Forest physiography; physiography of the United States and principles of soils in relation to forestry . uadrangle, U. S. Geol. Surv.) They are distinct from the more common type of drumlin in that theyare due to erosion, while the ordinary drumlin is a product of upbuild-ing and of shaping. Roc drumlins occur in much smaller numbers thanordinary drumlins, but are sometimes found in the same general field,as in central New York and northern Wisconsin and Michigan. Thelast-named occurrence has been described by Russell.^ Three general regions of great drumlin development have been iden-tified i
Forest physiography; physiography of the United States and principles of soils in relation to forestry . uadrangle, U. S. Geol. Surv.) They are distinct from the more common type of drumlin in that theyare due to erosion, while the ordinary drumlin is a product of upbuild-ing and of shaping. Roc drumlins occur in much smaller numbers thanordinary drumlins, but are sometimes found in the same general field,as in central New York and northern Wisconsin and Michigan. Thelast-named occurrence has been described by Russell.^ Three general regions of great drumlin development have been iden-tified in the United States: (a) the New England area, including southernNew Hampshire, where about 700 drumlins have been mapped, Massa-chusetts with about 1800, and Connecticut with an unnumbered amount;(b) the Michigan area, which includes eastern Wisconsin and adjacent » H. L. Fairchild, Drumlins of Central-Western New York, Bull. New York State Ill, 1907, p. 393. » I. C. Russell, Rapt. Mich. State Geologist, 1906. 7i8 FOREST PHYSIOGRAPHY PART OF CHERRY CREEK QUADRANGLE PART OF OVID QUADRANGLE. PART OF CLYDE QUADRANGLE PART OF CANANDAIGUA QUADRANGLE
Size: 1807px × 1382px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
