Show simple item record

dc.contributor.authorCesar, J.
dc.contributor.authorGrice, Kliti
dc.date.accessioned2017-12-10T12:39:07Z
dc.date.available2017-12-10T12:39:07Z
dc.date.created2017-12-10T12:20:14Z
dc.date.issued2017
dc.identifier.citationCesar, 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.urihttp://hdl.handle.net/20.500.11937/59186
dc.identifier.doi10.1016/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.publisherPergamon
dc.titleThe significance of benzo[b]naphtho[d]furans in fluids and source rocks: New indicators of facies type in fluvial-deltaic systems
dc.typeJournal Article
dcterms.source.volume113
dcterms.source.startPage175
dcterms.source.endPage183
dcterms.source.issn0146-6380
dcterms.source.titleOrganic Geochemistry
curtin.departmentDepartment of Chemistry
curtin.accessStatusFulltext not available


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record