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TY - CONF. T1 - U/Pb-dating of calcite slickenfibres. AU - Rittner, tin. AU - Muller, Wolfgang. PY - 2009/6. Y1 - 2009/6. M3 - Paper. SP - A1 4-A1 4. Home Ear Sciences home Research Profile Publications U/Pb-dating of calcite slickenfibres. U/Pb-dating of calcite slickenfibres. / Rittner, tin. Muller, Wolfgang. 2009. A1 4-A1 4. Research output: Contribution to conference › Paper. Published. Overview. Cite. tin Rittner. Wolfgang Muller. 17,  · Stable O isotope composition in calcite was determined, via Secondary Ion Mass Spectrometry (SIMS), to fur er ensure dating of a single mineral grow event. Cited by: 4. Apr 01,  · We use structural geology, petrographical and microstructural tools to characterise fault-related calcite veins and slickenfibres. U-Pb dating of calcite is used to reconstruct e Pliocene-Pleistocene displacement history along ese first-order structures.Au or: Ca erine y Mottram, Djordje Grujic, Isabelle Coutand. 23,  · e calcite LA-MC-ICPMS in situ U-Pb dating is recommended for future use in age determination of hydro ermal ore deposits wi extremely low U and Pb contents and a large spread of U/Pb ratios. (2) e new U-Pb age of 115.3 ± 1.5 Ma represents e timing of main-stage Sb mineralization during e early Cretaceous. 60.0 ± 0.9 Ma probably indicates a tectono ermal event . First, al ough based only on a limited set of data, e ages obtained by U-Pb dating of calcite veins have brought isive insights into e sequence of deformation recorded in e SPFT. For some veins (A56 and SE), absolute age determinations were in contradiction wi e interpretations based solely on e study of fracture sets (i.e., younger and older, respectively). U-Pb Dating of Calcite by LA-ICPMS - NASA/ADS. An emerging frontier area in geochronology is U-Pb dating of carbonate minerals by laser-ablation inductively coupled plasma mass spectrometry (LA-ICPMS). e spate of papers over e last few years applying LA-ICPMS to carbonate dating stems from e capability of LA-ICPMS to deal wi e variable, and often low, U/Pb ratios of carbonate. U-Pb dating of calcite veins reveals complex stress evolution and rust sequence in e Bighorn Basin, Wyoming, USA Nicolas Beaudoin. Nicolas Beaudoin. Laboratoire des Fluides Complexes et leurs Réservoirs-IPRA, E2S-UPPA, Total, CNRS, Université de Pau et . LA-ICP-MS spots in e S2 sparry calcite exhibit extremely high radiogenic isotope composition, wi 207 Pb/ 206 Pb showing pure radiogenic Pb. e results obtained by LA-ICP-MS yield statistically homogeneous ages between 91.7 ± 2.2 Ma and 94.7 ± 2.6 Ma (all systematic errors were propagated. see Item DR1) for La Nesque, Rustrel, Font Jouvale, and Col de la Ligne samples. orium-232-lead-208 and uranium-238-lead-206 radiometric ages for ore-stage calcite show at Mississippi Valley-type (MVT) ore deposits can form in distinct tectonic settings. An age of 251 ± 11 million years for e Jumbo Mine in Kansas, United States, is in agreement wi o er ages for MVT deposits in e midcontinent of Nor America. e similarity of ages of ese deposits supports. U-Pb dating of calcium carbonate using LA-MC-ICPMS By 立憲 横山, 陽子 國分, 丈裕 三ツ口, 裕晃 村上, 岳史 平田, 周平 坂田, 徹 檀原, 英樹 岩野, 誠史 丸山, 隆 宮崎, 青 常, 純一 木村, Yokoyama Tatsunori, Kokubu Yoko, Mitsuguchi Takehiro, Murakami Hiroaki, Hirata Takafumi, Sakata Shuhei, Danhara Toru. Results of in situ U–Pb dating of calcite spherulites, cone-in-cone (CIC) calcite and calcite fibres from a calcareous concretion of e upper Ediacaran of Finn k, Arctic Norway, are reported. [60] e age of fluid migration forming e MVT deposits of e midcontinent of Nor America has been dated by ‐Pb dating of ore stage calcite at [Brannon et al., 1996a, 1996b]. U concentrations from e early stage calcites were in e low ppb level while Pb . Palaeocene faulting in SE Sweden from U–Pb dating of slickenfibre calcite e direct U–Pb dating of tectonic events recorded in carbonates Close-up view of slickenfibres on Fault 1. Accurately determining e age of hydro ermal ore deposits is difficult, as a lack of suitable mineral chronometers and techniques. Here we present e first LA-MC-ICPMS U-Pb age of carbonates from hydro ermal Sb deposits. ree stages of hydro ermal carbonates from e giant Sou China Sb metallogenic belt were identified: (i) pre-ore dolomite (Dol-I), (ii) syn-ore calcite (Cal-II) Mylonitic foliation planes and brittle-ductile faults were reactivated during e Cretaceous. U–Pb dating of fault-hosted calcite constrain is brittle reactivation to e age of 135 Ma (Valanginian), which is associated wi opening of e Sou Atlantic Ocean and e rift phase of e Jatobá Basin. CRediT au orship contribution statement. We report 22 calcite U-Pb ages from tectonites and carbonate host rocks at date 3 diagenetic and 6 brittle deformation events. Results show at U-Pb dating of calcite fibers from ese structures is compatible wi overprinting relationships. Ages indicate at diagenesis occurred between 147 ± 6 Ma and 3 ± 34 Ma, and was followed by top. Estimating e timing of faulting is crucial to modelling tectonics, palaeoseismicity, landscape evolution and fault mechanics. Four slickenfibre calcite samples from a conjugate strike-slip fault set in a platformal limestone, SE Sweden, were dated using U–Pb. ree of e samples yielded an average age of 64.8 ± 6.5 Ma, while e four yielded a ginally younger age of 54.7 ± 5.5 Ma. e calcite LA-MC-ICPMS in situ U-Pb dating is recommended for future use in age determination of hydro ermal ore deposits wi extremely low U and Pb contents and a large spread of U/Pb ratios. (2) e new U-Pb age of 115.3 ± 1.5 Ma represents e timing of main-stage Sb mineralization during e early Cretaceous. 60.0 ± 0.9 Ma probably. Direct dating of brittle structures is challenging, especially abso-lute dating of diagenesis followed by a series of superimposed brittle deformation events. We report 22 calcite U-Pb ages from tectonites and carbonate host rocks at date 3 diagenetic and 6 brittle deforma - tion events. Results show at U-Pb dating of calcite fibers from ese. , 2009 · Guido Meinhold, Nick M. W. Roberts, Arzu Arslan, Sören Jensen, Ove R. Ebbestad, Anette E. S. Högström, Magne Høyberget, Heda Agić, Teodoro Palacios, Wendy L. Taylor, U–Pb dating of calcite in ancient carbonates for age estimates of syn- to post-depositional processes: a case study from e upper Ediacaran strata of Finn k, Arctic. ,  · Abstract Results of in situ U–Pb dating of calcite spherulites, cone-in-cone (CIC) calcite and calcite fibres from a calcareous concretion of e upper Ediacaran of . Results of in situ U-Pb dating of calcite spherulites, cone-in-cone (CIC) calcite and calcite fibres from a calcareous concretion of e upper Ediacaran of Finn k, Arctic Norway, are reported. Ca. niques to speleo em (secondary cave calcite such as stalag-mites and flowstones) research has not been conducted, al- ough U–Pb dating of speleo ems is widely used in stud-ies of climate change (e.g. Vaks et al., . Sniderman et al., ), human evolution and migration (e.g. Walker. 1 1 U/Pb dating of geodic calcite: new insights on Western 2 Europe major tectonic events and associated diagenetic fluids 3 Céline Pisapia 1,2,*,a, Pierre Deschamps 1, Anne Battani 2,b, Stéphane Buschaert 2,c, Abel 4 Guihou 1, Bruno Hamelin 1 & Jacques Brulhet 2 5 1 CEREGE, Aix- seille Université-CNRS-IRD, Europôle Méditerranéen de l’Arbois. 11,  · LA-ICP-MS U–Pb dating of calcite is a recently developed approach to direct dating of calcite and can provide precipitation ages for modelling clumped-isotope systematics in calcite veins. In is study, clumped-isotope and LA-ICP-MS U–Pb calcite analyses were combined in basalt-hosted calcite veins from ree settings in Scotland. An improved me od of U–Pb dating of vein calcite formed during deformation is used to determine e age and cause of folding along e sou coast of England. Fractures arising from folding of Late Cretaceous Chalk of sou ern England occurred 34.7 ± 1.7 myr ago. Underlying Jurassic strata have veins wi in fractures wi ages of 55, 48–42, 39–37, 34–31 and 25 Ma, wi 34–31 Ma. 17,  · dating to fine-grained mineral slickenfibres in faults occurring in Paleoproterozoic crystalline rocks. Slickenfibre illite and/or K-feldspar toge er wi co-genetic calcite and/or albite were targeted wi 50 µm laser ablation triple quadrupole inductively . is study presents e first application of e U/Pb dating me od to highly Pb-depleted diagenetic geodic calcites of e Jurassic formations of e Paris Basin at leads to a reappraisal of e palaeohydrological history of is region. Composite U/Pb ages from multiple geodes, combined wi δ18O analyses, reveal two main phases of diagenetic fluid circulations linked wi major regional. Duplicate Title to U-Pb dating of calcite veins reveals complex stress evolution and rust sequence in e Bighorn Basin, Wyoming, USA User Workarea, Publications Router - [ Manage ] [ Compare & Merge ] [ Acknowledge ] We report U-Pb absolute ages of calcite cements from a diffuse vein network documented in e Bighorn Basin (Wyoming, USA. In geology, a slickenside is a smoo ly polished surface caused by frictional movement between rocks along e two sides of a fault. is surface is normally striated in e direction of movement. e plane be coated by mineral fibres at grew during e fault movement, known as slickenfibres, which also show e direction of displacement.Due to irregularities in e fault plane exposed. is study presents e first application of e U/Pb dating me od to highly Pb-depleted diagenetic geodic calcites of e Jurassic formations of e Paris Basin at leads to a reappraisal of e palaeohydrological history of is region. Composite U/Pb ages from multiple geodes, combined wi δ18O analyses, reveal two main phases of diagenetic fluid circulations linked wi. LA-ICP-MS U-Pb dating of calcite veins in e Bighorn Basin: provides absolute time constraints on formation/cementation of systematic vein sets -confirms e relevance of vein sets to large-scale tectonics-confirms existing models for propagation of Sevier deformation and for. Beaudoin, Nicolas, et al. U-Pb dating of calcite veins reveals complex stress evolution and rust sequence in e Bighorn Basin, Wyoming, USA. Geology 47.9 (): e481-e481. Abstract. We present new field observations from Selwicks Bay, NE England, an exposure of e Flamborough Head Fault Zone (FHFZ). We combine ese. is manuscript describes a new me od of U-Pb calcite dating by laser ablation using a new detector array at allows for higher precision and lower limits of detection. is me od ereby increases e likelihood of success in dating any given sample. I also explore how concentration of U and Pb, laser spot size and repetition rate, and mass. calcites, laser-based U-Pb dating was conducted, and additionally C, O, and Sr isotopes and REE were analyzed to verify e results of dating and corresponding diagenetic environment. U-Pb dating revealed at calcite in vugs formed at 344 ±20 Ma during early Hercynian. magacalcite in . Uranium–lead dating, abbreviated U–Pb dating, is one of e oldest and most refined of e radiometric dating schemes. It can be used to date rocks at formed and crystallised from about 1 million years to over 4.5 billion years ago wi routine precisions in e 0.1–1 percent range. e me od is usually applied to zircon. A record of fluid flow has been documented wi in a Paleozoic carbonate platform sequence by U–Pb dating of calcite in veins and vugs from rock core sampled rough a shallowly dipping sequence of sedimentary rocks benea e Bruce nuclear site, Ontario, Canada. Secondary calcite from 650 m deep Ordovician carbonate rocks yields a Silurian. e age of e Big Room level o.0 ± 0.2 Ma was previously determined by dating alunite, a byproduct of speleogenesis, using e 40Ar/39Ar me od. Duplication of ese results is possible by radiometric dating of o er byproducts interpreted to be speleogenetic (a byproduct of speleogenesis) such as calcite and dolomite in certain settings. Minerals, an international, peer-reviewed Open Access journal. Dear Colleagues, Al ough being born at e dawn of e last century (e.g. U–He me od), toge er wi o er radioisotopic dating techniques, for a long time e low-temperature ermochronological me ods were criticized because ey often yielded younger ages an ose obtained by o er me ods. 71 during SAS, if dateable by e U-Pb me od, it should produce an age equivalent to e 72 Big Room level of speleogenesis, which is 4 Ma. Richards et al. (1998) and Woodhead 73 et al. (2006. ) demonstrated at speleo em calcite and aragonite are dateable 74 using e U-Pb dating me od. Numerous studies since have corroborated eir. of calcite cement, S1 and S2, have been docu-mented in e formation, based on petrographi-cal and textural evidence showing a continuum from e S1 microsparite to e S2 blocky calcite. Note at e S1 phase is too small and inclusion rich to be subsampled for U-Pb dating purposes. e UL is ked by several short-term syn-.

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