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dc.contributor.authorPreece, Katie
dc.contributor.authorMark, Darren F.
dc.contributor.authorBarclay, Jenni
dc.contributor.authorCohen, Benjamin E.
dc.contributor.authorChamberlain, Katy J.
dc.contributor.authorJowitt, Claire
dc.contributor.authorVye-Brown, Charlotte
dc.contributor.authorBrown, Richard J.
dc.contributor.authorHamilton, Scott
dc.date.accessioned2019-09-09T14:46:21Z
dc.date.available2019-09-09T14:46:21Z
dc.date.issued2018-11-09
dc.identifier.citationPreece, K., Mark, D.F., Barclay, J., Cohen, B.E., Chamberlain, K.J., Jowitt, C., Vye-Brown, C., Brown, R.J. and Hamilton, S., (2018). 'Bridging the gap: 40Ar/39Ar dating of volcanic eruptions from the ‘Age of Discovery’'. Geology, 46(12), pp, 1-12. DOI: 10.1130/g45415.1.en_US
dc.identifier.issn00917613
dc.identifier.doi10.1130/g45415.1
dc.identifier.urihttp://hdl.handle.net/10545/624148
dc.description.abstractMany volcanoes worldwide still have poorly resolved eruption histories, with the date of the last eruption often undetermined. One such example is Ascension Island, where the timing of the last eruption, and consequently, the activity status of the volcano, is unclear. Here, we use the 40Ar/39Ar dating technique to resolve ages of the three youngest lava flows on the island, which are hawaiites and mugearite with 1.5 – 1.9 wt% K2O. In dating these lavas, we provide the first evidence of Holocene volcanic activity on Ascension (0.51 ± 0.18 ka; 0.55 ± 0.12 ka; 1.64 ± 0.37 ka), determining that it should be classed as an active volcanic system. In addition, we demonstrate that the 40Ar/39Ar method can reproducibly date mafic lava flows younger than 1 ka, decreasing the gap between recorded history and geological dating. These results offer new prospects for determining patterns of late-Holocene volcanic activity; critical for accurate volcanic hazard assessment.en_US
dc.description.sponsorshipLeverhulme Trust Research Project Grant (RPG-2013–042)en_US
dc.language.isoenen_US
dc.publisherGeological Society of Americaen_US
dc.relation.urlhttps://pubs.geoscienceworld.org/gsa/geology/article/46/12/1035/566403/Bridging-the-gap-40Ar39Ar-dating-of-volcanicen_US
dc.subjectvolcanologyen_US
dc.subjectgeologyen_US
dc.titleBridging the gap: 40Ar/39Ar dating of volcanic eruptions from the ‘Age of Discovery’en_US
dc.typeArticleen_US
dc.identifier.eissn19432682
dc.contributor.departmentIsotope Geoscience Unit, Scottish Universities Environmental Research Centre, East Kilbrideen_US
dc.contributor.departmentDepartment of Earth & Environmental Science, University of St Andrews, St Andrewsen_US
dc.contributor.departmentSchool of Environmental Sciences, University of East Anglia, Norwichen_US
dc.contributor.departmentDepartment of Natural Sciences, University of Derby, Derbyen_US
dc.contributor.departmentSchool of History, University of East Anglia, Norwichen_US
dc.contributor.departmentBritish Geological Survey, The Lyell Centre, Edinburghen_US
dc.contributor.departmentDepartment of Earth Sciences, Durham University, Durhamen_US
dc.contributor.departmentTIA Systems Ltd., Cheadleen_US
dc.identifier.journalGeologyen_US
dc.source.volume46
dc.source.issue12
dc.source.beginpage1035-1038
dcterms.dateAccepted2018-10-08
refterms.dateFOA2019-09-09T14:46:22Z
dc.author.detail786068en_US


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