Výsledky vyhledávání - "Michael A. Pointon"

Akademický článek

A Multi-proxy Provenance Study of Late Carboniferous to Middle Jurassic Sandstones in the Eastern Sverdrup Basin and Its Bearing on Arctic Palaeogeographic Reconstructions

Autor: Michael A. Pointon, Helen Smyth, Jenny E. Omma, Andrew C. Morton, Simon Schneider, Peter Hülse, Stephen J. Rippington, Berta Lopez-Mir, Quentin G. Crowley, Ian Millar, Martin J. Whitehouse, Dirk Frei, Robert A. Scott, Michael J. Flowerdew

Publikováno v: Geosciences, Vol 13, Iss 1, p 10 (2022)

A multi-proxy provenance study of Late Carboniferous to Middle Jurassic sandstones from the eastern Sverdrup Basin was undertaken employing optical petrography and heavy mineral analysis, chemical analysis of apatite, garnet and rutile grains, as wel

Externí odkaz: https://doaj.org/article/ab92a6765c4a4239b5d62795e51c4083

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A multi-proxy provenance study of Late Carboniferous to Middle Jurassic sandstones in the Eastern Sverdrup Basin and its bearing on Arctic palaeogeographic reconstructions

Publikováno v: Geosciences; Volume 13; Issue 1; Pages: 10

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bf9984e065bbe60b519b08c73417169

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Mixed local and ultra-distal volcanic ash deposition within the Upper Cretaceous Kanguk Formation, Sverdrup Basin, Canadian Arctic Islands

Autor: Simon Schneider, Peter Hülse, Michael J. Flowerdew, Martin J. Whitehouse, Michael A. Pointon

Publikováno v: Geological Magazine. 156:2067-2084

The Upper Cretaceous Kanguk Formation of the Sverdrup Basin, Canadian Arctic Islands, contains numerous diagenetically altered volcanic ash layers (bentonites). Eleven bentonites were sampled from an outcrop section on Ellesmere Island for U–Pb zir

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37260e1de88f853a9df39d0d1a4bd54f
https://doi.org/10.1017/s0016756819000414

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Tracking compositional changes within the High Arctic Large Igneous Province using zircon Hf isotopes from altered volcanic ash layers of the Sverdrup Basin, Canada

Autor: Peter Hülse, Simon Schneider, Ian L. Millar, Michael J. Flowerdew, Michael A. Pointon, Martin J. Whitehouse

During Late Cretaceous times the Sverdrup Basin, Arctic Canada, received considerable air-fall volcanic material. This is manifested as numerous centimetre- to decimetre-thick diagenetically altered volcanic ash layers (bentonites) that occur interbe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2b1e67ba2f69dd15ce52ff391e96509
https://doi.org/10.5194/egusphere-egu21-15074

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Final Year Students' Approaches to Implementing Complex Distributed Systems

Autor: Michael Scott Pointon, Claudia Szabo

Publikováno v: ITiCSE

Understanding how final year students build complex software systems is critical for determining whether desired graduate outcomes have been met, for identifying curriculum gaps, and for designing scaffolding and support structures. A large body of w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a6d92c10233e0a78d96a8181598d2880
https://doi.org/10.1145/3304221.3319774

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Geochemistry and origin of Carboniferous (Mississippian; Viséan) bentonites in the Namur-Dinant Basin, Belgium: evidence for a Variscan volcanic source

Autor: Michael A. Pointon, Bernard Delcambre, David Chew, George D. Sevastopulo

Publikováno v: Geologica Belgica, Vol. 21, no.1-2, p. 1-17 (2018)

1. Introduction Several clay-rich horizons interbedded with Mississippian (Visean) limestones in the Namur-Dinant Basin (NDB), Belgium, are interpreted to be diagenetically altered volcanic ash layers based on their lateral continuity, clay mineralog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0df3174f0157e541177d6ede476d5eb6
https://hdl.handle.net/2078.1/214764

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High-precision U–Pb zircon CA-ID-TIMS dates from western European late Viséan bentonites

Autor: Maria Ovtcharova, David Chew, Bernard Delcambre, George D. Sevastopulo, Michael A. Pointon

Publikováno v: Journal of the Geological Society. 171:649-658

Three new U–Pb zircon chemical abrasion isotope dilution thermal ionization mass spectrometry dates obtained from late Visean Belgian bentonites are reported and are used to estimate the periodicity of early Warnantian shallowing-upwards carbonate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7196edde984ee9f39cc7a6f98de58ff6
https://doi.org/10.1144/jgs2013-106

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The provenance of Western Irish Namurian Basin sedimentary strata inferred using detrital zircon U-Pb LA-ICP-MS geochronology

Autor: Robert A. Cliff, Michael A. Pointon, David Chew

Publikováno v: Geological Journal. 47:77-98

The Western Irish Namurian Basin (WINB) preserves classic examples of basin floor sequences through to slope deposits and deltaic cyclothems. Despite over 50 years of research into the WINB, its sediment provenance remains highly contested. Sedimento

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::394743b3821c400983544094cf23bb18
https://doi.org/10.1002/gj.1335

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