Contributions to Geology volume 17, number 1

Spring 1979

Geometry and origin of deformational structures in the Precambrian metamorphic rocks of the Hill City area, Black Hills, South Dakota 
B. G. Woodland

Silurian continental margin in northern Nevada and northwestern Utah 
Peter M. Sheehan

Vertebrate fauna of the Laramie Formation (Maestrichtian), Weld County, Colorado 
K. Carpenter

K-Ar age for the Fowkes Formation (middle Eocene) of southwestern Wyoming 
M. E. Nelson

Description of a large trionychid turtle shell from the Eocene Bridger Formation of Wyoming 
E. S. Gaffney

Angiosperms from the late Tertiary Keller local fauna of Ellis County, Kansas 
J. R. Thomasson

Aspects of continental crustal structure and growth; targets for scientific deep drilling 
Scott B. Smithson

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