| Abstract: | The Point Lookout sandstones are quartz-rich, fine to very-fine grained, and contain moderately variable quantities of potassium feldspar (2 to 20 modal percent) and lithic fragments (9 to 20 modal percent). Locally, sandstone is tightly cemented by carbonate cement; clays are not important as cementing agents, although they significantly reduce permeability of some samples. Pores are small; many are intergranular micropores between crystals of authigenic clay. Depositional environments are highly variable and range from lower shoreface to coastal plain and include minor deltaic environments. The best reservoir characteristics are generally in the upper shoreface sandstones. -from Authors |
| Genre: | Article |
| ProdID: | 70018293 |
| Citation Author: | Keighin, C. W.; Zech, R. S.; Dunbar, R. W. |
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| Citation End Page: | 16 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Mountain Geologist |
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| Citation Number Of Pages: | 12 |
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| Citation Search Results Text: | The Point Lookout Sandstone: a tale of two cores, or petrology, diagenesis, and reservoir properties of Point Lookout Sandstone, Southern Ute Indian Reservation, San Juan Basin, Colorado; 1993; Article; Journal; Mountain Geologist; Keighin, C. W.; Zech, R. S.; Dunbar, R. W. |
| Citation Start Page: | 5 |
| Citation Volume: | 30 |
| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | The Point Lookout Sandstone: a tale of two cores, or petrology, diagenesis, and reservoir properties of Point Lookout Sandstone, Southern Ute Indian Reservation, San Juan Basin, Colorado; 1993; Article; Journal; Mountain Geologist; Keighin, C. W.; Zech, R. S.; Dunbar, R. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1993 00:00 -0600 |
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