In Bowen's reaction series, as a magma gradually cools:

a. calcium-rich plagioclase reacts continuously with the magma to become more sodium rich
b. sodium-rich plagioclase reacts continuously with the magma to become more calcium rich
c. biotite reacts discontinuously with the magma to form olivine
d. muscovite reacts discontinuously with the magma to form quartz


a

Environmental & Atmospheric Sciences

You might also like to view...

Which of the following compounds is an amine?

A) aniline B) anisole C) phenol D) toluene

Environmental & Atmospheric Sciences

Compared to Earth's atmosphere, the Martian atmosphere has surface pressures that are ________

A) 50 times those on Earth B) 32.1 times those on Earth C) 1.5 times those on Earth D) 0.1 times those on Earth

Environmental & Atmospheric Sciences

Shale is usually metamorphosed into ________

A) slate B) marble C) gneiss D) basalt E) tufa

Environmental & Atmospheric Sciences

What are the four kinds of mountains? How are they formed?

What will be an ideal response?

Environmental & Atmospheric Sciences