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Journal articles on the topic 'Geochemical fingerprinting'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Taraškevičius, Ričardas, Vaidotas Kazakauskas, Saulius Sarcevičius, Rimantė Zinkutė, and Sergej Suzdalev. "Case study of geochemical clustering as a tool for tracing sources of clays for archaeological and modern bricks." Baltica 32, no. 2 (December 1, 2019): 139–55. http://dx.doi.org/10.5200/baltica.2019.2.2.

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The study was conducted using 14 hierarchical clustering ways and combining them with 4 inter-related sets of elements, i.e. the contents of Al, Ba, Ca, Fe, Ga, K, Mg, Mn, Na, Nb, P, Rb, Si, Sr, Th and Ti determined by EDXRF in 44 splits of 10 archaeological and 4 modern bricks, as well as in 38 clay samples from two quarries. Empirical scoring of tree dendrograms of archaeological samples helped to identify Complete Linkage, Weighted Pair Group Average and Ward’s methods as the most suitable for sourcing. Successful identification of geochemical clustering methods for fingerprinting sources of bricks is determined by the intrinsic features of the geochemical composition of stonework or quarries: their similarity, determined by the geochemical peculiarities of clay indicators, such as Al, Rb, Ga, K, Th, Fe, Ti and Nb, and differences, expressed by the elements that are more abundant in sands and silts (Si, Na), carbonates (Ca, Sr, Mg), organic matter (P) and other lithological-mineralogical tracers. It has been found that the mean values of the geochemical composition of the allied objects have much more useful fingerprinting properties. It is strongly recommended for source fingerprinting to select not only typical lithological-mineralogical samples, but also homogeneous sampling sets excluding possible outliers. It has been shown that each raw clay material has its own specific geochemical features. This is an essential useful feature for source fingerprinting using clustering of the objects of interest.

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2

Pearce, Julian A. "Geochemical Fingerprinting of the Earth’s Oldest Rocks." Geology 42, no. 2 (February 2014): 175–76. http://dx.doi.org/10.1130/focus022014.1.

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3

Fernandes, José Ramiro, Leonor Pereira, Pedro Jorge, Luis Moreira, Helena Gonçalves, Luis Coelho, Daniel Alexandre, et al. "Wine fingerprinting using a bio-geochemical approach." BIO Web of Conferences 5 (2015): 02021. http://dx.doi.org/10.1051/bioconf/20150502021.

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4

Christidis, G. E. "Geochemical correlation of bentonites from Milos Island, Aegean, Greece." Clay Minerals 36, no. 3 (September 2001): 295–306. http://dx.doi.org/10.1180/000985501750539409.

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AbstractMajor and trace chemical elements from eleven Lower Pleistocene bentonite deposits from Eastern Milos Island, Aegean, Greece, were used for geochemical fingerprinting of the bentonites, by means of scatter binary and ternary plots and canonical discriminant analysis. The trace elements were selected according to their immobility during bentonite formation and subsequent hydrothermal alteration. The bentonites can be separated into at least four geographically distinct groups, each consisting of materials with similar geochemical affinities. The deposits of each group were derived from protoliths erupted from different volcanic centres, suggesting the existence of at least two distinct volcanic provinces, having rhyolitic and andesitic affinities respectively. Several deposits consist of more than one bentonite horizon, indicating that in some volcanic centres the character of volcanism changed with time. Geochemical fingerprinting, supplemented with geological, mineralogical, and textural evidence, may be useful for correlation and exploration of bentonites, in terrains with complex geological histories.

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Ekpo, B. O., N. Essien, P. A. Neji, and R. O. Etsenake. "Geochemical fingerprinting of western offshore Niger Delta oils." Journal of Petroleum Science and Engineering 160 (January 2018): 452–64. http://dx.doi.org/10.1016/j.petrol.2017.10.041.

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Harmon, Russell S., Richard R. Hark, Chandra S. Throckmorton, Eugene C. Rankey, Michael A. Wise, Andrew M. Somers, and Leslie M. Collins. "Geochemical Fingerprinting by Handheld Laser-Induced Breakdown Spectroscopy." Geostandards and Geoanalytical Research 41, no. 4 (June 27, 2017): 563–84. http://dx.doi.org/10.1111/ggr.12175.

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7

Seitkhaziyev, Y. Sh, R. N. Uteyev, N. D. Sarsenbekov, E. T. Tassemenov, and A. K. Dosmukhambetov. "Geochemical atlas of «Oil fingerprinting» for fields of «Embamunaygas» JSC." Kazakhstan journal for oil & gas industry 2, no. 2 (June 15, 2020): 61–70. http://dx.doi.org/10.54859/kjogi95657.

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This article presents geochemical atlas of oil for 18 fields of Embamunaigas JSC based on the results of fingerprinting carried out in the Central Scientific Research Laboratory (CSRL) of the Atyrau branch of KMG Engineering LLP. This type of geochemical analysis allows to classify oil by chemical composition and provides additional information on productive pay zones and fields. To carry out the study, high-tech equipment and modern tools for data interpretation were applied. The data obtained can be used to deal with issues during field development and orient the areas of prospecting, evaluation and exploration work to promising oil and gas complexes. The article summarizes the results of geochemical studies of Embamunaigas fields and presents further vision for geological exploration.

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Moyo, Stanley, Rob McCrindle, Ntebogeng Mokgalaka, Jan Myburgh, and Munyaradzi Mujuru. "Source apportionment of polycyclic aromatic hydrocarbons in sediments from polluted rivers." Pure and Applied Chemistry 85, no. 12 (December 1, 2013): 2175–96. http://dx.doi.org/10.1351/pac-con-12-10-08.

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Over the past few decades, in response to growing concerns about the impact of polycyclic aromatic hydrocarbons (PAHs) on human health, a variety of environmental forensics and geochemical techniques have emerged for studying organic pollutants. These techniques include chemical fingerprinting, receptor modeling, and compound-specific stable isotope analysis (CSIA). Chemical fingerprinting methodology involves the use of diagnostic ratios. Receptor modeling techniques include the chemical mass balance (CMB) model and multivariate statistics. Multivariate techniques include factor analysis with multiple linear regression (FA/MLR), positive matrix factorization (PMF), and UNMIX. This article reviews applications of chemical fingerprinting, receptor modeling, and CSIA; comments on their uses; and contrasts the strengths and weaknesses of each methodology.

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9

Al-Meshari, Ali A., Sunil L. Kokal, Peter D. Jenden, and Henry I. Halpern. "An Investigation of PVT Effects on Geochemical Fingerprinting of Condensates From Gas Reservoirs." SPE Reservoir Evaluation & Engineering 12, no. 01 (February 26, 2009): 88–95. http://dx.doi.org/10.2118/108441-pa.

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Summary One of the tools used for the characterization of gas reservoirs is the geochemistry of gas condensates. The fingerprinting of gas condensates by gas chromatography, in particular, may provide information regarding reservoir compartmentalization, which can be a major uncertainty at the early-field-appraisal stage. An important concern is the capture of suitable liquid samples. When the flowing bottomhole pressure falls below the dewpoint pressure, for example, condensate will drop out near the wellbore and the captured sample may not be representative of the formation fluid. We conducted two sets of tests simulating the effect(s) of gas-/liquid-phase fractionation on fingerprinting analyses:at different pressures (all below the dewpoint) at reservoir temperature (RT) region in order to simulate dropout of liquids in the near-wellbore area andto investigate the effect of variations in separator temperature and pressure. Geochemical fingerprints obtained on our laboratory-fractionated samples show that condensates obtained from gas wells with flowing bottomhole pressures below dewpoint may not be suitable for compartmentalization studies. Differences in separator pressure and temperature affect the fingerprints of gas condensates, but the effects are small and unlikely to alter conclusions regarding potential fluid-flow barriers. We suggest a number of best practices for the collection and analysis of gas condensates for fingerprinting studies.

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Chang, Xiangchun, and Zengxue Li. "Geochemical Surveillance of the Linnan Oil Field with Oil Fingerprinting." Energy Exploration & Exploitation 28, no. 4 (October 2010): 279–93. http://dx.doi.org/10.1260/0144-5987.28.4.279.

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11

Smith, Victoria C., Nicholas J. G. Pearce, Naomi E. Matthews, John A. Westgate, Michael D. Petraglia, Michael Haslam, Christine S. Lane, Ravi Korisettar, and J. N. Pal. "Geochemical fingerprinting of the widespread Toba tephra using biotite compositions." Quaternary International 246, no. 1-2 (December 2011): 97–104. http://dx.doi.org/10.1016/j.quaint.2011.05.012.

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12

Khatri-Chhetri, Upama, John G. Woods, Ian R. Walker, and P. Jeff Curtis. "Origin identification of migratory pests (European Starling) using geochemical fingerprinting." PeerJ 8 (May 4, 2020): e8962. http://dx.doi.org/10.7717/peerj.8962.

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The European Starling (Sturnidae: Sturnus vulgaris L.) is an invasive bird in North America where it is an agricultural pest. In British Columbia (Canada), the starling population increases in orchards and vineyards in autumn, where they consume and damage ripening fruits. Starlings also cause damage in dairy farms and feedlots by consuming and contaminating food and spreading diseases. Damage can be partly mitigated by the use of scare devices, which can disperse flocks until they become habituated. Large-scale trapping and euthanizing before starlings move to fields and farms could be a practical means of preventing damage, but requires knowledge of natal origin. Within a small (20,831 km2), agriculturally significant portion of south-central British Columbia, the Okanagan-Similkameen region, we used 21 trace elements in bone tissue to discriminate the spatial distribution of juvenile starlings and to reveal the geographic origin of the problem birds in fall. Stepwise discriminant analysis of trace elements classified juveniles to their natal origin (minimum discrimination distance of 12 km) with 79% accuracy. In vineyards and orchards, the majority (55%) of problem birds derive from northern portions of the valley; and the remaining 45% of problem birds were a mixture of local and immigrant/unassigned birds. In contrast, problem birds in dairy farms and feedlots were largely immigrants/unassigned (89%) and 11% were local from northern region of the valley. Moreover, elemental signatures can separate starling populations in the Valley yielding a promising tool for identifying the geographic origin of these migratory birds.

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Shane, Phil, and Ian Smith. "Geochemical fingerprinting of basaltic tephra deposits in the Auckland Volcanic Field." New Zealand Journal of Geology and Geophysics 43, no. 4 (December 2000): 569–77. http://dx.doi.org/10.1080/00288306.2000.9514909.

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14

Savu-Krohn, Christian, Gerd Rantitsch, Peter Auer, Frank Melcher, and Torsten Graupner. "Geochemical Fingerprinting of Coltan Ores by Machine Learning on Uneven Datasets." Natural Resources Research 20, no. 3 (June 25, 2011): 177–91. http://dx.doi.org/10.1007/s11053-011-9142-4.

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15

Kamber, Balz Samuel. "Geochemical fingerprinting: 40 years of analytical development and real world applications." Applied Geochemistry 24, no. 6 (June 2009): 1074–86. http://dx.doi.org/10.1016/j.apgeochem.2009.02.012.

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16

Négrel, Philippe, Martiya Sadeghi, Anna Ladenberger, Clemens Reimann, and Manfred Birke. "Geochemical fingerprinting and source discrimination of agricultural soils at continental scale." Chemical Geology 396 (March 2015): 1–15. http://dx.doi.org/10.1016/j.chemgeo.2014.12.004.

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17

Kostov, Ruslan I., Christo Protochristov, Chavdar Stoyanov, László Csedreki, Alíz Simon, Zita Szikszai, Imre Uzonyi, Bisserka Gaydarska, and John Chapman. "Micro-PIXE Geochemical Fingerprinting of Nephrite Neolithic Artifacts from Southwest Bulgaria." Geoarchaeology 27, no. 5 (July 16, 2012): 457–69. http://dx.doi.org/10.1002/gea.21417.

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18

van Bergen, Pim F., and Marc Gordon. "Production geochemistry: fluids don't lie and the devil is in the detail." Geological Society, London, Special Publications 484, no. 1 (September 25, 2018): 9–28. http://dx.doi.org/10.1144/sp484.1.

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AbstractThe application of production geochemistry techniques has been shown to provide abundant and often low-cost high-value fluid information that helps to maximize and safeguard production. Critical aspects to providing successful data relate to the appropriate sampling strategy and sampling selection which are generally project-aim-specific. In addition, the continuous direct integration of the production geochemistry data with subsurface and surface understanding is pivotal. Examples from two specific areas have been presented including: (a) the effective use of IsoTubes in the production realm; and (b) the application of geochemical fingerprinting primarily based on multidimensional gas chromatography. Mud gas stable carbon isotopes from low-cost IsoTubes have been shown to be very effective in recognizing within-well fluid compartments, as well as recognizing specific hydrocarbon seals in overburden section, including the selective partial seal for only C2+ gas species. With respect to geochemical fingerprinting, examples have been presented related to reservoir surveillance including compartmentalization, lateral and vertical connectivity, as well as fluid movements and fault/baffle breakthrough. The production-related examples focus on fluid allocation within a single well, as well as on its application for pipeline residence times, fluid identification and well testing.

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Harmon, Russell, Christopher Lawley, Jordan Watts, Cassady Harraden, Andrew Somers, and Richard Hark. "Laser-Induced Breakdown Spectroscopy—An Emerging Analytical Tool for Mineral Exploration." Minerals 9, no. 12 (November 20, 2019): 718. http://dx.doi.org/10.3390/min9120718.

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The mineral exploration industry requires new methods and tools to address the challenges of declining mineral reserves and increasing discovery costs. Laser-induced breakdown spectroscopy (LIBS) represents an emerging geochemical tool for mineral exploration that can provide rapid, in situ, compositional analysis and high-resolution imaging in both laboratory and field and settings. We demonstrate through a review of previously published research and our new results how LIBS can be applied to qualitative element detection for geochemical fingerprinting, sample classification, and discrimination, as well as quantitative geochemical analysis, rock characterization by grain size analysis, and in situ geochemical imaging. LIBS can detect elements with low atomic number (i.e., light elements), some of which are important pathfinder elements for mineral exploration and/or are classified as critical commodities for emerging green technologies. LIBS data can be acquired in situ, facilitating the interpretation of geochemical data in a mineralogical context, which is important for unraveling the complex geological history of most ore systems. LIBS technology is available as a handheld analyzer, thus providing a field capability to acquire low-cost geochemical analyses in real time. As a consequence, LIBS has wide potential to be utilized in mineral exploration, prospect evaluation, and deposit exploitation quality control. LIBS is ideally suited for field exploration programs that would benefit from rapid chemical analysis under ambient environmental conditions.

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Wade, Michael J., and Dennis Stainken. "The History of Hydrocarbon Analyses: Whence Has Forensic Geochemical Hydrocarbon Fingerprinting Come." Journal of Environmental Protection 07, no. 03 (2016): 303–11. http://dx.doi.org/10.4236/jep.2016.73026.

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21

Sandoval, Leonardo, Monica Riva, Placido Franco, Ivo Colombo, Roberto Galimberti, and Alberto Guadagnini. "An original deconvolution approach for oil production allocation based on geochemical fingerprinting." Fuel 327 (November 2022): 124715. http://dx.doi.org/10.1016/j.fuel.2022.124715.

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22

Sánchez De la Torre, M., L. M. García‐Simón, F. ‐X Le Bourdonnec, and R. Domingo. "Geochemical fingerprinting of Monegros cherts: Redefining the origin of a prehistoric tracer." Archaeometry 61, no. 6 (June 21, 2019): 1233–45. http://dx.doi.org/10.1111/arcm.12494.

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23

Reutova, Nadezhda, Andrian Seleznev, Ilia Yarmoshenko, Maria Chervyakovskaya, and Maria Streletskaya. "Stable Lead Isotopic Ratios as Indicator of Urban Geochemical Processes." IOP Conference Series: Earth and Environmental Science 906, no. 1 (November 1, 2021): 012098. http://dx.doi.org/10.1088/1755-1315/906/1/012098.

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Abstract The study is aimed to apply the Pb isotope fingerprinting technique for tracing pollution of urban surface deposited sediment (USDS). USDS reflect changes in the geochemical conditions occurring in the environment. USDS samples were collected in residential areas with multistory buildings in Russian cities: Magnitogorsk, Nizhny Tagil, Tyumen, Ufa, and Chelyabinsk. Elements concentrations and stable Pb isotopic ratios were measured in the samples. The reconstruction of the initial geochemical baseline (IGB) relationship between potentially harmful element (PHE) Pb and conservative lithogenic element (CE) Fe was carried out for USDS sample populations in the cities. The IGB reconstruction divided USDS sample populations into the groups of ‘polluted’ and ‘unpolluted’ with Pb samples. Analysis of elements concentrations and Pb isotope ratios in the groups of USDS samples showed different trends in altering geochemical conditions for metals in the surveyed cities. The USDS is characterized by a decrease in the isotope ratios of 206Pb/204Pb and 208Pb/204Pb as a result of soil pollution by vehicles during the period of using leaded gasoline.

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Sarsenbekov, N. D., L. M. Barlybaeva, and A. D. Dosmukhambetov. "Prospects for geochemical analysis of oil in the development of offshore projects." SOCAR Proceedings, no. 3 (September 30, 2020): 58–65. http://dx.doi.org/10.5510/ogp20200300446.

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Genetic types of the studied oil samples based on fingerprinting can help to deal with many problems, including in the development of offshore projects. The application of the innovative technologies of foreign companies by specialists of domestic companies not only helps to solve key issues of finding sources of environmental problems, for example, the source of an oil spill, but also allows one to reduce the cost and time for elimination of such emergencies significantly. This report presents the results of the laboratory's analysis to determine the conditional source of oil spill pollution of the Caspian Sea.

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Dilek, Y., and H. Furnes. "Ophiolite genesis and global tectonics: Geochemical and tectonic fingerprinting of ancient oceanic lithosphere." Geological Society of America Bulletin 123, no. 3-4 (January 27, 2011): 387–411. http://dx.doi.org/10.1130/b30446.1.

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Fernandez-Cortes, A., R. Perez-Lopez, S. Cuezva, J. M. Calaforra, J. C. Cañaveras, and S. Sanchez-Moral. "Geochemical Fingerprinting of Rising Deep Endogenous Gases in an Active Hypogenic Karst System." Geofluids 2018 (December 6, 2018): 1–19. http://dx.doi.org/10.1155/2018/4934520.

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The hydrothermal caves linked to active faulting can potentially harbour subterranean atmospheres with a distinctive gaseous composition with deep endogenous gases, such as carbon dioxide (CO2) and methane (CH4). In this study, we provide insight into the sourcing, mixing, and biogeochemical processes involved in the dynamic of deep endogenous gas formation in an exceptionally dynamic hypogenic karst system (Vapour Cave, southern Spain) associated with active faulting. The cave environment is characterized by a prevailing combination of rising warm air with large CO2 outgassing (>1%) and highly diluted CH4 with an endogenous origin. The δ13CCO2 data, which ranges from −4.5 to −7.5‰, point to a mantle-rooted CO2 that is likely generated by the thermal decarbonation of underlying marine carbonates, combined with degassing from CO2-rich groundwater. A pooled analysis of δ13CCO2 data from exterior, cave, and soil indicates that the upwelling of geogenic CO2 has a clear influence on soil air, which further suggests a potential for the release of CO2 along fractured carbonates. CH4 molar fractions and their δD and δ13C values (ranging from −77 to −48‰ and from −52 to −30‰, respectively) suggest that the methane reaching Vapour Cave is the remnant of a larger source of CH4, which was likely generated by microbial reduction of carbonates. This CH4 has been affected by a postgenetic microbial oxidation, such that the gas samples have changed in both molecular and isotopic composition after formation and during migration through the cave environment. Yet, in the deepest cave locations (i.e., 30 m below the surface), measured concentration values of deep endogenous CH4 are higher than in atmospheric with lighter δ13C values with respect to those found in the local atmosphere, which indicates that Vapour Cave may occasionally act as a net source of CH4 to the open atmosphere.

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Fiantis, Dian, Gusnidar, Brendan Malone, Robert Pallasser, Eric Van Ranst, and Budiman Minasny. "Geochemical fingerprinting of volcanic soils used for wetland rice in West Sumatra, Indonesia." Geoderma Regional 10 (September 2017): 48–63. http://dx.doi.org/10.1016/j.geodrs.2017.04.004.

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Claudia, Bouman, and Schwieters Johannes. "Multicollector ICPMS as tool for isotopic fingerprinting in environmental, biomedical and geochemical studies." Chinese Journal of Geochemistry 25, S1 (March 2006): 71. http://dx.doi.org/10.1007/bf02839872.

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Martyna, Agnieszka, Hans-Eike Gäbler, Andreas Bahr, and Grzegorz Zadora. "Geochemical wolframite fingerprinting – the likelihood ratio approach for laser ablation ICP-MS data." Analytical and Bioanalytical Chemistry 410, no. 13 (April 17, 2018): 3073–91. http://dx.doi.org/10.1007/s00216-018-1007-9.

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Shane, Phil, John Westgate, Martin Williams, and Ravi Korisettar. "New Geochemical Evidence for the Youngest Toba Tuff in India." Quaternary Research 44, no. 2 (September 1995): 200–204. http://dx.doi.org/10.1006/qres.1995.1064.

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AbstractNew geochemical data on tephra samples from a layer present at several archeological sites in India support correlation of this layer to the Youngest Toba Tuff, erupted from northern Sumatra about 74,000 yr ago. The data show that the Indian tephra layer is not a correlative of older tephra erupted from Toba, as has been suggested on the basis of artifact assemblages. Previously published geochemical data on the Indian tephra beds was based on bulk ash samples containing mineral and clay contaminants, and the resulting variability in analyses did not allow identification or discrimination of individual eruptive events. Our new data were collected on individual glass shards and small, purified glass separates which have greater resolving power in fingerprinting. Acheulian and Paleolithic artifacts found at some of the Indian tephra sites do not reflect the antiquity of the tephra bed, as they occur in fluvial sediments and may be reworked.

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Greenough, John D., Leanne M. Mallory-Greenough, and James Baker. "Orthopyroxene, augite, and plagioclase compositions in dacite: application to bedrock sourcing of lithic artefacts in southern British Columbia." Canadian Journal of Earth Sciences 41, no. 6 (June 1, 2004): 711–23. http://dx.doi.org/10.1139/e04-012.

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Extremely fine-grained, hypocrystalline, microporphyritic dacite (whole-rock SiO2 = 6570 oxide wt.%), called "glassy basalt" by archaeologists, was commonly used to manufacture lithic artefacts found in the British Columbia (B.C.) Interior. Geochemical fingerprinting of dacite minerals can help identify the geologic source of these artefacts. Multiple (~300) mineral analyses show that mafic orthopyroxene (En6580), plagioclase (An3070), augite (Wo3045, En4045, Fs1015), and olivine (~Fo85) (in that order) represent the most abundant and commonly occurring microphenocrysts. Relative abundances vary among sources. Clustering of averaged mineral data reveals at least five distinct dacite sources for lithic artefacts in the B.C. Interior. Discriminant analysis separates individual mineral analyses according to these five areas with ~ 90% efficiency and provides functions for "sourcing" new artefacts in the future. Two sites represent "quarry" locations and their scope (e.g., geographic area ≥ 4 km2, archaeological stratigraphic depth locally ≥ 2 m at Cache Creek) implies prolonged use and trade. However, fingerprinting suggests that in the B.C. Interior, tools were made from local dacite. Mineral fingerprinting uses small (~0.1 g) samples, which is important when analyzing valuable artefacts. Hypocrystalline, "knappable," microporphyritic dacite is probably common around the Pacific due to Cenozoic subduction. Thus, mineral-based sourcing could have wider application outside of western Canada.

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Ouzounis, Athanasios G., and George A. Papakostas. "Machine Learning in Discriminating Active Volcanoes of the Hellenic Volcanic Arc." Applied Sciences 11, no. 18 (September 8, 2021): 8318. http://dx.doi.org/10.3390/app11188318.

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Identifying the provenance of volcanic rocks can be essential for improving geological maps in the field of geology and providing a tool for the geochemical fingerprinting of ancient artifacts like millstones and anchors in the field of geoarchaeology. This study examines a new approach to this problem by using machine learning algorithms (MLAs). In order to discriminate the four active volcanic regions of the Hellenic Volcanic Arc (HVA) in Southern Greece, MLAs were trained with geochemical data of major elements, acquired from the GEOROC database, of the volcanic rocks of the Hellenic Volcanic Arc (HVA). Ten MLAs were trained with six variations of the same dataset of volcanic rock samples originating from the HVA. The experiments revealed that the Extreme Gradient Boost model achieved the best performance, reaching 93.07% accuracy. The model developed in the framework of this research was used to implement a cloud-based application which is publicly accessible at This application can be used to predict the provenance of a volcanic rock sample, within the area of the HVA, based on its geochemical composition, easily obtained by using the X-ray fluorescence (XRF) technique.

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Brazelton, William J., Penny L. Morrill, Natalie Szponar, and Matthew O. Schrenk. "Bacterial Communities Associated with Subsurface Geochemical Processes in Continental Serpentinite Springs." Applied and Environmental Microbiology 79, no. 13 (April 12, 2013): 3906–16. http://dx.doi.org/10.1128/aem.00330-13.

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ABSTRACTReactions associated with the geochemical process of serpentinization can generate copious quantities of hydrogen and low-molecular-weight organic carbon compounds, which may provide energy and nutrients to sustain subsurface microbial communities independently of the photosynthetically supported surface biosphere. Previous microbial ecology studies have tested this hypothesis in deep sea hydrothermal vents, such as the Lost City hydrothermal field. This study applied similar methods, including molecular fingerprinting and tag sequencing of the 16S rRNA gene, to ultrabasic continental springs emanating from serpentinizing ultramafic rocks. These molecular surveys were linked with geochemical measurements of the fluids in an interdisciplinary approach designed to distinguish potential subsurface organisms from those derived from surface habitats. The betaproteobacterial genusHydrogenophagawas identified as a likely inhabitant of transition zones where hydrogen-enriched subsurface fluids mix with oxygenated surface water. TheFirmicutesgenusErysipelothrixwas most strongly correlated with geochemical factors indicative of subsurface fluids and was identified as the most likely inhabitant of a serpentinization-powered subsurface biosphere. Both of these taxa have been identified in multiple hydrogen-enriched subsurface habitats worldwide, and the results of this study contribute to an emerging biogeographic pattern in whichBetaproteobacteriaoccur in near-surface mixing zones andFirmicutesare present in deeper, anoxic subsurface habitats.

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Osman, Ola, Oluwajinmi Daniel Aina, and Farrukh Ahmad. "Chemical fingerprinting of saline water intrusion into sewage lines." Water Science and Technology 76, no. 8 (June 23, 2017): 2044–50. http://dx.doi.org/10.2166/wst.2017.374.

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High salinity in sewage sludge can affect not only the operation of wastewater treatment plants (WWTPs) but also the quality of treated water generated, thereby limiting its downstream reuse. Using data on geochemical parameters, both for the central WWTP in Abu Dhabi, UAE, and literature values for potential regional saline water sources (e.g., shallow groundwater and regional Arabian Gulf seawater), a variety of chemical fingerprinting diagnostic ratios were calculated and plotted in order to determine the source of salinity in the municipal sewage. Data were compared with data from a regional WWTP that was not impacted by salinity. Monitoring data demonstrated persistently elevated levels of salinity in the municipal wastewater arriving at the central WWTP from the city. Dilution/concentration analysis using a conductivity vs. chloride plot showed both potential sources, i.e. Arabian Gulf seawater and coastal hypersaline groundwater, as feasible sources of wastewater salinization. Further diagnostic analysis using a Panno Plot indicated that coastal groundwater was the only likely source of salinization of municipal sewage. Additional confirmation of the identity of the source and the extent of mixing using different lines of evidence like stable isotope ratios is recommended for future study.

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Marcaida, Mae, Margaret T. Mangan, Jorge A. Vazquez, Marcus Bursik, and Marsha I. Lidzbarski. "Geochemical fingerprinting of Wilson Creek formation tephra layers (Mono Basin, California) using titanomagnetite compositions." Journal of Volcanology and Geothermal Research 273 (March 2014): 1–14. http://dx.doi.org/10.1016/j.jvolgeores.2013.12.008.

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Harmon, Russell S., Jeremiah Remus, Nancy J. McMillan, Catherine McManus, Leslie Collins, Jennifer L. Gottfried, Frank C. DeLucia, and Andrzej W. Miziolek. "LIBS analysis of geomaterials: Geochemical fingerprinting for the rapid analysis and discrimination of minerals." Applied Geochemistry 24, no. 6 (June 2009): 1125–41. http://dx.doi.org/10.1016/j.apgeochem.2009.02.009.

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37

Nosrati, Kazem, Zeynab Fathi, and Adrian L. Collins. "Fingerprinting sub-basin spatial suspended sediment sources by combining geochemical tracers and weathering indices." Environmental Science and Pollution Research 26, no. 27 (August 2, 2019): 28401–14. http://dx.doi.org/10.1007/s11356-019-06024-x.

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38

Batista, P. V. G., J. P. Laceby, and O. Evrard. "How to evaluate sediment fingerprinting source apportionments." Journal of Soils and Sediments 22, no. 4 (February 9, 2022): 1315–28. http://dx.doi.org/10.1007/s11368-022-03157-4.

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Abstract Purpose Evaluating sediment fingerprinting source apportionments with artificial mixtures is crucial for supporting decision-making and advancing modeling approaches. However, artificial mixtures are rarely incorporated into fingerprinting research and guidelines for model testing are currently lacking. Here, we demonstrate how to test source apportionments using laboratory and virtual mixtures by comparing the results from Bayesian and bootstrapped modeling approaches. Materials and methods Laboratory and virtual mixtures (n = 79) with known source proportions were created with soil samples from two catchments in Fukushima Prefecture, Japan. Soil samples were sieved at 63 µm and analyzed for colorimetric and geochemical parameters. The MixSIAR Bayesian framework and a bootstrapped mixing model (BMM) were used to estimate source contributions to the artificial mixtures. In addition, we proposed and demonstrated the use of multiple evaluation metrics to report on model uncertainty, residual errors, performance, and contingency criteria. Results and discussion Overall, there were negligible differences between source apportionments for the laboratory and virtual mixtures, for both models. The comparison between MixSIAR and BMM illustrated a trade-off between accuracy and precision in the model results. The more certain MixSIAR solutions encompassed a lesser proportion of known source values, whereas the BMM apportionments were markedly less precise. Although model performance declined for mixtures with a single source contributing greater than 0.75 of the material, both models represented the general trends in the mixtures and identified their major sources. Conclusions Virtual mixtures are as robust as laboratory mixtures for assessing fingerprinting mixing models if analytical errors are negligible. We therefore recommend to always include virtual mixtures as part of the model testing process. Additionally, we highlight the value of using evaluation metrics that consider the accuracy and precision of model results, and the importance of reporting uncertainty when modeling source apportionments.

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Damaschke, Magret, Shane J. Cronin, Katherine A. Holt, Mark S. Bebbington, and Alan G. Hogg. "A 30,000 yr high-precision eruption history for the andesitic Mt. Taranaki, North Island, New Zealand." Quaternary Research 87, no. 1 (January 2017): 1–23. http://dx.doi.org/10.1017/qua.2016.11.

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AbstractTephra layers from 11 sediment cores were examined from a series of closely spaced lake and peat sites, which form an arc around the andesitic stratovolcano Mt. Taranaki, North Island, New Zealand. A new high-resolution composite tephra-deposition record was built, encompassing at least 228 tephra-producing eruptions over the last 30 cal ka BP and providing a basis for understanding variations in magnitude and frequency of explosive volcanism at a typical andesitic volcano. Intersite correlation and geochemical fingerprinting of almost all tephra layers was achieved using electron microprobe–determined titanomagnetite phenocryst and volcanic glass shard compositions, in conjunction with precise age determination of the tephra layers based on continuous down-core radiocarbon dating. Compositional variation within these data allowed the overall eruption record to be divided into six individual tephra sequences. This geochemical/stratigraphic division provides a broad basis for widening correlation to incomplete tephra sequences, with confident correlations to specific, distal Taranaki-derived tephra layers found as far as 270 km from the volcano. Furthermore, this tephrostratigraphical record is one of the most continuous and detailed for an andesitic stratovolcano. It suggests two general patterns of magmatic evolution, characterized by intricate geochemical variations indicating a complex storage and plumbing system beneath the volcano.

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Sellier, Virginie, Oldrich Navratil, John Patrick Laceby, Cédric Legout, Anthony Foucher, Michel Allenbach, Irène Lefèvre, and Olivier Evrard. "Combining colour parameters and geochemical tracers to improve sediment source discrimination in a mining catchment (New Caledonia, South Pacific Islands)." SOIL 7, no. 2 (November 22, 2021): 743–66. http://dx.doi.org/10.5194/soil-7-743-2021.

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Abstract. Tracing the origin of sediment is needed to improve our knowledge of hydro-sedimentary dynamics at the catchment scale. Several fingerprinting approaches have been developed to provide this crucial information. In particular, spectroscopy provides a rapid, inexpensive and non-destructive alternative technique to the conventional analysis of the geochemical properties. Here, we investigated the performance of four multi-proxy approaches based on (1) colour parameters, (2) geochemical properties, (3) colour parameters coupled with geochemical properties and (4) the entire visible spectrum to discriminate sediment source contributions in a mining catchment of New Caledonia. This French archipelago located in the south-west Pacific Ocean is the world's sixth largest producer of nickel. Open-cast nickel mining increases soil degradation and the downstream transfer of sediments in river systems, leading to the river system siltation. The sediment sources considered in the current research were therefore sediment eroded from mining sub-catchments and non-mining sub-catchments. To this end, sediment deposited during two cyclonic events (i.e. 2015 and 2017) was collected following a tributary design approach in one of the first areas exploited for nickel mining on the archipelago, the Thio River catchment (397 km2). Source (n=24) and river sediment (n=19) samples were analysed by X-ray fluorescence and spectroscopy in the visible spectra (i.e. 365–735 nm). The results demonstrated that the individual sediment tracing methods based on spectroscopy measurements (i.e. (1) and (4)) were not able to discriminate sources. In contrast, the geochemical approach (2) did discriminate sources, with 83.1 % of variance in sources explained. However, it is the inclusion of colour properties in addition to geochemical parameters (3) which provides the strongest discrimination between sources, with 92.6 % of source variance explained. For each of these approaches ((2) and (3)), the associated fingerprinting properties were used in an optimized mixing model. The predictive performance of the models was validated through tests with artificial mixture samples, i.e. where the proportions of the sources were known beforehand. Although with a slightly lower discrimination potential, the “geochemistry” model (2) provided similar predictions of sediment contributions to those obtained with the coupled “colour + geochemistry” model (3). Indeed, the geochemistry model (2) showed that mining tributary contributions dominated the sediments inputs, with a mean contribution of 68 ± 25 % for the 2015 flood event, whereas the colour + geochemistry model (3) estimated that the mining tributaries contributed 65 ± 27 %. In a similar way, the contributions of mining tributaries were evaluated to 83 ± 8 % by the geochemistry model (2) versus 88 ± 8 % by the colour + geochemistry model (3) for the 2017 flood event. Therefore, the use of these approaches based on geochemical properties only (2) or of those coupled to colour parameters (3) was shown to improve source discrimination and to reduce uncertainties associated with sediment source apportionment. These techniques could be extended to other mining catchments of New Caledonia but also to other similar nickel mining areas around the world.

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Smith, Victoria C., P. Shane, and I. E. M. Smith. "Tephrostratigraphy and geochemical fingerprinting of the Mangaone Subgroup tephra beds, Okataina Volcanic Centre, New Zealand." New Zealand Journal of Geology and Geophysics 45, no. 2 (June 2002): 207–19. http://dx.doi.org/10.1080/00288306.2002.9514969.

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De Deckker, Patrick, Raeid M. M. Abed, Dirk de Beer, Kai-Uwe Hinrichs, Tadhg O'Loingsigh, Enno Schefuß, Jan-Berend W. Stuut, Nigel J. Tapper, and Sander van der Kaars. "Geochemical and microbiological fingerprinting of airborne dust that fell in Canberra, Australia, in October 2002." Geochemistry, Geophysics, Geosystems 9, no. 12 (December 2008): n/a. http://dx.doi.org/10.1029/2008gc002091.

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Cooper, Richard J., and Tobias Krueger. "An extended Bayesian sediment fingerprinting mixing model for the full Bayes treatment of geochemical uncertainties." Hydrological Processes 31, no. 10 (March 26, 2017): 1900–1912. http://dx.doi.org/10.1002/hyp.11154.

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Hu, Zeng, Fang, Qi, Yin, Chen, Li, and Zhu. "Geochemical Study of Detrital Apatite in Sediment from the Southern Okinawa Trough: New Insights into Sediment Provenance." Minerals 9, no. 10 (October 8, 2019): 619. http://dx.doi.org/10.3390/min9100619.

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Detrital apatite is a promising accessory mineral for reliable fingerprinting of the protolith composition of detrital sediment. Here, we present the geochemical compositions of detrital apatites from four sections of a high-resolution (~140 cm/kyr) sedimentary archive from the southern Okinawa Trough (SOT) for constraining sediment source rock types and establishing changes in provenance. A series of diagrams based on the geochemical data show that apatites in Section 1 derived mainly from mafic/intermediate rocks, while apatites in the three younger sections largely originated from mafic/intermediate rocks and acid rocks. Further, the four sections included a few contributions of apatites from alkaline rocks and metamorphic rocks. Through a comprehensive analysis of controlling factors and regional stratigraphy in the study area, we concluded that sediments in the SOT are the weathering/erosion products of sedimentary and meta-sedimentary rocks in the western and northeastern Taiwan Island, with ultimate sources containing a wide variety of rock types. The sediment from rivers in eastern Taiwan did not significantly contribute to deposition in the SOT. Apatites in Sections 2–4 showed strong geochemical similarity but differed from those in Section 1, indicating that the types of weathered/eroded sedimentary rocks in the weathering profile of river drainage basins of Taiwan Island changed in Section 2 (2010–1940 cal. yr BP) and have remained stable since then.

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RAY, DAVID C., ADRIAN V. J. COLLINGS, GRAHAM J. WORTON, and GAVIN JONES. "Upper Wenlock bentonites from Wren's Nest Hill, Dudley: comparisons with prominent bentonites along Wenlock Edge, Shropshire, England." Geological Magazine 148, no. 4 (April 19, 2011): 670–81. http://dx.doi.org/10.1017/s0016756811000288.

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AbstractThe upper Wenlock Series (Homerian Stage) of the northern Midland Platform, England, contains numerous volcanic bentonite clay layers. At Wren's Nest Hill, Dudley, 15 bentonites have been investigated and comparisons with the type-Wenlock have been made by means of two key sections along Wenlock Edge, Shropshire. In total 22 bentonites have been investigated and their clay and sand-grade mineralogies determined. Rare earth element (REE) and yttrium concentrations of apatite grains contained within ten of the bentonites have been established allowing geochemical fingerprinting as an indication of provenance of source magmas and identification of geochemical marker beds. Based on the analysis of REE and yttrium concentrations it seems likely that the majority of these bentonites originated from a granodiorite magmatic source. Comparisons with published Llandovery and lower Wenlock age bentonites indicate generally more enrichment in light REEs relative to heavy REEs. In addition, close geochemical similarities between bentonites along Wenlock Edge and at Wren's Nest Hill strongly argue for their presence as precise stratigraphic equivalents within the upper Much Wenlock Limestone Formation. These correlations are further supported by geophysical data from borehole wire-line logs across the West Midlands. Finally, a chemically distinct mid-Homerian episode of volcanism is identified and represents a potentially important marker interval between the study area and other similarly aged bentonites reported from the Island of Gotland, Sweden.

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Mallory-Greenough, Leanne M., and John D. Greenough. "Whole-rock trace-element analyses applied to the regional sourcing of ancient basalt vessels from Egypt and Jordan." Canadian Journal of Earth Sciences 41, no. 6 (June 1, 2004): 699–709. http://dx.doi.org/10.1139/e04-013.

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"Fingerprinting" lithic artefacts using whole-sample geochemistry is a simple, inexpensive, technique that can supply archaeologists with important provenance and trade information. To demonstrate its utility, it is applied here to basalt vessels produced by Near East societies encompassing the millennia and geographic areas where civilization arose and writing developed. Using published whole-sample geochemical data for bedrock samples, exploratory statistical techniques show that Jordanian and Egyptian basalts are fundamentally distinct. Petrogenetically significant plots (VTi) and element ratios (Rb/Sr, Nb/Y, Sr/Zr) efficiently "fingerprint" and separate Jordanian and Egyptian bedrock basalt samples and Levantine and Egyptian basaltic artefacts. The results show that most basalt artefacts were manufactured and used within the geographic regions and culture areas where they were produced. However, a representative sample of some typologically distinct basaltic artefacts from Maadi, Egypt, geochemically resembles Palestinian basalts and quantitatively confirms archaeological evidence that trade interactions between Egyptian and Jordanian Neolithic societies were established early. Thus, knowledge of the bedrock source of raw materials used in the manufacture of basaltic artefacts is useful for inferring trade and social interaction between and within these cultures.

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Westrich, Joseph T., Anthony M. Fuex, Patricia M. O'Neal, and Henry I. Halpern. "Evaluating Reservoir Architecture in the Northern Gulf of Mexico With Oil and Gas Chemistry." SPE Reservoir Evaluation & Engineering 2, no. 06 (December 1, 1999): 514–19. http://dx.doi.org/10.2118/59518-pa.

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Summary A post-development study was carried out at Bullwinkle Field in the Gulf of Mexico to develop and test geochemical methods for evaluating reservoir architecture, establish confidence in reservoir geochemistry technology, and provide a framework for surveillance work at Bullwinkle. In line with previous work, this study shows how fluid composition data can be used to obtain improved reservoir architecture interpretations. Geochemistry is a low-cost direct approach for determining reservoir architecture. When data are integrated with results from other tools and techniques, the final result is to improve decision making and production efficiency for both development and redevelopment projects. Introduction Throughout the life of an oil or gas field—from the time the count and placement of the first development wells are planned, to the last water-flood or sidetract/recompletion—a critical operational issue is the continuity and compartmentalization of reservoir units. Over the last 9 years, a number of papers have demonstrated that a variety of geochemical tools can be used to better define and constrain reservoir architecture interpretations,1–4 especially when resulting data are integrated with other geological, geophysical, and engineering information.1,5-7 The basic tenant applied in petroleum fingerprinting studies is deceptively simple—fluids in single reservoirs are compositionally homogeneous, while fluids in separate compartments show some degree of compositional heterogeneity. Differences are more important than similarities—much like pressure data, compositional homogeneity supports the idea of a continuous well-connected reservoir, although it usually does not prove it.5 Interpretations are complicated by a number of issues, including compositional grading, reservoir filling history, and insufficient time for mixing, but many published field studies support this general model.1-4,6,7 Geochemical fingerprinting technology has a number of advantages: as opposed to many static tools and methods, geochemical fluid data can be a direct indicator of fluid-flow barriers, much like PVT and production data,6,7,12 geochemical tools/methods are inexpensive, and most provide fast turn-around times, and the ability to work with core samples6–8 provides the opportunity for greater coverage, especially in areas with multiple stacked pay such as the Gulf of Mexico. Despite the applicability and promise of this new technology, its true value is not widely recognized in the industry. Consequently, it is not applied as much as it could be in appraisal, development, and re-development projects. An important reason for this lack of recognition/use is that a variety of issues and problems need to be addressed to increase our level of understanding about this technology. We need to know when it works, when it does not and why. Only then will this technology gain credibility and be used to its full potential. To help alleviate this situation, a geochemical study of the Bullwinkle Field was carried out to: identify the optimum analytical techniques and interpretation methods for application studies in the deepwater Gulf of Mexico; understand how to interpret fingerprinting data in the presence of compositional grading; increase Shell's confidence in reservoir geochemistry technology through a series of well-calibrated case studies; and participate in surveillance work aimed at planning subsequent field redevelopment work for the field. Study Area and Methods Bullwinkle field, in Green Canyon blocks 65 and 109 (Fig. 1), is considered a combination stratigraphic/salt-flank trap.9,10 The lower Pleistocene "J" sand package, which contains over 90% of the reserves at Bullwinkle, was mapped originally as four separate pay intervals (J1 through J4).9 Of these, the J2 sand (Fig. 2) contains the bulk of the recoverable reserves and has an estimated column height of about 1600 ft. Partly because of its size and importance, the J2 pay zone was the primary focus of this study. As discussed in this paper, the J2 pay interval is divided into the J2-RA and J2-RB reservoirs (Fig. 2). A comprehensive set of oils (n=18) and associated (dissolved) gas (n=16) samples, taken from nearly all of the initial oil producing wells, were analyzed in this study.

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Utting, Benjamin. "Geochemical fingerprinting of Pleistocene stone tools from the Tràng An Landscape Complex, Ninh Bình Province, Vietnam." PLOS ONE 17, no. 6 (June 22, 2022): e0269658. http://dx.doi.org/10.1371/journal.pone.0269658.

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Raw material analyses of prehistoric stone tool assemblages can reveal insight into mobility and exchange patterns in hunter-gatherer populations by reconstructing the circulation of stone throughout ancient landscapes. In Pleistocene Southeast Asia, stone tools are generally thought to have been fashioned from easily accessible local raw materials. However, despite the consistent presence of stone tools made of igneous raw material at prehistoric sites throughout the Tràng An Landscape Complex in northern Vietnam, there are no sources of igneous raw material in the immediate vicinity. This paper presents the results of geochemical sourcing analysis of late Pleistocene igneous stone tools from Tràng An: the first analysis of its type in mainland Southeast Asia. The results shed light on mobility and raw material provisioning strategies in Pleistocene mainland Southeast Asian hunter-gatherer populations and raise questions surrounding the relationship between technological organization, raw material, and expediency in Southeast Asian stone tool assemblages.

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Schmickler, B., D. E. Jacob, and S. F. Foley. "Eclogite xenoliths from the Kuruman kimberlites, South Africa: geochemical fingerprinting of deep subduction and cumulate processes☆." Lithos 75, no. 1-2 (July 2004): 173–207. http://dx.doi.org/10.1016/j.lithos.2003.12.012.

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Cutten, H. N. C., R. J. Korsch, and B. P. Roser. "Using geochemical fingerprinting to determine transpressive fault movement history: Application to the New Zealand Alpine Fault." Tectonics 25, no. 4 (August 2006): n/a. http://dx.doi.org/10.1029/2005tc001842.

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