This is an anthology of my 39 favorites magazine and newspaper articles.
Available from Purple Mountain Press.
A geological history of the Catskills, mostly covering the Devonian time period, written for the aveage reader. Available from Purple Mountain Press
A history of the Catskill Mountains during the Ice Age, written for the average reader.
This week’s column (Dec. 3rd) is about ripple marks.
There are two types – The first is the asymmetric current ripple, which is shown to the right. One side is shorter and steeper than the other.
Above, top, is a wave ripple which shows symmetrical ripples
