The effects of volcanic ash on the maceral and chemical composition of the C coal bed, Emery Coal Field, Utah
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Abstract
Volcanic ash which fell in the peat swamp that formed the Upper Cretaceous C coal bed (Ferron Sandstone Member of the Mancos Shale, Utah) produced semi-impermeable layers that caused the ponding of surface waters. Coal samples from directly above tonsteins (altered volcanic ash partings) are enriched in desmocollinite, telinite, and detrocollinite, as a result of poorly drained swamp conditions; coal samples from directly below tonsteins are enriched in semifusinite, inertodetrinite, and fusinite, as a result of well-drained conditions. Leaching of the volcanic ash or the incorporation of volcanic ash in peat provided a source for many elements (including Zr, Nb, Th, and Ce) that are enriched in coal samples taken from directly above and below tonsteins.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The effects of volcanic ash on the maceral and chemical composition of the C coal bed, Emery Coal Field, Utah |
| Series title | Organic Geochemistry |
| DOI | 10.1016/0146-6380(89)90059-4 |
| Volume | 14 |
| Issue | 3 |
| Year Published | 1989 |
| Language | English |
| Publisher | Elsevier |
| Description | 17 p. |
| First page | 315 |
| Last page | 331 |
| Country | United States |
| State | Utah |
| Other Geospatial | Emery Coal Field |