Accretionary Wedge #42: Rocky Eggs
This month AW #42 named "Countertop Geology" by Ian Saginor of the blog Volcanoclast. Have you seen a great countertop out there?
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Hard dolomite cracked a drilling bit!
Our funny crew showing broken carbide bit after a troubles while drilling in a hard dolomite in North Sinai, Egypt in a mission to reach the Nubian aquifer. http://youtu.be/KhTy0UoVa40 Drilling on earth have a lot of problem, I wonder what kind of machines and equipment we need to drill on the Mars in case of exploring for groundwater? :) http://youtu.be/6sk5IuIjr1E