Mudstone that is subjected to extreme heat and pressure over a long period of time will form ___________.?

Question

I need help with this question.

5) Mudstone that is subjected to extreme heat and pressure over a long period of time will form ___________.

A) sedimentary rock

B) metamorphic rock

C) igneous rock

D) weathered rock

Answer 1

It will form a B metamorphic rock. the rocks it forms from a shale, phyllite, schist. depending on the time temp and depth.  It B because meta rocks are changed with temp and depth igneous are from a melt and sedimentary if from weathering of any other rock.

Answer 2

The above answer should read slate, not shale. Slate is the lowest grade metamorphic rock of mudstone origin, while shale is still a sedimentary rock.  Also, gneiss follows schist with increasing temperature and pressure.

But both are correct, the answer is B.

Answer 3

B (extreme heat and pressure)