Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Paul F. Dennis"'
Autor:
Richmal B. Paxton, Paul F. Dennis, Alina D. Marca, James P. Hendry, John D. Hudson, Julian E. Andrews
Publikováno v:
The Depositional Record, Vol 7, Iss 2, Pp 333-343 (2021)
Abstract Septarian carbonate concretions in marine mudrocks contain calcite cements that should represent evolving conditions from ambient temperature, shallow subsurface environments to warmer, burial diagenetic conditions. Clumped isotope results f
Externí odkaz:
https://doaj.org/article/7f593133276743acae1917ec81446a28
Publikováno v:
Journal of the Geological Society. 180
This study focuses on new clumped isotope data from concretionary calcite cements in the Middle Jurassic Valtos Sandstone Formation (Great Estuarine Group) of the Inner Hebrides. Clumped isotopes show that concretion cementation began at 45 ± 6°C i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ee0c2394560a8c0733a618af18525fc
https://doi.org/10.1144/jgs2022-175
https://doi.org/10.1144/jgs2022-175
Autor:
James P. Hendry, Alina Marca, J. D. Hudson, Paul F. Dennis, Richmal B. Paxton, Julian E. Andrews
Publikováno v:
The Depositional Record, Vol 7, Iss 2, Pp 333-343 (2021)
Septarian carbonate concretions in marine mudrocks contain calcite cements that should represent evolving conditions from ambient temperature, shallow subsurface environments to warmer, burial diagenetic conditions. Clumped isotope results from Briti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3be88ce8321a8e8cfe580477fe288c50
https://ueaeprints.uea.ac.uk/id/eprint/79392/
https://ueaeprints.uea.ac.uk/id/eprint/79392/
Autor:
Alexander T. Brasier, Simon Crook, John Parnell, Paul F. Dennis, Timothy Culwick, John Still, David Muirhead, David Wacey, Adrian J. Boyce, Stephen A. Bowden, Martin D. Brasier
Publikováno v:
Precambrian Research. 328:309-320
Putative stromatolites and associated carbonate minerals in 1.1 Ga Stoer Group lacustrine sedimentary rocks were analysed to deduce their likely origins. Potential stromatolite examples included finely laminated and sometimes wrinkled carbonate-silic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8994d713e3d8d6792a066e511cab3824
https://doi.org/10.1016/j.precamres.2019.04.025
https://doi.org/10.1016/j.precamres.2019.04.025
Publikováno v:
Journal of the Geological Society. 176:447-461
We have used clumped isotope thermometry to study a fault-hosted hydrothermal calcite vein associated with the Mississippi Valley Type (MVT) mineralization on the Derbyshire Platform in the southern Pennines, UK. This is the first published dataset o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9536edbb467bfa5b5ff10dee281a3e7c
https://doi.org/10.1144/jgs2016-117
https://doi.org/10.1144/jgs2016-117
The sedimentary environment and notably the climate conditions that pertained during deposition of the Mesoproterozoic (~1200 Ma) Torridonian Stoer Group have been subject to debate for some time. On one hand it has been proposed that, despite the lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5bec8cc5006063270189dbcd594555c
https://doi.org/10.5194/egusphere-egu21-4122
https://doi.org/10.5194/egusphere-egu21-4122
Publikováno v:
Goldschmidt2021 abstracts.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e59fb6d1d2b4714f84df4b031b943338
https://doi.org/10.7185/gold2021.5855
https://doi.org/10.7185/gold2021.5855
Publikováno v:
Marine and Petroleum Geology. 122:104641
The early Eocene paralic sandstones of the Hildasay Member of the Flett Formation form the major oil-bearing reservoir in the Cambo Field, located in the Faroe-Shetland Basin. The sandstones locally contain calcite-cemented intervals that vary in thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9af34f19730d3e3129fdb84207cb57d3
https://doi.org/10.1016/j.marpetgeo.2020.104641
https://doi.org/10.1016/j.marpetgeo.2020.104641
Autor:
P.J. Rowe, Andy Baker, L. Fuller, Ian J. Fairchild, Paul F. Dennis, Christoph Spötl, A. Marca-Bell
Publikováno v:
Scopus-Elsevier
Hydrology and Earth System Sciences, Vol 12, Iss 4, Pp 1065-1074 (2008)
Hydrology and Earth System Sciences, Vol 12, Iss 4, Pp 1065-1074 (2008)
Dripwater hydrology and hydrogeochemistry is particularly useful in constraining the meaning of speleothem palaeoclimate archives, for example using δ18O signatures. Here, we calibrate the relationship between δ18O in precipitation, percolation wat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7877dfadf834fbbe97db39968fec805
https://www.hydrol-earth-syst-sci.net/12/1065/2008/
https://www.hydrol-earth-syst-sci.net/12/1065/2008/
Publikováno v:
Geochimica et Cosmochimica Acta. 165:75-85
Compound-specific δ2H values of leaf wax n-alkanes have emerged as a potentially powerful paleohydrological proxy. Research suggests terrestrial plant n-alkane δ2H values are strongly correlated with meteoric water δ2H values, and may provide info
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fc32bfd54f8c2e09414e2a5550ac345
https://doi.org/10.1016/j.gca.2015.05.001
https://doi.org/10.1016/j.gca.2015.05.001