Value of GRE Writing Score

Dear friends

I’m interested to know about the number that get in GRE writing have how much value getting admission in the field of Geology.

Any one have an idea about the evaluation by the number that obtain in writing section. I’m afraid about the number I will get in writing portion.
But other portion I can score more than 1200.

Thank you in advance.

i guess geology will require some kind of high score in the verbal, isn’t it? the writing is generally needed to be as high as possible. over 4.0 is fine