Question
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
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
Answers
GPT-4o mini
The phrase that describes a sill is "is a hardened magma intrusion." A sill is a geological feature formed when magma intrudes between existing rock layers and then solidifies.