About the Author

Alex McBirney is an emeritus professor at the University of Oregon where he taught geology for more than thirty years. A graduate of West Point and the University of California at Berkeley, he worked for many years in the volcanic regions of Central America, the Galapagos Islands, Tahiti, and the Cascades. In 1970, he began a detailed study of Skaergaard Intrusion of East Greenland and has continued to work on it since his retirement in 1995. Alex lives in Eugene, Oregon, together with his wife Carmen, his children, and a growing number of grandchildren.