Wednesday, July 30, 2014

Erratics and erratic posting

Bit heavy work load and life so posting has been limited. Just finished a very challenging report that greatly deviates from a number of previous geologic interpretations of a certain location.

Did have some field work at a site underlain by very silty hard glacial drift.

Not much water infiltration once the forest duff topsoil is removed at this site.
DT once pointed out that all those little cobbles embedded in the silty clay glacial drift are glacial erratics. So I should not have been surprised when I spotted this rather large erratic in the forest.

This particularly large erratic was likely plucked off of the green schist exposures on the mountain side to the north of where I was working. 

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