Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 4 of 4 for “"Stratigraphic--Pennsylvanian"”.
-
Paleozoology of cores from the Tyler Formation (Pennsylvanian) in North Dakota, U.S.A.
… from. North .America and the first Pennsylvanian genus recognized in the family.</p> <p>The Tyler Formation was determined to be of Pennsylvanian (Morrowan, Atokan, and Deamoinesian) age based on the previously reported ranges of contained taxa. Four faunal communities are recognized …
-
The stratigraphy and economic potential of Permo-Pennsylvanian strata in southwestern North Dakota
<p>This study of the Fermo-Pennsylvanian Minnelusa Group in North Dakota was designed to clarify the stratigraphy, illustrate association of depositional environments, and to relate the geologic history and economic potential of these strata.</p> <p>The Minnelusa Group is defined here to include …
-
Depositional environments and sandstone diagenesis in the Tyler Formation (Pennsylvanian), southwestern North Dakota
<p>The Tyler Formation, of Early Pennsylvanian age, in southwestern North Dakota may be divided into upper and lower units, reflecting both a change in lithology and depositional environments. The lower unit is dominated by varicolored, noncalcareous shales and mudstones, siltstones, thin coal …
-
Depositional environments and sandstone diagenesis in the Tyler Formation (Pennsylvanian), western North Dakota
… environments of the Tyler Formation (Pennsylvanian) in northwestern North Dakota. Ninety sandstone thin-sections were described and twenty-nine sandstone samples were analyzed by scanning electron microscope/X-ray microanalysis techniques to characterize sandstone diagenesis.</p> …