Date Original

1902

Description

This map shows the geological makeup of the Chalk Region of southwestern Arkansas.

Biographical/Historical Note

During the Paleozoic Era, all of the area that is now Arkansas lay under the ocean. The central and southern areas were under a deeper part of the ocean than the northern part, and so had less marine life but more sand and clay. The remains of marine organisms eventually became limestone, sand became sandstone, silt turned into siltstone, and clay became shale. In the Mesozoic Era, which the Cretaceous Period is part of, southern Arkansas was still underneath the ocean, but the ocean had become shallow. The remains of marine organisms from this period formed chalk, marl, and calcareous clay. Studying the geology of the state helps us understand the forces that have shaped Arkansas over its long history.

Physical Description

Map, 19.75" x 13"

Keywords

Maps; Geology; Mining geology

Contributor

U.S Geological Survey

Geographical Area

Southwestern Arkansas

Language

English

Identifier

Map2263

Resource Type

Image

Collection

Map collection

Publisher

Arkansas State Archives

Contributing Entity

Arkansas State Archives

Recommended Citation

Geological Map of the Chalk Region of Southwestern Arkansas, Map2263, Map collection, Arkansas State Archives, Little Rock, Arkansas.

Rights

Use and reproduction of images held by the Arkansas State Archives without prior written permission is prohibited. For information on reproducing images held by the Arkansas State Archives, please call 501-682-6901 or email at state.archives@arkansas.gov.

Disciplines

United States History

Preview

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Additional Content

Maps collection inventory.

Keywords

Maps; Geology; Mining geology

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