which phrase describes a sill? fills in valleys and rivers is a hardened magma intrusion cuts vertically…
which phrase describes a sill? fills in valleys and rivers is a hardened magma intrusion cuts vertically through older rock layers is built up by numerous eruptions over thousands of years
Answer
Brief Explanations:
A sill is a type of igneous intrusion. It is a hardened magma intrusion that forms when magma intrudes parallel to existing rock - layers. Filling valleys and rivers is not a characteristic of sills. Cuts vertically through older rock layers describes a dike. Being built up by numerous eruptions over thousands of years describes a volcanic land - form like a volcano or a lava plateau.
Answer:
is a hardened magma intrusion