Question

Which are all the subspecialties of Earth Science?

Answer 1

Hard to list them all as they continue to grow all the time!

Explanation:

Check out this website for a fairly complete list of current geoscience specialities:

http://www.bucknell.edu/arts-and-sciences-college-of/academic-departments/geology-and-environmental-geosciences/what-is-a-geoscientist.html

This site also provides a bit more information on what a career looks like in geosciences, job prospects, where you would work, etc.