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GEOLOGICAL HISTORY OF MATTHIESSEN STATE PARK

by TRACI ABRAHAM

Introduction

Erosional forces at work on the environment

• groundwater
• joints
• stream erosion and groundwater

Ancient environment

• sand dunes
• glaciers

Rock units

• St. Peter Sandstone
• Dolomite exposure
• Megabreccia bed

LaSalle Anticline

• faulting
• rock exposures on axis

Bibliography

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copyright © 1998 Traci Abraham (includes all photos)