Weller, J. Marvin 1899-

Preliminary geological map of parts of the Alto Pass, Jonesboro, and Thebes Quadrangles, Union, Alexander, and Jackson counties. By J. Marvin Weller and George E. Ekblaw. Revised in part from map by T. E. Savage. Explanation and stratigraphic summary by J. Marvin Weller. Printed by authority of the state of Illinois. - Urbana, Ill., 1940. - 26 p. : illus., fold. map (in pocket) ; 25 cm.

At head of title: State of Illinois ... Department of registration and education ... Division of the State geological survey ...

Bibliographical foot-notes.

gs 41000012


Geology--Illinois.

QE106.A6 / W4

551.70977399