Suchergebnisse - Roberts, Albert Eugene 1921-

Cretaceous and early Tertiary depositional and tectonic history of the Livingston area, southwestern Montana: a study of the character of the sedimentary rocks - their texture, variation in composition, age assignments, regional correlation, and tectonic implications

Big Snowy and Amsden Groups and the Mississippian-Pennsylvanian boundary in Montana: a study of the Upper Mississippian and Pennsylvanian sedimentary formations with special emphasis on their regional correlation, variation in lithology, and age assignments

Geology and coal resources of the Livingston coal field Gallatin and Park Counties Montana: a study of the Eagle Sandstone (Cretaceous), with special emphasis on its regional correlation, variation in lithology, and coal resources

Stratigraphy of Madison Group near Livingston, Montana, and discussion of karst and solution-breccia features