

In a downwarping, or basin, the deformation of the ground produces a concavity. Whereas in an upwarping we have one point of uplift, in a downwarping we have two points of uplifting (in a tectonic deformation, product of subduction such as the Chilean Central Valley), or one point pushing down because of isostacy (such as the Hawaiian Through). In these basins, the youngest rocks stay near the centre of the concavity (or inside).

Horsts occur when two main faults push a fragment of the crust upwards, and the adjacent fragments downwards (these two fragments are then called grabens). In a flat undeformed ground, the horst keeps the youngest rocks on top. If the fault system develops in either a dome or a basin, then the position of the older and younger rocks is determined by the position they had after the deformation of the ground.

Finally, in a fold and thrust mountain belt, such as the Pyrenees, the ground is deformed due to the collision of two continental tectonic plates, producing a system of faults, synclines and anticlines. In general, younger rocks remain in the surface, but the new generated system of faults can put older rocks on top of younger ones.

Answer from: Quest

i think it’s c i believe that

Answer from: Quest

Answerweathering;

Another question on Geography

Geography, 22.06.2019 01:30

Consider a population of snowshoe hares in montana. their fur color changes in response to changes in day length. during the long summer days, they have brown fur, but as the days shorten in the fall, their fur turns white in preparation for winter. then as the days get longer in the spring, their fur turns brown again. their fur coloration acts as camouflage from predators. as climate change brings warmer fall temperatures to montana, colder temperatures with snowfall are coming later in the year, and there may be less snowfall overall. as a result, the hares' fur color may be mismatched to the color of their surroundings, making them more visible to predators. which snowshoe hares would have a reproductive advantage in this changing environment? which snowshoe hares would have a reproductive advantage in this changing environment? hares that change color in response to day length, as the current population does hares with a mutation that prevents them from changing color from brown to white hares with a mutation that causes them to change color in response to temperature rather than day length hares with a mutation that prevents them from changing color from white to brown

Answers: 2

Answer

Geography, 22.06.2019 11:30

What is the approximate circumference of the circle shown below? 12.2 cm

Answers: 1

Answer

Geography, 22.06.2019 13:10

Where does oxidative phosphorylation take place

Answers: 2

Answer

Geography, 23.06.2019 02:30

What factors influenced brazil's current and future economic strength?