Grafton Quadrangle

Bedrock Geology | Surficial Geology

Bedrock Geology

IGQ Grafton-BG 7.5

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Title: Bedrock Geology Map, Grafton Quadrangle, (Illinois Portion), Jersey and Calhoun Counties, Illinois
Authors: F. Brett Denny and Joseph A. Devera
Description: 33" × 43" map sheet; includes legend, descriptive text, stratigraphic column, photograph, and cross section
Year: 2002; originally STATEMAP 1997
Series ID: IGQ Grafton-BG
File size: 5.1 mb
Paper: $10.50
 

Surficial Geology

IGQ Grafton-SG 7.5

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Title: Surficial Geology Map, Grafton Quadrangle, (Illinois Portion) Jersey and Calhoun Counties, Illinois
Author: David A. Grimley
Description: 32" × 36" single map sheet; includes legend, descriptive text, photographs (4) and topographic profiles (2)
Year: 1999
Series ID: IGQ Grafton-SG
File size: 29.9 mb
Paper: $10.50

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Updated 11/03/2009 JKH

ILLINOIS STATE GEOLOGICAL SURVEY
E. Donald McKay, III, Interim Director

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