Relations between coal petrology and gas content in the Upper Newlands Seam, Central Queensland, Australia
International Journal of Coal Geology
By: R. Walker, M. Glikson, and Maria Mastalerz
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Abstract
The Upper Newlands Seam in the northern Bowen Basin, Queensland Australia consists of six benches (A-F) that have different petrographic assemblages. Benches C and E contain relatively abundant inertodetrinite and mineral matter, as well as anomalously high reflectance values; these characteristics support a largely allochthonous, detrital origin for the C and E benches. Fractures and cleats in the seam show a consistent orientation of northeast-southwest for face cleats, and a wide range of orientations for fractures. Cleat systems are well developed in bright bands, with poor continuity in the dull coal. Both maceral content and cleat character are suggested to influence gas drainage in the upper Newlands Seam. A pronounced positive correlation between vitrinite abundance and gas desorption data suggests more efficient drainage from benches with abundant vitrinite. Conversely, inertinite-rich benches are suggested to have less efficient drainage, and possibly retain gas within pore spaces, which could increase the outburst potential of the coal. ?? 2001 Elsevier Science B.V. All rights reserved.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Relations between coal petrology and gas content in the Upper Newlands Seam, Central Queensland, Australia |
| Series title | International Journal of Coal Geology |
| DOI | 10.1016/S0166-5162(01)00015-5 |
| Volume | 46 |
| Issue | 2-4 |
| Year Published | 2001 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | International Journal of Coal Geology |
| First page | 83 |
| Last page | 92 |
| Google Analytic Metrics | Metrics page |