Back after an hospitalization and leaving alcohol, fortunately for my health. I will be quiet.
I realized we have a lot of unsanswered questions. I made a review and four of them were easy to me, a graduated, to answer.
The point I have seen at stackoverflow of this site is for people consultating questions directly from google searcher.
So I wonder, if me, not working on geology, could answer four of them, wouldn't you need to copy what I did, search for unasnwered questions on the inbox and solve it for students falling on the site?
Thanks in advance.