The"Great Unconformity" And Other Essays About Rocks and Fossils
There is a great blog called "Written in Stone,
which has a number of great and well-illustrated
essays about geology. This includes a series
about the "Great Unconformity."
The Great Unconformity of the Grand Canyon
and the Late Proterozoic-Cambrian Time Interval:
Part I - Defining It
http://written-in-stone-seen-through-my-lens.blogspot.com/2012/01/great-unconformity-of-grand-canyon-part.html
The Great Unconformity and the Late Proterozoic-
Cambrian Time Interval: Part II - The Rifting of
Rodinia and the "Snowball Earth" Glaciations
That Followed
http://written-in-stone-seen-through-my-lens.blogspot.com/2012/02/great-unconformity-of-grand-canyon-part.html
The Great Unconformity at Baker's Bridge:
Part III - Regional Geological and Global
Bio-Evolutionary Significance
http://written-in-stone-seen-through-my-lens.blogspot.com/search/label/Great%20Unconformity
Yours,
Paul H.
