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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
File
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)
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)
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)
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)
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)
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

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)

Selenium and tellurium resources in Kisgruva Proterozoic volcanogenic massive sulphide deposit (Norway)

Bullock, L. A., Perez, M., Armstrong, J. G., Parnell, J., Still, J. & Feldmann, J., Aug 2018, In : Ore Geology Reviews. 99, p. 411-424 15 p.

Research output: Contribution to journalArticle

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

Liberation of Selenium from Alteration of the Bowland Shale Formation: Evidence from the Mam Tor Landslide

Parnell, J., Bullock, L., Armstrong, J. & Perez, M., Nov 2018, In : Quarterly Journal of Engineering Geology and Hydrogeology. 51, 4, p. 503-508 6 p.

Research output: Contribution to journalArticle

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

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)
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)
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)
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)
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)
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)
2019

Mine-derived ochre precipitates: a potential selenium trap

Bullock, L. A., Parnell, J., Armstrong, J. G. T. & Perez, M., 2019, In : Applied Earth Science: Transactions of the Institute of Mining and Metallurgy. 128, 2, p. 41-42 2 p.

Research output: Contribution to journalArticle

2012
Open Access
File
18 Citations (Scopus)
5 Downloads (Pure)
2019

Comparative pore surface area in primary and secondary porosity in sandstones

Nolansnyder, D. R. & Parnell, J., Jan 2019, In : Journal of Petroleum Science and Engineering. 172, p. 489-492 4 p.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
6 Downloads (Pure)
2015

Avoiding misidentification of bands in planetary Raman spectra

Harris, L. V., McHugh, M., Hutchinson, I. B., Ingley, R., Malherbe, C., Parnell, J., Olcott Marshall, A. & Edwards, H. G. M., 1 Oct 2015, In : Journal of Raman Spectroscopy. 46, 10, p. 863-872 10 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)
2019

Minerals and microstructure identification using Raman instruments: Evaluation of field and laboratory data in preparation for space mission

Malherbe, C., Hutchinson, I. B., McHugh, M., Lerman, H., Harris, L. V., Ingley, R., Edwards, H. M. G., Parnell, J. & Eppe, G., 5 Aug 2019, In : Journal of Raman Spectroscopy. 11 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2014

Simultaneous and rapid asphaltene and TAN determination for heavy petroleum using an H-cell

Alabi, O., Bowden, S. A. & Parnell, J., 7 Jun 2014, In : Analytical Methods. 6, p. 3651-3660 10 p.

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
5 Downloads (Pure)
2016
Open Access
File
21 Citations (Scopus)
9 Downloads (Pure)

Paradigm shift in determining Neoproterozoic atmospheric oxygen

Blamey, N. J. F., Brand, U., Parnell, J., Spear, N., Lécuyer, C., Benison, K., Meng, F. & Ni, P., 31 Aug 2016, In : Geology. 44, 8, p. 651-654 4 p.

Research output: Contribution to journalArticle

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

Neoproterozoic copper cycling, and the rise of metazoans

Parnell, J. & Boyce, A. J., 6 Mar 2019, In : Scientific Reports. 9, 1, 3638.

Research output: Contribution to journalArticle

Open Access
File
5 Downloads (Pure)

A TEM and EELS study of carbon in a melt fragment from the Gardnos impact structure

Lindgren, P., Hallis, L., Hage, F. S., Lee, M. R., Parnell, J., Plan, A., Doye, A. & MacLaren, I., 1 Nov 2019, In : Meteoritics and Planetary Science. 54, 11, p. 2698-2709 12 p.

Research output: Contribution to journalArticle

Open Access
File
3 Downloads (Pure)