The significance of benzo[b]naphtho[d]furans in fluids and source rocks: New indicators of facies type in fluvial-deltaic systems
dc.contributor.author | Cesar, J. | |
dc.contributor.author | Grice, Kliti | |
dc.date.accessioned | 2017-12-10T12:39:07Z | |
dc.date.available | 2017-12-10T12:39:07Z | |
dc.date.created | 2017-12-10T12:20:14Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Cesar, J. and Grice, K. 2017. The significance of benzo[b]naphtho[d]furans in fluids and source rocks: New indicators of facies type in fluvial-deltaic systems. Organic Geochemistry. 113: pp. 175-183. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/59186 | |
dc.identifier.doi | 10.1016/j.orggeochem.2017.08.010 | |
dc.description.abstract |
© 2017 Elsevier Ltd The distributions of benzo[b]naphtho[d] furans (BNFs) in source rocks and fluids (crude oil and condensate) are shown to be useful indicators of facies type in fluvial-deltaic systems from the Dampier sub-Basin, North West Shelf of Australia. The stratigraphy in the Dampier sub-Basin represents a challenging petroleum system where the organic matter is very similar in most of the Triassic-Jurassic sequences. These sections consist of a fluvial-deltaic system with increasing marine influence towards the end of the Jurassic period. Potential applications of BNFs for source rock characterisation as well as fluid – source rock correlations are reported for the first time. The formation of [1,2]BNF seems to be influenced by clay catalysis, and the ratio [2,1] /[1,2]BNF can be used to describe lithofacies. This ratio is much lower in sediments from fluvial-deltaic systems compared to clay-depleted sediments from marine environments (e.g. carbonate sequences). For this study, the Triassic source rocks show ratios of 0.9–1.5 with 25% w/w of clay content in the rock whereas the ratios for the Middle Jurassic source rocks are around 1.6–2.1 with 14% w/w of clay content. The BNF ratio is lowest in the Late Jurassic samples (0.8) with 28% w/w of clay minerals. The ternary plot of [2,1] -[1,2]-[2,3] BNFs could be applied to fluid–fluid and fluid-source rock correlations. However, further work needs to be done on the factors controlling the abundance of the [2,3]BNF which is more abundant in source rocks compared to the fluids generated and expelled from these. | |
dc.publisher | Pergamon | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/LP150100341 | |
dc.title | The significance of benzo[b]naphtho[d]furans in fluids and source rocks: New indicators of facies type in fluvial-deltaic systems | |
dc.type | Journal Article | |
dcterms.source.volume | 113 | |
dcterms.source.startPage | 175 | |
dcterms.source.endPage | 183 | |
dcterms.source.issn | 0146-6380 | |
dcterms.source.title | Organic Geochemistry | |
curtin.department | Department of Chemistry | |
curtin.accessStatus | Fulltext not available |
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