Which statements explain reasons why unconformities occur? Check all that apply. Rocks along a fault break and move. Igneous roc
k forms at Earth’s surface. Rocks erode and sediment is deposited. No sediment is deposited over a long time. Igneous rock forms between sedimentary layers
<em>Rocks erode and sediment is deposited, and No sediment is deposited over a long time.</em>
<u>Explanation:</u>
The most common reason for the formation of <em>uncomformity is erosion</em>. The <em>times of formation of the rocks</em> above and below the uncomformity are different when no sediment is deposited over a long time.
The rock above the uncomformity are younger than the rocks below the uncomformity. Types of uncomformity are <em>angular uncomformity, discomformity and non comformity.</em>
In angular discomformity horizontal sedimentary rock layers are formed above sedimentary rock layers that are in tilted position. Discomformity lies between two <em>horizontal sedimentary rock layers</em>. Non comformity lies between<em> sedimentary and igneous rock layers or metamorphic rocks.</em>