Regional insights into the sedimentary organisation of the Walloon Subgroup, Surat Basin, Queensland
| Autor: | Daren Shields, Joan Esterle |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
geography
geography.geographical_feature_category Drainage basin Fluvial 06 humanities and the arts Structural basin 010502 geochemistry & geophysics 0603 philosophy ethics and religion 01 natural sciences Alluvial plain Sedimentary depositional environment Paleontology Drainage system (geomorphology) 060302 philosophy Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences Sedimentary rock Alluvium Geology 0105 earth and related environmental sciences |
| Zdroj: | Australian Journal of Earth Sciences. 62:949-967 |
| ISSN: | 1440-0952 0812-0099 |
| DOI: | 10.1080/08120099.2015.1127287 |
| Popis: | Despite more than a decade of intensive coal seam gas exploration and development in the Surat Basin, fundamental aspects surrounding the sedimentary organisation of the Walloon Subgroup remain unresolved. While generally agreed to have been deposited on a waterlogged alluvial plain, contradictory paleogeographic models describe the Walloon Subgroup as an internally draining fluvio-lacustrine system or, alternatively, as a southeast-prograding distributive trunk drainage system. The former invokes a radially organised fluvial catchment feeding a basin depocentre, suggesting that rivers within the study area flowed from east to west. In contrast, a prograding trunk drainage system assumes an axial system flowing southeastward towards a distant paleocoastline. Without a unifying conceptual model describing the organisation of the Jurassic depositional system, predictions about the distribution of alluvial subenvironments within the Surat Basin are difficult. This study tests previous hypotheses surrounding ... |
| Databáze: | OpenAIRE |
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