New Western Md. map could mark turn in geology research

The last statewide map of Maryland geology, published in 1968, is out of print. Online versions of it are marked with a disclaimer that it's too imprecise for anything but "historical and illustrative purposes." But a push to drill for Marcellus shale could help bring it into the 21st century.

By Scott Dance, The Baltimore Sun

January 25, 2013