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dc.contributor.author Evans, J. A.
dc.contributor.author Zalasiewicz, J. A.
dc.contributor.author Rasmussen, B.
dc.contributor.author Fletcher, I.
dc.contributor.author Pearce, Nicholas J. G.
dc.date.accessioned 2011-09-06T11:34:08Z
dc.date.available 2011-09-06T11:34:08Z
dc.date.issued 2002-12-01
dc.identifier.citation Evans , J A , Zalasiewicz , J A , Rasmussen , B , Fletcher , I & Pearce , N J G 2002 , ' Dating diagenetic monazite in mudrocks : Constraining the oil window? ' Journal of the Geological Society , vol 159 , pp. 619-622 . DOI: 10.1144/0016-764902-066 en
dc.identifier.issn 2041-479X
dc.identifier.other PURE: 170484
dc.identifier.other PURE UUID: ef719229-bca4-448e-b644-189beff6aef7
dc.identifier.other dspace: 2160/7559
dc.identifier.uri http://hdl.handle.net/2160/7559
dc.description Evans, J. A., Zalasiewicz, J. A., Fletcher, I., Rasmussen, B., Pearce, N. J. G. (2002). Dating diagenetic monazite in mudrocks: constraining the oil window?. Journal of the Geological Society, 519 (6), 619-622. en
dc.description.abstract Authigenic monazite nodules, increasingly recognized in Pre-Mesozoic mudrock successions, provide a means for dating diagenesis by exploiting trace uranium within the monazite structure. But, dating is difficult in practice because of zonation and abundant host rock inclusions. We report here a refined technique that has yielded a date of 419 ± 14 Ma 2σ MSWD = 1.2 for a 17-point Pb–Pb regression age from a Telychian (Silurian: late Llandovery) mudrock from central Wales. SHRIMP analyses of monazite nodules from the same horizon are consistent with this, and additionally demonstrate concordance of the U–Pb and Th–Pb systems. These results open the door to providing robust dates for a phase of burial-related diagenesis which, in Wales, seems approximately coincident with, and perhaps was related to, hydrocarbon expulsion. en
dc.format.extent 4 en
dc.language.iso eng
dc.relation.ispartof Journal of the Geological Society en
dc.rights en
dc.subject palaeozoic en
dc.subject Welsh Basin en
dc.subject oil window en
dc.subject monazite en
dc.subject RARE-EARTH ELEMENTS en
dc.subject U-PB en
dc.subject COLLOIDAL PARTICLES en
dc.subject NORTH WALES en
dc.subject WELSH BASIN en
dc.subject FRACTIONATION en
dc.subject METAMORPHISM en
dc.subject ASSEMBLAGES en
dc.subject CARBONATES en
dc.subject URANIUM en
dc.title Dating diagenetic monazite in mudrocks : Constraining the oil window? en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.identifier.doi http://dx.doi.org/10.1144/0016-764902-066
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Other IGES Research en
dc.description.status Peer reviewed en


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