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  • John Parnell
2013

Circumstellar habitable zones for deep terrestrial biospheres

McMahon, S. H., O'Malley-James, J. & Parnell, J., 1 Sep 2013, In : Planetary and space science. 85, p. 312-318 7 p.

Research output: Contribution to journalArticle

Open Access
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13 Citations (Scopus)
6 Downloads (Pure)
2014

Ar-40/Ar-39 dating of exceptional concentration of metals by weathering of Precambrian rocks at the Precambrian-Cambrian boundary

Parnell, J., Mark, D. F., Frei, R., Fallick, A. E. & Ellam, R. M., Jun 2014, In : Precambrian Research. 246, p. 54-63 10 p.

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
4 Downloads (Pure)
2013

Raman Spectroscopic Analysis of Geological and Biogeological Specimens of Relevance to the ExoMars Mission

Edwards, H. G. M., Hutchinson, I. B., Ingley, R., Parnell, J., Vitek, P. & Jehlicka, J., Jun 2013, In : Astrobiology. 13, 6, p. 543-549 7 p.

Research output: Contribution to journalArticle

Open Access
File
38 Citations (Scopus)
4 Downloads (Pure)
2014

Cadmium sulfide in a Mesoproterozoic terrestrial environment

Parnell, J., Still, J., Spinks, S., Thayalan, W. & Bowden, S., Feb 2014, In : Mineralogical Magazine. 78, 1, p. 47-54 8 p.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
6 Downloads (Pure)
2011

A demonstration of an affinity between pyrite and organic matter in a hydrothermal setting

Lindgren, P., Parnell, J., Holm, N. G. & Broman, C., 7 Feb 2011, In : Geochemical Transactions. 12, 7 p., 3.

Research output: Contribution to journalArticle

14 Citations (Scopus)
2015

Asphaltene detection using Surface Enhanced Raman Scattering (SERS)

Alabi, O. O., Edilbi, A. N. F., Brolly, C., Muirhead, D., Parnell, J., Stacey, R. & Bowden, S. A., 2015, In : Chemical Communications. 51, 33, p. 7152-7155 4 p.

Research output: Contribution to journalArticle

Open Access
File
13 Citations (Scopus)
10 Downloads (Pure)
2017

Selenium and other trace element mobility in waste products and weathered sediments at Parys Mountain copper mine, Anglesey, UK

Bullock, L. A., Parnell, J., Perez, M., Feldmann, J. & Armstrong, J. G., 22 Nov 2017, In : Minerals. 7, 11, p. 1-19 19 p., 229.

Research output: Contribution to journalArticle

Open Access
File
8 Citations (Scopus)
13 Downloads (Pure)
2012

Ordovician ash geochemistry and the establishment of land plants

Parnell, J. & Foster, S., 28 Aug 2012, In : Geochemical Transactions. 13, 7.

Research output: Contribution to journalArticle

Open Access
File
8 Citations (Scopus)
4 Downloads (Pure)
2016

Low-temperature concentration of tellurium and gold in continental red bed successions

Parnell, J., Spinks, S. & Bellis, D., Jun 2016, In : Terra Nova. 28, 3, p. 221-227 7 p.

Research output: Contribution to journalArticle

Open Access
File
8 Citations (Scopus)
3 Downloads (Pure)
2019

Methane in sulphides from gold-bearing deposits, Britain and Ireland

Parnell, J., Spinks, S. & Blamey, N., 2019, In : Applied Earth Science. 128, 3, p. 89-95 7 p.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
1 Downloads (Pure)
2018

Tellurium and selenium in Mesoproterozoic red beds

Parnell, J., Spinks, S. & Brolly, C., Feb 2018, In : Precambrian Research. 305, p. 145-150 6 p.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
7 Downloads (Pure)
2019

Determination of Se and Te in coal at ultra-trace levels by ICP-MS after microwave-induced combustion

Rondan, F. S., Henn, A. S., Mello, P. A., Perez, M., Bullock, L. A., Parnell, J., Feldmann, J., Flores, E. M. M. & Mesko, M. F., 1 May 2019, In : Journal of Analytical Atomic Spectrometry. 34, 5, p. 998-1004 7 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2017

A black shale protolith for gold-tellurium mineralization in the Dalradian Supergroup (Neoproterozoic) of Britain and Ireland

Parnell, J., Perez, M., Armstrong, J., Bullock, L., Feldmann, J. & Boyce, A. J., 2017, In : Applied Earth Science. 126, 4, p. 161-175 15 p.

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
11 Downloads (Pure)
2018
Open Access
File
1 Citation (Scopus)
9 Downloads (Pure)
2019

Coal mining-derived ochres in the UK: a potential selenium trap

Bullock, L. A., Parnell, J., Perez, M. & Armstrong, J. G. T., Jul 2019, Geology Today, 35, 4, p. 140-145 6 p.

Research output: Contribution to specialist publicationArticle

2015

Selenium and tellurium enrichment in palaeo-oil reservoirs

Parnell, J., Bellis, D., Feldmann, J. & Bata, T., Jan 2015, In : Journal of Geochemical Exploration. 148, p. 169-173 5 p.

Research output: Contribution to journalArticle

18 Citations (Scopus)
2019

Aeolian abrasion of rocks as a mechanism to produce methane in the Martian atmosphere

Safi, E., Telling, J., Parnell, J., Chojnacki, M., Patel, M. R., Realff, J., Blamey, N. J. F., Payler, S., Cockell, C. S., Davies, L., Boothroyd, I. M., Worrall, F. & Wadham, J. L., 3 Jun 2019, In : Scientific Reports. 9, 1, 7 p., 8229 .

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
3 Downloads (Pure)

Selenium and tellurium concentrations of Carboniferous British coals

Bullock, L. A., Parnell, J., Feldmann, J., Armstrong, J. G., Henn, A. S., Mesko, M. F., Mello, P. A. & Flores, E. M. M., 31 May 2019, In : Geological Journal. 54, 3, p. 1401-1412 12 p.

Research output: Contribution to journalArticle

Open Access
File
5 Citations (Scopus)
7 Downloads (Pure)
2017

Subsurface biodegradation of crude oil in a fractured basement reservoir, Shropshire, UK

Parnell, J., Baba, M., Bowden, S. & Muirhead, D., 7 Mar 2017, In : Journal of the Geological Society . 174, 4, p. 655-666 12 p.

Research output: Contribution to journalArticle

Open Access
File
13 Citations (Scopus)
8 Downloads (Pure)
2014

Redox-controlled selenide mineralization in the upper old red sandstone

Spinks, S. C., Parnell, J. & Still, J. W., Oct 2014, In : Scottish Journal of Geology. 50, 2, p. 173-182 10 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Enhanced organic carbon burial in large Proterozoic lakes: Implications for atmospheric oxygenation

Spinks, S. C., Parnell, J., Bowden, S. A., Taylor, R. A. D. & Maclean, M. E., Dec 2014, In : Precambrian Research. 255, Part 1, p. 202-215 14 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2018

The deep history of Earth's biomass

McMahon, S. & Parnell, J., 2018, In : Journal of the Geological Society . 175, p. 716-720 5 p.

Research output: Contribution to journalArticle

Open Access
File
7 Citations (Scopus)
1 Downloads (Pure)
2016

A micrometeorite record in Ordovician Durness Group limestones, Isle of Skye

Parnell, J., Salter, N. & West, P., Jun 2016, In : Earth and Environmental Science Transactions of the Royal Society of Edinburgh . 106, 2, p. 81-87 7 p.

Research output: Contribution to journalArticle

Open Access
File
12 Downloads (Pure)
2018

High selenium in the Carboniferous Coal Measures of Northumberland, North East England

Bullock, L. A., Parnell, J., Perez, M., Armstrong, J. G., Feldmann, J. & Boyce, A. J., 1 Jul 2018, In : International Journal Of Coal Geology. 195, p. 61-74 14 p.

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
8 Downloads (Pure)
2017

Deep hydrothermal activity in hydrocarbon reservoirs, South Kuwait

Al-Hajeri, M. M., Parnell, J., Bowden, S., Costanzo, A. & Feely, M., Jan 2017, In : Arabian Journal of Geosciences. 10, 2, 41.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2019

Surface mineral crusts: a potential strategy for sampling for evidence of life on Mars

Brolly, C., Parnell, J. & Bowden, S., Apr 2019, In : International Journal of Astrobiology. 18, 2, p. 91-101 11 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
8 Downloads (Pure)
2011

Ellsworth Subglacial Lake, West Antarctica: A Review of Its History and Recent Field Campaigns

Ross, N., Siegert, M. J., Rivera, A., Bentley, M. J., Blake, D., Capper, L., Clarke, R., Cockell, C. S., Corr, H. F. J., Harris, W., Hill, C., Hindmarsh, R. C. A., Hodgson, D. A., King, E. C., Lamb, H., Maher, B., Makinson, K., Mowlem, M., Parnell, J., Pearce, D. A. & 7 others, Priscu, J., Smith, A. M., Tait, A., Tranter, M., Wadham, J. L., Whalley, W. B. & Woodward, J., Jan 2011, Antarctic Subglacial Aquatic Environments. Siegert, M. J., Kennicutt II, M. C. & Bindschadler, R. A. (eds.). American Geophysical Union, p. 221-233 13 p. (Geophysical Monograph Series; vol. 192).

Research output: Chapter in Book/Report/Conference proceedingChapter

16 Citations (Scopus)
2016

Clean subglacial access: prospects for future deep hot-water drilling

Makinson, K., Pearce, D., Hodgson, D. A., Bentley, M. J., Smith, A. M., Tranter, M., Rose, M., Ross, N., Mowlem, M., Parnell, J. & Siegert, M. J., 28 Jan 2016, In : Philosophical transactions of the royal society a-Mathematical physical and engineering sciences. 374, 2059, 20140304.

Research output: Contribution to journalArticle

Open Access
File
9 Citations (Scopus)
5 Downloads (Pure)
2012

Clean access, measurement, and sampling of Ellsworth Subglacial Lake: A method for exploring deep Antarctic subglacial lake environments

Siegert, M. J., Clarke, R. J., Mowlem, M., Ross, N., Hill, C. S., Tait, A., Hodgson, D., Parnell, J., Tranter, M., Pearce, D., Bentley, M. J., Cockell, C., Tsaloglou, M. N., Smith, A., Woodward, J., Brito, M. P. & Waugh, E., Mar 2012, In : Reviews of Geophysics. 50, 1, 40 p., RG1003.

Research output: Contribution to journalArticle

31 Citations (Scopus)
2017

Geochemistry and origin of organic-rich sediment veins in fractured granitic basement, Helmsdale, Sutherlandshire, UK

Parnell, J., Baba, MU., Bowden, S. & Bullock, L., Dec 2017, In : Marine and Petroleum Geology. 88, p. 107-114 8 p.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
11 Downloads (Pure)
2018

Reduction spheroids preserve a uranium isotope record of the ancient deep continental biosphere

McMahon, S., Hood, A. V. S., Parnell, J. & Bowden, S., 29 Oct 2018, In : Nature Communications. 9, 4505.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
5 Downloads (Pure)
2011

Probe Technology for the Direct Measurement and Sampling of Ellsworth Subglacial Lake

Mowlem, M. C., Tsaloglou, M. N., Waugh, E. M., Floquet, C. F. A., Saw, K., Fowler, L., Brown, R., Pearce, D., Wyatt, J. B., Beaton, A. D., Brito, M. P., Hodgson, D. A., Griffiths, G., Bentley, M., Blake, D., Capper, L., Clarke, R., Cockell, C., Corr, H., Harris, W. & 17 others, Hill, C., Hindmarsh, R., King, E., Lamb, H., Maher, B., Makinson, K., Parnell, J., Priscu, J., Rivera, A., Ross, N., Siegert, M. J., Smith, A., Tait, A., Tranter, M., Wadham, J., Whalley, B. & Woodward, J., 1 Jan 2011, Antarctic Subglacial Aquatic Environments. Siegert, M. J., Kennicutt II, M. C. & Bindschadler, R. A. (eds.). American Geophysical Union, p. 159-186 28 p. (Geophysical Monograph Series; vol. 192).

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)
2018

Determination of Se at low concentration in coal by collision/reaction cell technology inductively coupled plasma mass spectrometry

Henn, A. S., Rondan, F. S., Mesko, M. F., Mello, P. A., Perez, M., Armstrong, J., Bullock, L. A., Parnell, J., Feldmann, J. & Flores, E. M. M., May 2018, In : Spectrochimica Acta - Part B Atomic Spectroscopy. 143, p. 48-54 7 p.

Research output: Contribution to journalArticle

Open Access
File
9 Citations (Scopus)
8 Downloads (Pure)
2016

The geological and microbiological controls on the occurrence, mobility and concentration of Se and Te in coal and black shales

Bullock, L. A., Armstrong, J. G. & Parnell, J., 2016, In : Applied Earth Science. 125, 2, p. 79-79 1 p.

Research output: Contribution to journalAbstract

Open Access
File
4 Downloads (Pure)
2014

A Neoproterozoic petroleum system in the Dalradian Supergroup, Scottish Caledonides

Bata, T. & Parnell, J., Mar 2014, In : Journal of the Geological Society . 171, 2, p. 145-148 4 p.

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
5 Downloads (Pure)
2013

Sampling methane in basalt on Earth and Mars

McMahon, S., Parnell, J. & Blamey, N. J. F., Apr 2013, In : International Journal of Astrobiology. 12, 2, p. 113-122 10 p.

Research output: Contribution to journalArticle

Open Access
File
15 Citations (Scopus)
5 Downloads (Pure)
2011

The age of the Mesoproterozoic Stoer Group sedimentary and impact deposits, NW Scotland

Parnell, J., Mark, D., Fallick, A. E., Boyce, A. & Thackrey, S., Mar 2011, In : Journal of the Geological Society . 168, 2, p. 349-358 10 p.

Research output: Contribution to journalArticle

38 Citations (Scopus)
2015
Open Access
File
7 Citations (Scopus)
13 Downloads (Pure)
2019

A thermal maturity map based on vitrinite reflectance of British coals

Bullock, L., Parnell, J., Muirhead, D., Armstrong, J., Schito, A. & Corrado, S., 1 Nov 2019, In : Journal of the Geological Society . 176, 6, p. 1136-1142 7 p.

Research output: Contribution to journalArticle

Open Access
File
7 Downloads (Pure)
2017
Open Access
File
5 Citations (Scopus)
53 Downloads (Pure)
2014

Constraining causes of fish mass mortality using ultra-high-resolution biomarker measurement

Othman Wilson, A., Parnell, J., Boyce, A. J. & Bowden, S. A., Oct 2014, In : Chemical Geology. 385, p. 156-162 7 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
5 Downloads (Pure)
2015

Evidence for microbial activity in British and Irish Ordovician pillow lavas

Parnell, J., Hole, M. & Boyce, A. J., 1 Jul 2015, In : Geological Journal. 50, 4, p. 497-508 12 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2019

Naturally propped fractures caused by quartz cementation preserve oil reservoirs in basement rocks

Baba, M., Parnell, J. & Bowden, S. A., Aug 2019, In : Terra Nova. 31, 4, p. 343-347 5 p.

Research output: Contribution to journalArticle

Open Access
File
1 Downloads (Pure)
2017

Microbial sulphate reduction during Neoproterozoic glaciation, Port Askaig Formation, UK

Parnell, J. & Boyce, A. J., 2017, In : Journal of the Geological Society . 174, p. 850-854 5 p.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
6 Downloads (Pure)
2013

Long term geological record of a global deep subsurface microbial habitat in sand injection complexes

Parnell, J., Boyce, A. J., Hurst, A., Davidheiser-Kroll, B. & Ponicka, J., 17 May 2013, In : Scientific Reports. 3, 6 p., 1828.

Research output: Contribution to journalArticle

Open Access
File
12 Citations (Scopus)
8 Downloads (Pure)
2017

Global hydrogen reservoirs in basement and basins

Parnell, J. & Blamey, N., 20 Mar 2017, In : Geochemical Transactions. 18, 2.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
8 Downloads (Pure)
2018

The geochemistry of oil in Cornish granites

Baba, MU., Parnell, J. & Bowden, S., 19 Dec 2018, In : Petroleum Geoscience. 25, 3, p. 298-305 8 p.

Research output: Contribution to journalArticle

Open Access
File
1 Downloads (Pure)
2017

Contrasting microfossil preservation and lake chemistries within the 1200–1000 Ma Torridonian Supergroup of NW Scotland

Wacey, D., Brasier, M., Parnell, J., Culwick, T., Bowden, S., Spinks, S., Boyce, A. J., Davidheiser-Kroll, B., Jeon, H., Saunders, M. & Kilburn, M. R., 2017, Earth System Evolution and Early Life: a Celebration of the Work of Martin Brasier. Brasier, A. T., McIlroy, D. & McLoughlin, N. (eds.). Geological Society of London, Vol. 448. p. 105-119 15 p. (Geological Society Special Publications; vol. 448, no. 1).

Research output: Chapter in Book/Report/Conference proceedingChapter

Open Access
File
3 Citations (Scopus)
8 Downloads (Pure)
2013

Groundwater activity on Mars and implications for a deep biosphere

Michalski, J. R., Cuadros, J., Niles, P. B., Parnell, J., Rogers, A. D. & Wright, S. P., Feb 2013, In : Nature Geoscience. 6, 2, p. 133-138 6 p.

Research output: Contribution to journalArticle

109 Citations (Scopus)
2016

Gold in Devono-Carboniferous red beds of northern Britain

Parnell, J., Still, J., Spinks, S. & Bellis, D., Mar 2016, In : Journal of the Geological Society . 173, 2, p. 245-248 4 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
6 Downloads (Pure)