The Geological Society of America
Special Paper 337
Glacial Processes - Past and Present
Proceeding from the Paleoglaciology Symposium, GSA meeting in Madison, USA, 1997
Editors: David M. Mickelson and John W. Attig, Editors

CONTENTS

Introduction
D.M. Mickelson and J.W. Attig

Some glaciological and geological implications of basal ice accretion in overdeepenings
R.B. Alley, J.C. Strasser, D.E. Lawson, E.B. Evenson, and G.J. Larson

Example of the dependence of ice motion on subglacial drainage system evolution: Matanuska Glacier, Alaska
S.L. Ensminger, E.B. Evenson, R.B. Alley, G.J. Larson, D.E. Lawson, and J.C. Strasser

Field evidence for the recognition of glaciohydrologic supercooling
E.B. Evenson, D.E. Lawson, J.C. Strasser, G.J. Larson, R.B. Alley, S.I. Ensminger, and Bill Stevenson

Isotopic composition of vent discharge from the Matanuska Glacier, Alaska: Implications for the origin of basal ice
D.D. Titus, G.J. Larson, J.C. Strasser, D.E. Lawson, E.B. Evenson, and R.B. Alley

Microstructures of glacigenic sediment-flow deposits, Matanuska Glacier, Alaska
M.S. Lachniet, G.J. Larson, J.C. Strasser, D.E. Lawson, E.B. Evenson

A need of three-dimensional analysis of structural elements in glacial deposits for determination of direction of glacier movement
Aleksis Dreimanis

Tunnel channels formed in Wisconsin during the last glaciation
Lee Clayton, J.W. Attig, and D. M. Mickelson

The Spooner Hills, northwest Wisconsin: High-relief hills carved by subglacial meltwater of the Superior Lobe
M.D. Johnson

Origin of the Driftless Area by subglacial drainage--a new hypothesis
Howard Hobbs

Paleoglacier reconstruction and late Pleistocene equilibrium-line altitudes, souther Sawatch Range, Colorado
K.A. Brugger and B.S. Goldstein

Pre-Illinoian glacial geomorphology and dynamics in the central United States west of the Mississippi
J.S. Aber

The Wisconsin Episode glacial landscape of central Illinois: a product of subglacial deformation processes?
W.H. Johnson and A.K. Hansel

A reconstruction of the Green Bay Lobe, Wisconsin, USA, from 26,000 to 13,000 radiocarbon years B.P.
P.M. Colgan

Ice-surface profiles and bed conditions of the Green Bay Lobe from 13.000 to 11,000 C14 years BP
B.J. Socha, P.M. Colgan, and D.M. Mickelson

Ice sliding over weak, fine-grained tills: Dependence of ice interactions on till granulometry
Slawek Tulaczyk

Quaternary glacial deposits and landforms of the north Timan region, Russia--a possible center of local glaciation
A.V. Matoshko

Discussion of the observed assymetrical distribution of landforms of the Scandinavian Ice Sheet
Reet Karukäpp

The role of climate oscillations in determining ice-margin position: hypothesis, examples, and implications
T.V. Lowell and G. H. Denton