Patrice de Caritat

Geoscience Australia

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Co-Authors

Clemens Reimann

Norwegian Geological Survey

Heikki Niskavaara

Geological Survey of Finland

Galina Kashulina

Kola Science Centre

Viktor Chekushin

Kola Science Centre

Igor Bogatyrev

Kola Science Centre

MÄ

Matti Äyräs

Geological Survey of Finland

Anthony Dosseto

University of Wollongong

Tor Erik Finne

Norwegian Geological Survey

Eric Grunsky

University of Waterloo

Florian Dux

University of Wollongong

Cooperative Institutions

Gemalto (Israel)

Commonwealth Scientific and Industrial Research Organisation

Norwegian Geological Survey

Australian National University

Geological Survey of Sweden

University of Johannesburg

Geological Survey of Finland

TU Bergakademie Freiberg

Australian Resources Research Centre

Mineral Resources

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Intensifying groundwater acidification at Birkenes, southern Norway

Journal of Hydrology (1995)

Patrice de Caritat

Alkalinity

Soil acidification

Acid rain

Acid neutralizing capacity

Ocean Acidification

Deposition

10.1016/0022-1694(95)02695-l

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Citations (16)

Groundwater acidification at Birkenes, southern Norway: Comparing trends of chemical composition of precipitation, throughfall, soilwater and groundwater

Water Air & Soil Pollution (1995)

Patrice de Caritat Dan Aamlid

Soil acidification

Acid rain

Deposition

10.1007/bf00477251

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Citations (2)

Chemical composition of arctic snow: concentration levels and regional distribution of major elements

The Science of The Total Environment (2004)

Patrice de Caritat Gwendy M Hall S.R. Gíslason William Belsey Marlene Braun

10.1016/j.scitotenv.2004.05.031

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Citations (68)

Safe storage and effective monitoring of CO ₂ in depleted gas fields

Proceedings of the National Academy of Sciences (2011)

Charles Jenkins Peter J. Cook Jonathan Ennis‐King James Undershultz Chris Boreham

Carbon capture and storage (CCS) is vital to reduce CO 2 emissions to the atmosphere, potentially providing 20% of the needed reductions in global emissions. Research and demonstration projects are important to increase scientific understanding of CCS, and making processes and results widely available helps to reduce public concerns, which may otherwise block this technology. The Otway Project has provided verification of the underlying science of CO 2 storage in a depleted gas field, and shows that the support of all stakeholders can be earned and retained. Quantitative verification of long-term storage has been demonstrated. A direct measurement of storage efficiency has been made, confirming that CO 2 storage in depleted gas fields can be safe and effective, and that these structures could store globally significant amounts of CO 2 .

10.1073/pnas.1107255108

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Citations (245)

Comment on egusphere-2023-1840

Patrice de Caritat

Abstract. The influence of mineral dust deposition on soil formation in the mountain critical zone was evaluated at six sites in southwestern North America. Passive samplers collected dust for two years, and representative soil and rock were gathered in the vicinity of each dust sampler. All materials (dust, soil, and rock) were analysed to determine their mineralogy (with x-ray diffraction), geochemistry (with ICP-MS), and radiogenic isotope fingerprint (⁸⁷Sr/⁸⁶Sr and ε_Nd). In addition, the grain size distribution of dust and soil samples was determined with laser scattering, and standard soil fertility analysis was conducted on the soil samples. Results reveal that minerals present in the dust, but absent in the local bedrock, are detectable in the soil. Similarly, the geochemistry and isotopic fingerprint of soil samples are more similar to dust than to local bedrock. End-member mixing models evaluating soil as a mixture of dust and rock suggest that the fine fractions of the sampled soils are dominated by dust deposition, with dust contents approaching 100 %. Dust content is somewhat higher in soils over bedrock types more resistant to weathering. These results emphasize the dominant control that mineral dust deposition can exert on pedogenesis on the mountain critical zone.

Bedrock

Deposition

Radiogenic nuclide

Mineral dust

10.5194/egusphere-2023-1840-rc1

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Compositional trends of a Cretaceous foreland basin shale (Belle Fourche Formation, Western Canada Sedimentary Basin): diagenetic and depositional controls

Clay Minerals (1994)

Patrice de Caritat J D Bloch Ian Hutcheon Fred J. Longstaffe

Abstract Compositional trends of the Cenomanian Belle Fourche Formation, a marine shale unit in the Western Canada Sedimentary Basin, have been investigated on a regional scale using bulk-rock geochemistry and mineralogy, clay mineral compositions and oxygen isotope geochemistry of shale and bentonite core samples. Smectitic illite-smectite found in the matrix of immature, hemipelagic samples is compositionally and isotopically consistent with an origin from low-temperature alteration of volcanic ash in the central Western Interior Seaway, where the basin received minimal detrital input. The origin of the more illitic matrix in the deeply buried, western, pro-deltaic shales can be interpreted in terms of either diagenetic ‘illitization’ of a smectitic precursor, or depositional mixing of abundant, detrital, illitic material with minor amounts of ashfall-derived smectite. It is concluded that: (1) documented silicate mineral reactions during deep diagenesis of the Belle Fourche Formation took place in a relatively closed system, with no significant import or export of mobile species at the formation scale; and (2) diagenesis and depositional mixing can have similar effects in terms of bulk-rock and oxygen isotope geochemistry, and mineral compositions and assemblages.

Illite

Cenomanian

Volcanic ash

10.1180/claymin.1994.029.4.09

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Citations (17)

Pedogeochemistry in NE-Brazil — Compared to Australia and Europe

The Science of The Total Environment (2012)

Anne Schucknecht Jörg Matschullat Patrice de Caritat Juscimar da Silva Germano Melo

Subsoil

Topsoil

10.1016/j.scitotenv.2012.08.059

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Citations (16)

A continental-scale geochemical atlas for resource exploration and environmental management: the National Geochemical Survey of Australia

Geochemistry Exploration Environment Analysis (2015)

Patrice de Caritat Michelle Cooper

The National Geochemical Survey of Australia (NGSA) was carried out to bridge a vast knowledge gap about the concentration and distribution of chemical elements at the Earth’s surface in Australia and consequent poor understanding of processes controlling their distribution here. The aim of the project was to contribute to improving exploration for energy and mineral resources through the pre-competitive delivery of a new spatial layer of compositional data and information. Surface (0–10 cm depth) and shallow ( c . 60–80 cm) samples of catchment outlet sediments were collected from 1315 sites located near the outlet of 1186 catchments ( c . 10% of which were sampled in duplicate) from across Australia. The total area covered by the survey was 6.174 million km 2 , or c . 81% of Australia, at an average sampling density of 1 site per c . 5200 km 2 . A number of field parameters (e.g. soil colour, pH), bulk parameters (e.g. electrical conductivity, particle size distribution) and geochemical parameters (i.e. multi-element composition of dry sieved <2 mm and <75 μm grain-size fractions) were determined. The grain-size fractions were analysed to determine (1) total, (2) aqua regia soluble, and (3) Mobile Metal Ion (MMI®) extractable element contents. These data were collated into a spreadsheet and graphically represented as a series of 529 geochemical maps ( http://www.ga.gov.au/ngsa ). These constitute the first continental-scale series of geochemical maps for Australia based on internally consistent, state-of-the-art data pertaining to the same sampling medium collected, prepared and analysed in a uniform and thoroughly documented manner and over a short time period. They are being used to better understand the accumulation, mobility and significance of chemical elements in the near-surface environment. Applications to date and ongoing and future directions are discussed. Supplementary material: Appendices 1-4 of summary statistics are available at http://www.geolsoc.org.uk/SUP18853

Geological survey

10.1144/geochem2014-322

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Citations (63)

International Association of GeoChemistry

Elements (2019)

Patrice de Caritat Stephen E. Grasby Sophie Opfergelt Romain Millot P. Zuddas

and is currently a researcher at the

Association (psychology)

10.2138/gselements.15.6.420

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Citations (0)