Готові списки джерел за темами / Geochemical fingerprinting

Добірка наукової літератури з теми "Geochemical fingerprinting"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Geochemical fingerprinting"

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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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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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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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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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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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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Дисертації з теми "Geochemical fingerprinting"

Meara, Rhian Hedd. "Geochemical fingerprinting of Icelandic silicic Holocene tephra layers." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/5834.

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The overall aim of this research project has been to develop a reference dataset of 19 Holocene silicic Icelandic tephra layers sourced from the Torfajökull, Askja, Katla, Öræfajökull and Hekla volcanic systems. The dataset comprises geochemical data (including major, trace and rare earth element data for bulk and glass phases collected by XRF, electron microprobe, ion probe and laser ablation ICP-MS) and physical data (including sedimentary logs, field photographs, distribution maps and GPS localities of reference sections). Results indicate that Icelandic volcanic systems show unique geochemical signatures which result from the systems proximity to the active rifting zone and the proposed upwelling mantle plume that underlies the island. Within individual volcanic systems, eruptions produce tephra with distinct geochemical characteristics, which allow for the independent confirmation of tephra identity. The identification and discrimination of tephra layers can in some cases be achieved using major element chemistry (e.g. Hekla, H1104 – H5) while other tephra layers can only be discriminated using trace element chemistry (e.g. Torfajökull, Landnám and Gràkolla). Certain tephra layers however show near-identical geochemistry and therefore discrimination is not possible (e.g. Hekla, HA, HB, HC, HM, HN, HX, HY, HZ) without the incorporation of other proxy data. Icelandic micro-tephra horizons are identified in soil, lacustrine and marine sedimentary sequences and are used for dating and correlation in Quaternary studies. Data collected for this project will facilitate reliable data comparison and tephra identification between proximal and distal localities across the North Atlantic region. The data may also contribute to the debate regarding the formation of silicic rocks within Iceland, particularly with regard to the Hekla central volcano. The geochemical data collected for this thesis shows distinct age-dependant geochemical sub-groups suggesting temporal sub-surface relocation of the Hekla magma source.

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Jones, Christina. "Trace element fingerprinting in the Gulf of Mexico volcanic ash." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/863.

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Westfield, Isaac T. Dworkin Steve I. "Geochemical fingerprinting of sediments on the Pear Tree Bottom Reef, near Runaway Bay, Jamaica." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5289.

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Gartmair, Gisela Sandra. "Integrating Zircon Grain Shape Analysis with Detrital Mineral Geochronology and Geochemical Fingerprinting, Eucla Basin, Australia." Thesis, Curtin University, 2022. http://hdl.handle.net/20.500.11937/89462.

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Southern Australia's Eucla Basin is a world famous heavy mineral sands province. Little is understood about the basin's primary sediment provenance because of non-uniqueness in U-Pb age and Hf isotope signatures of likely source regions. This research integrates a geochronology-geochemistry-grain shape triple-characterisation approach to constrain sediment provenance, transportation, and recycling of Eucla Basin heavy mineral sands. The combined approach adds new insights and identifies the basin's underlying crystalline basement as the dominant heavy mineral source.

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Chetty, Deshenthree. "Geochemical fingerprinting of carbonate wall rock alteration at major base metal sulphide deposits in the Otavi Mountain Land, Namibia." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/9555.

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Bibliography: leaves 134-147.
The Otavi Mountain Land is a base metal ore province in which base metal sulphide deposits are hosted by platform carbonates in a foreland fold-and-thrust belt on the northern edge of the PanAfrican Damara Belt. Deposits have been classified as the Berg Aukas- and Tsumeb- types, based on differences in ore association, stratigraphic position and geochemistry of ores and gangue carbonates. Mineralisation at each of these deposits is accompanied by carbonate alteration in the form of dolomite and calcite veins, carbonate recrystallisation, calcitisation and carbonate silicification. Optical cathodoluminescence imaging, electron probe micro analysis, X-ray ﬂuorescence spectrometry, X-ray diffraction, high performance ion chromatography, proton probe micro analysis, stable isotope techniques, and ﬂuid inclusion microthermometry were employed (i) to differentiate between carbonate generations associated with the alteration and mineralisation, particularly for the more economic Tsumeb-type deposits, represented by Tsumeb and Kombat, as well as in comparing between Berg Aukas- and Tsumeb-type deposits; (ii) to set constraints on the ﬂuids effecting such alteration and associated mineralisation; (iii) to determine the relationship of the Khasib Springs deposit, for which little geochemical data exists, to deposits of the Tsumeb-type, and (iv) to identify those parameters which are diagnostic of Tsumeb-type mineralisation.

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K, C. Upama. "Tracing the origin of migratory pests using geochemical fingerprinting : application to European starling in the Okanagan Valley of British Columbia, Canada." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63781.

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The European starling (EUST) (Sturnidae: Sturnus vulgaris L.) is an invasive bird in North America where it is an agricultural pest. In British Columbia (Canada), the EUST population increases in orchards and vineyards in autumn, coinciding with ripening fruits. Starlings also create damage in dairy farms and feedlots by eating and contaminating food, and spreading diseases. Damage can be partly mitigated by the use of scare deterrents. However, scare techniques mainly serve to divert flocks until they become acclimated. Large-scale trapping and euthanizing before they move to fields and farms is the most 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 Valley, I employed analyses of 21 trace elements in bone tissue to discriminate the spatial distribution of juvenile EUST and to reveal the geographic origin of the problem birds. Stepwise discriminant analysis of trace elements classified juveniles from 64-79 % accurately to their natal origin, including sites that are 12 km apart. The elemental fingerprint of juveniles collected in the same area was different in two consecutive years (2015 and 2016). In both years, the majority of problem birds (55% in 2015 and 79 % in 2016) caught in vineyards and orchards were derived from the North Okanagan. In contrast, 89% of problem birds caught at dairy farms and feedlots were not from Okanagan and 11% were local in 2015; 100% of problem birds were local in 2016. It is unlikely that starlings from outside the region were misidentified as Okanagan Valley starlings because the geochemical fingerprints of those outside of the valley are very distinct. Thus, elemental signatures can separate populations with a high degree of spatial accuracy within several 10s of km, yielding a promising tool for identifying the geographic origin of migratory birds even over small geographic scales. These findings suggested that further control of starlings in vineyards and orchards, be targeted to the northern and southern regions of the valley; control in dairy farms and feedlots will require an expansion of the trapping program outside the region.
Irving K. Barber School of Arts and Sciences (Okanagan)
Earth and Environmental Sciences, Department of (Okanagan)
Graduate

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Williams, Thomas. "Investigating the circulation of Southern Ocean deep water masses over the last 1.5 million years by geochemical fingerprinting of marine sediments." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/274006.

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The Southern Ocean (SO) is a critical component in the global ocean conveyor. As the only conduit linking the Atlantic, Indian and Pacific Oceans, as well as an important region of upwelling and water mass formation, it is thought to have played a key role in modulating Earth’s past climate. Changes in the circulation of SO deep and bottom waters over the last 1.5 million years are investigated using stable carbon isotope $δ^{13}C$ measurements made on the tests of the benthic foraminfer Cibicidoides ($δ^{13}C_{b}$), and the rare earth element concentrations and Neodymium isotope ($ɛ_{Nd}$) values of marine sediments and their authigenic ferromanganese coatings. Being a proxy for past seawater nutrient contents, $δ^{13}C_{b}$ provides important insights into both past ocean circulation and the potential storage of remineralised organic carbon within the deep ocean, while simultaneously providing information on the past ventilation state of the deep ocean interior. As seawater $ɛ_{Nd}$ remains unaffected by biological fractionation or air-sea exchange processes, reconstructions of past deep and bottom water $ɛ_{Nd}$ provides a tool with which to study past changes in the circulation and mixing of these water masses. A suite of previously published late Holocene (0-6 ka) and Last Glacial Maximum (LGM; 18-24 ka) $δ^{13}C_{b}$ data are used alongside newly acquired $δ^{13}C_{b}$ data from the Amundsen Sea in the eastern Pacific sector of the SO to investigate past changes in the pattern of circum-Antarctic seawater carbon isotope composition. The $δ^{13}C$ signature of deep and bottom waters was much more heterogenous during the LGM than the late Holocene, with negative $δ^{13}C$ excursions occurring within the Atlantic and Indian sectors of the SO below c. 2-3 km water depth. Some of this negative $δ^{13}C$ signal was advected through the SO to the Pacific sector, but this appears to have been restricted by bathymetric barriers within the SO. New $δ^{13}C_{b}$ data spanning the last 800 ka from the Amundsen Sea are presented and suggest differing modes of bottom water formation in the Atlantic vs Pacific sectors of the SO during glacial periods of the last 800 ka. An authigenic $ɛ_{Nd}$ record measured on sediments from a core located in the deep Indian Ocean is used to investigate the palaeocirculation history of modified Circumpolar Deep Water (mCDW) within the Indian Ocean during the last 1.5 million years. Shifts towards more radiogenic $ɛ_{Nd}$ values during glacial periods are interpreted as reflecting a decreased entrainment of deep waters sourced in the North Atlantic (Northern Component Water, NCW) within CDW, which led to a reduced advection of an unradiogenic $ɛ_{Nd}$ NCW signal to the core site. $ɛ_{Nd}$ and REE measurements made on sediments from two cores located on the Pacific-Antarctic Ridge in the western Pacific sector of the SO (to the north of the Ross Sea Embayment) are used to reconstruct the bottom water palaeocirculation in this region across the last 540 ka. The proportion and $ɛ_{Nd}$ signature of Ross Sea Bottom Water (RSBW) bathing these core sites has fluctuated throughout the last 540 ka. These fluctuations suggest the rate and location of bottom water formation within the Ross Sea, and the supply of terrigenous material with radiogenic $ɛ_{Nd}$ values with which to isotopically `labelled' RSBW, may have changed in the past.

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Sellier, Virginie. "Développement de méthodes de traçage sédimentaire pour quantifier l'impact des mines de nickel sur l’hyper-sédimentation des rivières et l'envasement des lagons de Nouvelle-Calédonie Investigating the use of fallout and geogenic radionuclides as potential tracing properties to quantify the sources of suspended sediment in a mining catchment in New Caledonia, South Pacific Combining visible-based-colour parameters and geochemical tracers to improve sediment source discrimination in a mining catchment (New Caledonia, South Pacific Islands) Reconstructing the impact of nickel mining activities on sediment supply to the rivers and the lagoon of South Pacific Islands: lessons learnt from the Thio early mining site (New Caledonia)." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASV013.

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La Nouvelle-Calédonie, île située au Sud-Ouest de l’Océan Pacifique et actuel 6e producteur mondial de nickel, est confrontée à une pollution sédimentaire sans précédent de ses cours d’eau. En effet, l’exploitation minière débutée dès les années 1880 a fortement amplifié les processus d’érosion des sols et de transport sédimentaire. Une hyper-sédimentation des hydro-systèmes calédoniens a notamment été constatée suite au déploiement de l’activité minière sur l’archipel. Bien que ce phénomène constitue un facteur aggravant les problèmes d’inondation caractéristiques de ces régions tropicales, les contributions sédimentaires générées par l’exploitation minière restent encore inconnues à ce jour et sont pourtant importantes pour guider la mise en œuvre de mesures visant à réduire ces apports sédimentaires.À cette fin, une étude de traçage sédimentaire qualifiée de fingerprinting a été menée sur un bassin « pilote » : le bassin versant de Thio (397 km²), considéré comme le « berceau » de l’activité minière en Nouvelle-Calédonie. Différents marqueurs tels que les radionucléides, la géochimie élémentaire ou la « couleur » ont été testés pour quantifier les contributions des sources minières aux apports sédimentaires générés par deux crues cycloniques récentes (dépression tropicale en 2015, cyclone Cook en 2017). Une carotte sédimentaire a également été prélevée dans la plaine inondable de la rivière Thio afin de reconstruire l’évolution temporelle des contributions des sources minières. Les résultats de cette étude montrent que les contributions des sources minières dominent, avec une contribution moyenne comprise entre 65-68% pour la crue de 2015 et entre 83-88% pour celle de 2017. L’impact de la variabilité spatiale des précipitations a notamment été mis en évidence pour expliquer les variations des contributions de ces sources. Les variations temporelles des contributions des sources minières déduites de l’analyse de la carotte sédimentaire ont, quant à elles, pu être associées aux différentes périodes historiques de l’exploitation minière sur le bassin versant de Thio (pré-mécanisation, mécanisation, post-mécanisation de l’activité minière). Les contributions des sources minières restent, là encore, dominantes avec une contribution moyenne le long du profil sédimentaire de 74%. La méthode de traçage validée a ensuite été testée sur quatre autres bassins versants de Nouvelle-Calédonie afin d’évaluer la transposabilité de cette approche
New Caledonia, an island located in the south-western Pacific Ocean and currently the world's sixth largest producer of nickel, is facing unprecedented sedimentary pollution of its river systems. Indeed, nickel mining that started in the 1880s accelerated soil erosion and sediment transport processes. Hyper-sedimentation of the Caledonian hydro-systems has been observed after the deployment of mining activities on the archipelago. Although this phenomenon exacerbates the flooding problems experienced in these tropical regions, the sediment contributions generated by nickel mining remain unknown and are nevertheless required to guide the implementation of control measures to reduce these sediment inputs.To this end, a sediment fingerprinting study was carried out in a "pilot" catchment: the Thio River catchment (397 km²), considered as one of the first areas exploited for nickel mining in New Caledonia. Different tracers such as radionuclides, elemental geochemistry or "colour" properties were tested to trace and quantify the mining source contributions to the sediment inputs generated during two recent cyclonic flood events (tropical depression in 2015, cyclone Cook in 2017). A sediment core was also collected in the floodplain of the Thio River catchment to reconstruct the temporal evolution of these mining source contributions. The results of this study show that mining sources dominated sediment inputs with an average contribution ranging from 65-68% for the 2015 flood event to 83-88% for the 2017 flood event. The impact of the spatial variability of precipitation was highlighted to explain the variations in the contributions of these sources across the catchment. The temporal variations in the contributions of the mining sources deduced from the analysis of the sediment core were interpreted at the light of the mining history in the Thio River catchment (pre-mechanization, mechanization, post-mechanization of mining activity). The contributions of mining sources were again dominant with an average contribution along the sedimentary profile of 74 %. Once validated, this tracing method has been tested in four other catchments of New Caledonia in order to evaluate the validity of the approach in other contexts

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Kiehn, Adam Victor. "Geochemical fingerprinting of specular hematite from prehistoric mines and archaeological sites in southern Africa." 2008. http://purl.galileo.usg.edu/uga%5Fetd/kiehn%5Fadam%5Fv%5F200805%5Fms.

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Launder, J. D. G. "Geochemical fingerprinting of Australia’s youngest volcanoes: The Newer Volcanic Province, South Australia and Victoria." Thesis, 2017. http://hdl.handle.net/2440/128255.

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This item is only available electronically.
Traces of volcanic tephra, known as cryptotephra can provide an important isochronous marker that allows sedimentary archives to be aligned in space and time. However, this use of cryptotephra requires an understanding of the unique chemical fingerprint of the glass shards that originate from a particular volcano. Subsequently, this study investigates how the geochemical composition of volcanic centres varies between volcanic centres using collected samples from 9 volcanoes within the NVP, SA and Victoria. Analysis of geochemical data was obtained through laser ablation ICP-MS, to augment previously analysed electron microprobe data for 7 of the 9 sites. This study also investigates the viability of trace element analysis of cryptotephra grains through laser ablation as a useful addition to the major oxide analysis that can be carried out by electron microprobe. Statistical models of linear regression analysis, regression trees and KS-tests, were employed to identify the degree to which the volcanoes studied can be discriminated according to their elemental composition, on the basis of their major oxides and trace elements. The experimental results indicate that a quantifiable difference in major and trace elemental composition can be determined for all volcanic centres analysed except samples obtained from Warrnambool. Subsequently, this study has successfully identified 8 volcanoes with tephra and crypyotephra that possess specific geochemical fingerprints.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2017

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Частини книг з теми "Geochemical fingerprinting"

Miller, Jerry R., Gail Mackin, and Suzanne M. Orbock Miller. "Geochemical Fingerprinting." In SpringerBriefs in Earth Sciences, 11–51. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-13221-1_2.

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Hark, Richard R., and Russell S. Harmon. "Geochemical Fingerprinting Using LIBS." In Springer Series in Optical Sciences, 309–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-45085-3_12.

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Galerne, Christophe Y., and Else-Ragnhild Neumann. "Geochemical Fingerprinting and Magmatic Plumbing Systems." In Physical Geology of Shallow Magmatic Systems, 119–30. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-14084-1_4.

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Coleman, Dennis D. "Geochemical Fingerprinting: Identification of Storage Gas Using Chemical and Isotopic Analysis." In Underground Storage of Natural Gas, 327–38. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0993-9_21.

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Llanes Castro, Angelica Isabel, and Harald Furnes. "Geochemical Fingerprinting of Ancient Oceanic Basalts: Classification of the Cuban Ophiolites." In Geology of Cuba, 219–29. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67798-5_6.

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Lee, Well-Shen, Daniel J. Kontak, Jeremy P. Richards, Tony Barresi, and Robert A. Creaser. "Superimposed Porphyry Systems in the Dawson Range, Yukon." In Tectonomagmatic Influences on Metallogeny and Hydrothermal Ore Deposits: A Tribute to Jeremy P. Richards (Volume I), 29–48. Society of Economic Geologists, 2021. http://dx.doi.org/10.5382/sp.24.03.

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ABSTRACT Superimposed porphyry systems are a subset of telescoped porphyry deposits, whereby significantly younger ore zones overprint older, nongenetically related systems. Recognition of superimposed features in porphyry systems is important for determining and assessing their prospectivity. The Mount Nansen gold corridor in the southern Dawson Range gold belt of Yukon, Canada, contains porphyry prospects and epithermal deposits with enigmatic genetic models. Geologic, petrologic, temporal (U-Pb zircon, Re-Os molybdenite), and geochemical (whole-rock) studies are used to demonstrate the presence of superimposed porphyry systems in this district. The arc-related episodic magmatism of the Mount Nansen gold corridor has been classified into four intrusive suites: (1) Late Triassic Minto, (2) mid-Cretaceous Whitehorse, (3) Late Cretaceous Casino (eLKc; 80–72 Ma), and (4) Late Cretaceous Prospector Mountain (lLKp; 72–65 Ma). Geochemical fingerprinting of these suites indicates intermediate to evolved, calc-alkaline compositions with a common lower crust melt source. The eLKc and lLKp suites lack an Eu anomaly and show increasing amounts of light rare earth element (LREE) enrichment and heavy rare earth element (HREE) depletion over time. These features suggest that garnet was stable in the melt source and oxidized magmas were generated in these Late Cretaceous suites. The mildly alkaline lLKp and associated Carmacks Group shoshonitic basalts reflect localized extension in an overall compressive arc setting in the Mount Nansen gold corridor, hence a setting conducive for Au-rich porphyry and epithermal systems. The ca. 79 to 72 Ma Casino suite is commonly interpreted as the causative magmatic event for most well-endowed porphyry deposits (76 to 74 Ma in age) in the Dawson Range gold belt. However, our detailed study of the Klaza setting shows that at this locality, intermediate-sulfidation epithermal veins are a distal expression of a Prospector Mountain-age (ca. 71 Ma) porphyry system, which overprints two Casino-age porphyry systems (ca. 77 and 80 Ma). The Mount Nansen gold corridor thus hosts at least two spatially and temporally overprinting Late Cretaceous magmatic-hydrothermal systems in the Dawson Range gold belt. Importantly, recognition of this feature at other porphyry deposit settings in the Dawson Range gold belt (e.g., Freegold Mountain district) is critical as it provides the potential for metal (Cu-Au-Mo)-enriched hypogene ore shells.

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Cahoon†, Emily B., Martin J. Streck†, and Mark Ferns†. "Flood basalts, rhyolites, and subsequent volcanism of the Columbia River magmatic province in eastern Oregon, USA." In From Terranes to Terrains: Geologic Field Guides on the Construction and Destruction of the Pacific Northwest, 301–52. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.0062(08).

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ABSTRACT The Miocene Columbia River Basalt Group (CRBG) is the youngest and smallest continental flood basalt province on Earth. This flood basalt province is a succession of compositionally diverse volcanic rocks that record the passage of the Yellowstone plume beneath eastern Oregon. The compositionally and texturally varied suite of volcanic rocks are considered part of the La Grande–Owyhee eruptive axis (LOEA), an ~300-km-long, north-northwest–trending, Middle Miocene to Pliocene volcanic belt that extends along the eastern margin of the Columbia River flood basalt province. Volcanic rocks erupted from and preserved within the LOEA form an important regional stratigraphic link between the flood basalt–dominated Columbia Plateau to the north, the north and bimodal basalt-rhyolite volcanic fields of the Snake River Plain to the east, the Owyhee Plateau to the south, and the High Lava Plains to the south and east; the latter two have time transgressive rhyolite centers that young to the east and west, respectively. This field-trip guide details a four-day geologic excursion that will explore the stratigraphic and geochemical relationships among mafic rocks of the CRBG and coeval and compositionally diverse silicic rocks associated with the early trace of the Yellowstone plume and High Lava Plains in eastern Oregon. The trip on Day 1 begins in Portland then traverses across the western axis of the Blue Mountains, highlighting exposures of the widespread, Middle Miocene Dinner Creek Welded Tuff and aspects of the Picture Gorge Basalt lava flows and northwest-striking feeder dikes situated in the central part of the CRBG province. Travel on Day 2 progresses eastward toward the eastern margin of the LOEA, examining a transition linking the Columbia River Basalt province with a northwestward-younging magmatic trend of silicic volcanism of the High Lava Plains in eastern Oregon. Initial field stops on Day 2 focus on the volcanic stratigraphy northeast of the town of Burns, which includes regionally extensive Middle to Late Miocene ash-flow tuffs and lava flows assigned to the Strawberry Volcanics. Subsequent stops on Day 2 examine key outcrops demonstrating the intercalated nature of Middle Miocene tholeiitic CRBG flood basalts, temporally coeval prominent ash-flow tuffs, and “Snake River–type” large-volume rhyolite lava flows cropping out along the Malheur River. The Day 3 field route navigates to southern parts of the LOEA, where CRBG rocks are associated in space and time with lesser known and more complex silicic volcanic stratigraphy forming Middle Miocene, large-volume, bimodal basalt-rhyolite vent complexes. Key stops will provide a broad overview of the structure and stratigraphy of the Middle Miocene Mahogany Mountain caldera and of the significance of intercalated sedimentary beds and Middle to Late Miocene calc-alkaline lava flows of the Owyhee basalt. Initial stops on Day 4 will highlight exposures of Middle to Late Miocene silicic ash-flow tuffs, rhyolite domes, and calc-alkaline lava flows overlying the CRBG across the northern and central parts of the LOEA. The later stops on Day 4 examine more silicic lava flows and breccias that are overlain by early CRBG-related rhyolite eruptions. The return route to Portland on Day 4 traverses the Columbia River gorge westward from Baker City. The return route between Baker and Portland on Day 4 follows the Columbia River gorge and passes prominent basalt outcrops of large volume tholeiitic flood lavas of the Grande Ronde, Wanapum, and Saddle Mountains Formations of the CRBG. These sequences of basaltic and basaltic andesite lavas are typical of the well-studied flood basalt dominated Columbia Plateau, and interbedded silicic and calc-alkaline lavas are conspicuously absent. Correlation between the far-traveled CRBG lavas and calcalkaline and silicic lavas considered during the excursion relies on geochemical fingerprinting and dating of the mafic flows and dating of sparse intercalated ashes.

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Тези доповідей конференцій з теми "Geochemical fingerprinting"

Marcano, N., S. Mehay, K. Rojas, D. Coutrot, S. Arango, J. Peralta, C. Turich, and A. Stankiewicz. "Reservoir Continuity Assessment and Production Surveillance Using Geochemical Fingerprinting." In EAGE Workshop on Petroleum Geochemistry in Operations and Production. Netherlands: EAGE Publications BV, 2016. http://dx.doi.org/10.3997/2214-4609.201602326.

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Nouvelle, Xavier, Katherine Ann Rojas, and Artur Stankiewicz. "Novel method of production back-allocation using geochemical fingerprinting." In Abu Dhabi International Petroleum Conference and Exhibition. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/160812-ms.

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Forsythe, Julia C., Tetsushi Yamada, Guillaume Vidal, and Shawn David Taylor. "Compositional Fingerprinting for Geochemical Insights from Two-Dimensional Gas Chromatography." In 30th International Meeting on Organic Geochemistry (IMOG 2021). European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202134368.

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Blake, Johanna M., Christina Ferguson, and Keely Miltenberger. "Geochemical fingerprinting of source water to the Snowy River deposit." In 2022 New Mexico Geological Society Annual Spring Meeting & Ft. Stanton Cave Conference. Socorro, NM: New Mexico Geological Society, 2022. http://dx.doi.org/10.56577/sm-2022.2831.

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Vannier, G., N. Bernard, N. Brun, O. Ruau, and R. Elias. "Production Allocation Using Combined Geochemical Fingerprinting and Multivariate Curve Resolution." In Third EAGE Geochemistry Workshop. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.2021623007.

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Franco, P., I. Colombo, and R. Galimberti. "Novel Approach to Reservoir Continuity Evaluation Through Gc-Ms Geochemical Fingerprinting." In 30th International Meeting on Organic Geochemistry (IMOG 2021). European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202134016.

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Seitkhaziyev, Yessimkhan Sherekhanovich, Nariman Danebekovich Sarsenbekov, and Rakhim Nagangaliyevich Uteyev. "Geochemical Atlas of Oils and Source Rocks and Oil-Source Rock Correlations: A Case Study of Oil and Ggas Fields in the Mangyshlak Basin (Kazakhstan)." In SPE Annual Caspian Technical Conference. SPE, 2022. http://dx.doi.org/10.2118/212078-ms.

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Abstract This paper presents the results of fingerprinting and biomarker analysis of 183 crude oil samples derived from 19 oil and gas fields in the South Mangyshlak basin and Rock -Eval pyrolysis performed on 93 core samples from 12 fields of this basin. Geochemical atlas was made based on the oil fingerprinting studies, according to which, the studied fields of the South- Mangyshlak basin can be divided into 3 groups: same type of oils on the scale of groups of fields. This group includes Permian-Triassic oils of the Karaginskaya Saddle (Northern Karagiye, Atambay, Alatyube, Ashchiagar) and the Peschannomyssko-Rakushechnaya uplift zone (Oymasha), which have very similar oil fingerprinting either within each field or on the scale of these fields. oils of the same type within the same field. The second group includes oils from Pridorozhnoye, Airantakyr, Burmasha and Bekturly fields, each of which has its own unique oil fingerprinting of light aromatic hydrocarbons. different types of oils within the same field. This group includes oils from the rest of the studied Zhetybay- Uzen steps such as Asar, East Zhetybay, South Zhetybay, Aktas, Turkmenoy, Tasbulat, Uzen and Karamandybas fields, since within each of these fields were identified several different groups of oils that require a detailed study of their biomarkers to determine their genetic origin and trace hydrocarbon migration pathways. The obtained results of oil fingerprinting are consistent with their biomarker compositions, according to which the oils of the first group, identified by their fingerprinting, were generated from marine shaly source rocks, while those of the second group were from shaly source rocks, deposited in whether marine or lacustrine environments. The biomarker composition of the third group oils exhibited that the oils within each of these fields have at least two genetic sources: the oils of the lower pay zones have shaly marine OM source, while those of the upper upper pay zones were formed by OM deposited in lacustrine environment. Their biomarkers clearly show a regular change in the contribution of lacustrine OM input to marine one with the depth increase of pay zones and within the field of this group thermally more mature oils of a marine source (23-24 horizons Uzen and Karamandybas, J-10 and J-11 fields of Asar, Zhetybay, Zhetybay East) were mixed with relatively lower mature oils of the upper lacustrine source (13-16 th pay zones in Uzen and Karamandybas, J-J-3a, J-4a in Asar field, J-5 in Zhetybay, J-1 in Zhetybay East) with their upward migration. To characterize source rocks, where the studied oils were generated, Rock-Eval pyrolysis was performed on core samples of different ages, which revealed that in reality the reservoirs of the Asar, Zhetybay, Karamandybas, Uzen and Akkar fields can be considered synclinal, that means, it serves as both reservoir and source rock, which explains the different oil fingerprintings and the vertical and lateral differences in their biomarkers. The main role in the formation of deposits in the stratum played the lateral migration of hydrocarbons from the most submerged parts. Rock -Eval results also enabled to clarify the reasons for the different compositions of oil biomarkers: for example, by pyrolysis, the studied core samples from the Permian- Triassic and Triassic deposits of Oymashaa, Atambay -Sartyube and Pridorozhnoye are so thermally overmature that they are in the zone of gas generation and possess low generative potential, and as shown by biomarker analysis, their oils have such a high thermal maturity that only tiny amount of biomarkers is left. This circumstance is reflected in a sharp reduction in the resources of liquid hydrocarbons in Permian- Triassic deposits compared to Jurassic deposits and in an equally sharp increase in the share of gas formation. Also "oil-source rock correlation" studies were made to discern genetic link between oils and hydrocarbons extracted from potential source rocks.

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Birkle, Peter. "Geochemical Fingerprinting of Produced Water for Enhanced Well Control and Fracturing Efficiency." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2020. http://dx.doi.org/10.2523/iptc-19904-ms.

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Sikder, Arif M., Nazrul I. Khandaker, Stanley Schleifer, Xin-Chen Liu, Carlos E. Castano Londono, Krishna Mahabir, and Zarine Ali. "GEOCHEMICAL FINGERPRINTING OF BEACH PLACER DEPOSITS, MONTAUK POINT, LONG ISLAND, NEW YORK." In 66th Annual GSA Southeastern Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017se-290553.

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Schafer, Daniel B., Katrina Nadine Cooper, Mark A. McCaffrey, Olivia Omann Bommarito, Paulina Meixueiro, and Matthew Mower. "Geochemical Oil Fingerprinting - Implications For Production Allocations At Prudhoe Bay Field, Alaska." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2011. http://dx.doi.org/10.2118/146914-ms.

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Звіти організацій з теми "Geochemical fingerprinting"

Poulin, R. S., A. M. McDonald, D. J. Kontak, and M. B. McClenaghan. Scheelite geochemical signatures and potential for fingerprinting ore deposits. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/296473.

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Perkey, David, Mark Chappell, Jennifer Seiter, and Heidi Wadman. Identification of sediment sources to Calumet River through geochemical fingerprinting. Engineer Research and Development Center (U.S.), May 2017. http://dx.doi.org/10.21079/11681/22191.

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Perkey, David, Anthony Priestas, Brandon Boyd, Jeffrey Corbino, and Lee Moores. Geochemical fingerprinting of sediment sources associated with deposition in the Calcasieu Ship Channel. Engineer Research and Development Center (U.S.), April 2020. http://dx.doi.org/10.21079/11681/36313.

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Perkey, David W., Anthony M. Priestas, Jeffrey M. Corbino, Gary L. Brown, Michael A. Hartman, Danielle R. N. Tarpley, and Loung Phu V. Sediment Provenance Studies of the Calcasieu Ship Channel, Louisiana : A Synopsis Report. U.S. Army Engineer Research and Development Center, July 2022. http://dx.doi.org/10.21079/11681/44905.

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To maintain the navigability of the Calcasieu Ship Channel (CSC), the US Army Corps of Engineers annually dredges millions of cubic yards of sediment from the inland channel. To assess sources of channel shoaling, a previous study examined river and bankline erosion as inputs. Results from that study accounted for approximately 20% of dredged volumes. Through the support of the Regional Sediment Management Program, a follow-up investigation reviewed prior sediment budgets, identified potential missing sediment sources, modeled potential sediment pathways, and utilized geochemical fingerprinting to discern primary shoaling sources to the channel. The missing sediment sources from the original budget include coastally derived sediment from the Gulf of Mexico and terrestrially derived sediment from Lake Calcasieu and surrounding wetlands. Results from geochemical fingerprinting of various potential sediment sources indicate the Calcasieu River and the Gulf of Mexico are primary contributors of sediment to the CSC, and sediments sourced from bankline erosion, Lake Calcasieu bed, and interior wetlands are secondary in nature. These results suggest that engineering solutions to control shoaling in the CSC should be focused on sources originating from the Gulf of Mexico and river headwaters as opposed to Lake Calcasieu, channel banklines, and surrounding wetlands.

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Kingston, A. W., O. H. Ardakani, and R A Stern. Tracing the subsurface sulfur cycle using isotopic and elemental fingerprinting: from the micro to the macro scale. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329789.

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Hydrogen sulfide (H2S) is a toxic and corrosive gas that commonly occurs in deeply buried sedimentary systems. Understanding its distribution is paramount to creating safe and effective models of H2S occurrence aiding in the identification of high-risk areas. Characterizing subsurface sulfur sources and H2S formation pathways would enhance these models leading to more accurate predictions of potential high H2S regions. However, gaps remain in our understanding of the dominant formation processes and migration pathways of key ingredients for H2S production in the Lower Triassic Montney Formation of the Western Canada Sedimentary Basin (WCSB). Essential to this is assessing the reactants necessary for H2S production, potential pathways for fluid migration, diagenetic history, and changes in redox conditions through time. The Montney Formation has undergone several phases of diagenesis related to post-depositional alteration and multiple cycles of tectonic burial and uplift. Early chemical alteration includes dolomitization and, in some cases, microbial reduction of porewater sulfate to sulfide that occurred prior to significant burial (Davies et al., 1997; Vaisblat et al., 2021; Liseroudi et al., 2020, 2021). The most recent tectonic-related burial during the Laramide Orogeny resulted in burial depths in excess of 3-5 km (Ness, 2001; Ducros et al., 2017) leading to significant thermal and barometric alteration. Associated with this orogenic activity was the reactivation of underlying faults (O'Connell et al., 1990) and development of fractures especially near the deformation front. These fractures provide conduits for fluid migration into the Montney that combined with heat and pressure resulting in hydrocarbon generation, migration, and development of overpressure, notably in the western margin of the basin. In addition, high temperatures resulted in thermochemical sulfate reduction (TSR) leading to the formation of H2S and subsequently pyrite. We present an interpretation of the Montney subsurface sulfur cycle through the use of petrography, micro- and macro-scale geochemical analysis (isotopic and elemental) to illustrate the complexity of this system. This work relies heavily on previous studies within and outside our research group and incorporates new analytical techniques to expand the toolbox. We aim to guide future research directions and activities by addressing issues related to sampling and data quality issues, analytical approaches, and highlight knowledge gaps.

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Manor, M. J., and S. J. Piercey. Whole-rock lithogeochemistry, Nd-Hf isotopes, and in situ zircon geochemistry of VMS-related felsic rocks, Finlayson Lake VMS district, Yukon. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328992.

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The Finlayson Lake district in southeastern Yukon is composed of a Late Paleozoic arc-backarc system that consists of metamorphosed volcanic, plutonic, and sedimentary rocks of the Yukon-Tanana and Slide Mountain terranes. These rocks host &gt;40 Mt of polymetallic resources in numerous occurrences and styles of volcanogenic massive sulphide (VMS) mineralization. Geochemical and isotopic data from these rocks support previous interpretations that volcanism and plutonism occurred in arc-marginal arc (e.g., Fire Lake formation) and continental back-arc basin environments (e.g., Kudz Ze Kayah formation, Wind Lake formation, and Wolverine Lake group) where felsic magmatism formed from varying mixtures of crust- and mantle-derived material. The rocks have elevated high field strength element (HFSE) and rare earth element (REE) concentrations, and evolved to chondritic isotopic signatures, in VMS-proximal stratigraphy relative to VMS-barren assemblages. These geochemical features reflect the petrogenetic conditions that generated felsic rocks and likely played a role in the localization of VMS mineralization in the district. Preliminary in situ zircon chemistry supports these arguments with Th/U and Hf isotopic fingerprinting, where it is interpreted that the VMS-bearing lithofacies formed via crustal melting and mixing with increased juvenile, mafic magmatism; rocks that were less prospective have predominantly crustal signatures. These observations are consistent with the formation of VMS-related felsic rocks by basaltic underplating, crustal melting, and basalt-crustal melt mixing within an extensional setting. This work offers a unique perspective on magmatic petrogenesis that underscores the importance of integrating whole-rock with mineral-scale geochemistry in the characterization of VMS-related stratigraphy.

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Kingston, A. W., O. H. Ardakani, G. Scheffer, M. Nightingale, C. Hubert, and B. Meyer. The subsurface sulfur system following hydraulic stimulation of unconventional hydrocarbon reservoirs: assessing anthropogenic influences on microbial sulfate reduction in the deep subsurface, Alberta. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330712.

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Hydraulic fracturing is a reservoir stimulation technique that involves the injection of high-pressure fluids to enhance recovery from unconventional hydrocarbon reservoirs. Often this involves the injection of surface waters (along with additives such as biocides) into formational fluids significantly different isotopic and geochemical compositions facilitating geochemical fingerprinting of these fluid sources. In some instances, the produced fluids experience an increase in hydrogen sulfide (H2S) concentration over the course of production resulting in an increased risk to health and safety, the environment, and infrastructure due to the toxic and corrosive nature of H2S. However, questions remain as to the origin and processes leading to H2S formation following hydraulic fracturing. In this study, we analyzed a series of produced waters following hydraulic fracturing of a horizontal well completed in the Montney Formation, Western Canada to evaluate variations in geochemical and microbiological composition over time and characterize potential sulfur species involved in the production of H2S. Initially, sulfur isotope ratios (d34S, VCDT) of dissolved sulfate in produced water had a baseline value of 27per mil similar to the d34S value of 25per mil for solid anhydrite derived from core material. Subsequently, d34S values of sulfate in produced fluids sequentially increased to 35per mil coincident with the appearance of sulfides in produced waters with a d34SH2S value of 18per mil. Oxygen isotope values of dissolved sulfate exhibited a synchronous increase from 13.2per mil to 15.8per mil VSMOW suggesting sulfate reduction commenced in the subsurface following hydraulic fracturing. Formation temperatures are &lt;100°C precluding thermochemical sulfate reduction as a potential mechanism for H2S production. We suggest that microbial reduction of anhydrite-derived sulfate within the formation is likely responsible for the increase in H2S within produced waters despite the use of biocides within the hydraulic fracturing fluids. Initial assessments of microbial communities indicate a shift in community diversity over time and interactions between in situ communities and those introduced during the hydraulic fracturing process. This study indicates that biocides may not be fully effective in inhibiting microbial sulfate reduction and highlights the role anthropogenic influences such as hydraulic fracturing can have on the generation of H2S in the subsurface.

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