Matches in SemOpenAlex for { <https://semopenalex.org/work/W2587661946> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W2587661946 abstract "Petroleum exploration in the Faroe-Shetland basin has resulted in the drilling of wells some of which contain expanded sections across the Palaeocene Eocene thermal maximum event (PETM). Here we present data from a Faroe – Shetland Basin well. Samples analysed have a mixture of terrestrial and marine inputs. PETM events, are recorded in both bulk and compound specific carbon isotope excursions of 2-3'. In addition, the PETM is marked by a change in palynology and we have observed changes in the distribution of biomarkers across the PETM and recognise a sharply defined spike in 25,28,30- trisnorhopane (TNH) and 28,30-bisnorhopane (BNH) concentrations at the PETM boundary. Firstly, while we have been able to identify variation in a range of compounds present in the core, their variation reassuringly mostly follow associated palynological changes. Demethylated hopanes 28,30-bisnorhopane (BNH) and 25,28,30-trisnorhopane (TNH), are present in relatively low concentrations just below and above the carbon isotope excursion (CIE), but in high concentrations at the PETM (Fig 1). The actual bacteria responsible for TNH and BNH in geological samples has so far not been determined [1]. However, BNH and TNH are thought to be produced by chemoautotrophic bacteria, their presence in rocks which formed in inner neritic environments may indicate strong upwelling or perhaps ocean overturn. Extreme shallowing of the CCD is well documented at the PETM, but there has previously been no clear indicator for a potential ocean overturn, although this has previously been mentioned as a potential driver for the event. While this has been dismissed as a mechanism driving the PETM events because it was envisaged as a local basin overturn, and can not explain the global extent of the PETM [2], we propose that the presence of TNH and BNH indicates ocean overturn may have played a role in the PETM. While it may not explain the isotopically light carbon in its entirety, stratification and ocean overturn may be a consequence of high temperatures, since palynological evidence indicates very low salinity conditions in surface waters at the PETM." @default.
- W2587661946 created "2017-02-17" @default.
- W2587661946 creator A5021178084 @default.
- W2587661946 creator A5057739748 @default.
- W2587661946 date "2009-01-01" @default.
- W2587661946 modified "2023-09-26" @default.
- W2587661946 title "High concentration of 28,30-bisnorhopane and 25,28,30-trisnorhopane at the PETM in the Faroe-Shetland basin" @default.
- W2587661946 cites W30614123 @default.
- W2587661946 hasPublicationYear "2009" @default.
- W2587661946 type Work @default.
- W2587661946 sameAs 2587661946 @default.
- W2587661946 citedByCount "0" @default.
- W2587661946 crossrefType "journal-article" @default.
- W2587661946 hasAuthorship W2587661946A5021178084 @default.
- W2587661946 hasAuthorship W2587661946A5057739748 @default.
- W2587661946 hasConcept C107872376 @default.
- W2587661946 hasConcept C109007969 @default.
- W2587661946 hasConcept C111368507 @default.
- W2587661946 hasConcept C126559015 @default.
- W2587661946 hasConcept C127313418 @default.
- W2587661946 hasConcept C151730666 @default.
- W2587661946 hasConcept C158787203 @default.
- W2587661946 hasConcept C162501224 @default.
- W2587661946 hasConcept C167195282 @default.
- W2587661946 hasConcept C167570900 @default.
- W2587661946 hasConcept C185059815 @default.
- W2587661946 hasConcept C185592680 @default.
- W2587661946 hasConcept C18903297 @default.
- W2587661946 hasConcept C2776141960 @default.
- W2587661946 hasConcept C2780618852 @default.
- W2587661946 hasConcept C2780978308 @default.
- W2587661946 hasConcept C73707237 @default.
- W2587661946 hasConcept C86803240 @default.
- W2587661946 hasConcept C97316735 @default.
- W2587661946 hasConceptScore W2587661946C107872376 @default.
- W2587661946 hasConceptScore W2587661946C109007969 @default.
- W2587661946 hasConceptScore W2587661946C111368507 @default.
- W2587661946 hasConceptScore W2587661946C126559015 @default.
- W2587661946 hasConceptScore W2587661946C127313418 @default.
- W2587661946 hasConceptScore W2587661946C151730666 @default.
- W2587661946 hasConceptScore W2587661946C158787203 @default.
- W2587661946 hasConceptScore W2587661946C162501224 @default.
- W2587661946 hasConceptScore W2587661946C167195282 @default.
- W2587661946 hasConceptScore W2587661946C167570900 @default.
- W2587661946 hasConceptScore W2587661946C185059815 @default.
- W2587661946 hasConceptScore W2587661946C185592680 @default.
- W2587661946 hasConceptScore W2587661946C18903297 @default.
- W2587661946 hasConceptScore W2587661946C2776141960 @default.
- W2587661946 hasConceptScore W2587661946C2780618852 @default.
- W2587661946 hasConceptScore W2587661946C2780978308 @default.
- W2587661946 hasConceptScore W2587661946C73707237 @default.
- W2587661946 hasConceptScore W2587661946C86803240 @default.
- W2587661946 hasConceptScore W2587661946C97316735 @default.
- W2587661946 hasLocation W25876619461 @default.
- W2587661946 hasOpenAccess W2587661946 @default.
- W2587661946 hasPrimaryLocation W25876619461 @default.
- W2587661946 hasRelatedWork W1132209633 @default.
- W2587661946 hasRelatedWork W1982252369 @default.
- W2587661946 hasRelatedWork W1985260036 @default.
- W2587661946 hasRelatedWork W1989056337 @default.
- W2587661946 hasRelatedWork W2000412368 @default.
- W2587661946 hasRelatedWork W2021801482 @default.
- W2587661946 hasRelatedWork W2063078603 @default.
- W2587661946 hasRelatedWork W2072249057 @default.
- W2587661946 hasRelatedWork W2077790570 @default.
- W2587661946 hasRelatedWork W2085086651 @default.
- W2587661946 hasRelatedWork W2131270228 @default.
- W2587661946 hasRelatedWork W2136766324 @default.
- W2587661946 hasRelatedWork W2136864339 @default.
- W2587661946 hasRelatedWork W2153010793 @default.
- W2587661946 hasRelatedWork W2163565940 @default.
- W2587661946 hasRelatedWork W2586355911 @default.
- W2587661946 hasRelatedWork W2910727622 @default.
- W2587661946 hasRelatedWork W3084401676 @default.
- W2587661946 hasRelatedWork W3108955347 @default.
- W2587661946 hasRelatedWork W3195249904 @default.
- W2587661946 isParatext "false" @default.
- W2587661946 isRetracted "false" @default.
- W2587661946 magId "2587661946" @default.
- W2587661946 workType "article" @default.