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Gallery Exhibits ISM Springfield Exhibits Changes Changes Online Objects Introduction Geologic Record
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Introduction

1. Geologic... 2. Human Record 3. welcome.jpg 4. Plants on...

Geologic Record

Rocks tell a story of environmental change. Scientists can study the rock cycle to discover how environmental conditions change over time. They use fossils to determine the age of rock layers.

Date: 09/01/2005
Size: 12 items
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banded iron

banded iron

Date: 09/01/2005
Views: 627
basalt

basalt

Date: 09/01/2005
Views: 466
devonian corals

devonian corals

Heliphyllum halli

Date: 09/01/2005
Views: 543
orbicular granite

orbicular granite

Date: 09/01/2005
Views: 825
marble

marble

Date: 09/01/2005
Views: 540
nautiloid cephalopod

nautiloid cephalopod

Date: 09/01/2005
Views: 604
opalized wood

opalized wood

Date: 09/01/2005
Views: 1144
petrified wood

petrified wood

Date: 09/01/2005
Views: 628
shale

shale

Date: 09/01/2005
Views: 537
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