| Description |
viii, 55 leaves : illustrations, map, photographs ; 28 cm |
| Summary |
"A textural analysis was made of the heavy oil-bearing sandstones in the Middle Pennsylvanian (Desmoinesian) Warner and Bluejacket formations of mid-western Missouri in order to determine and compare their depositional environments. Grains of the Bluejacket sandstones are smaller and more rounded than grains of the Warner sandstones. The Bluejacket sandstone is also better sorted than the Warner sandstone. The Bluejacket sandstone is thin-bedded; the Warner is mostly massive-bedded. These differences in bedding between the two formations have affected distribution of oil in the area of study. Both the Bluejacket and Warner sandstones are better sorted than the Warrensburg sandstones; the Warrensburg sandstones are more highly skewed than the Warner and Bluejacket sandstones. The cross-bedded character of the Warner and Bluejacket sandstones, the well rounded nature of the sands of the Riverton and Drywood formations, and the broken shell debris of the overlying Seville Limestone represent a high energy depositional environment which is unfavorable for oil formations. The black shale of the Riverton Formation, on the other hand, appears to have formed in a low energy reducing environment"--Abstract, leaf iv. |
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