Acircular to elliptical structure developed by upward arching of the central strata is a(n)

A dome

Explanation:

A dome is a circular and upward arching geologic structure. Domes are usually formed when an intrusive body pushes up a sedimentary layer. This forces the central part to push up and arch upward. Domes can also be formed during an uplifting process on the earth.

Domes are geological structures of important to exploration geologists. They can form good reserve for salts.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.