Rutile U-Pb Dating
Rutile u-pb dating Jun 06, · A potential issue for U Pb dating of rutile, especially in young, less radiogenic samples, is the relatively large proportion of common (non radiogenic) Pb (i.e., which can be incorporated into the crystal structure during crystallisation or derived from contamination) resulting in low ratios of radiogenic Pb to common Pb (e.g., Treloar et al., from UHP rocks).Cited by:
Rutile U-Pb analyses and age uncertainties Individual rutile U-Pb analyses typically take minutes per spot. The spot size is approximately 45x45 microns.
Apr 01, · Rutile can also accommodate small amounts of uranium in its structure (generally 3– μg g −1), enough for U–Pb dating (e.g., Meinhold, ). However, it is important to note that the U contents of some crystals are too low (Cited by: 2.
Motivations for U/Pb rutile dating are multifold: (1) in Pb in rutiles. contrast to zircon, rutile is assumed to be unstable during In this study, we have systematically evaluated in situ low-grade metamorphic conditions, so that rutile grown dating of rutile by LA-ICP-MS including initial common.
A growing body of research focusing on U-Pb dating of rutile by LA ICP-MS is greatly improving our understanding of the behavior of this mineral with regards to retention of radiogenic Pb. This is key to fully exploit its potential as a tracker of geological processes. The latest developments in this field are reviewed in this [HOST] by: 2.
Nov 25, · More recently, high spatial resolution U–Th–Pb dating techniques (laser ablation inductively coupled plasma mass spectrometry LA-ICP-MS) and SIMS (secondary ionization mass spectrometry) have been developed for in-situ and detrital rutile geochronology (e.g., Vry and Baker, , Kooijman et al., , Li et al., , Zack et al., , Taylor et al., ).Cited by:
Rutile U-Pb dating by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has received increasing attention in geological applications. Previous natural rutile reference materials are insufficient to meet the growing demand of working standards for laser U/Pb dating.
A method for in situ rutile U–Pb dating was developed using a multiple-collector (MC) ICPMS coupled to an excimer laser-ablation system. Compared with single collector Quadruple ICPMS used by previous in situ rutile U–Pb dating studies, the Neptune Plus MC-ICPMS used in this study has higher sensitivity and is capable of simultaneous acquisition.
This study documents important analytical advances in in situ LA-ICP-MS U/Pb geochronology of rutile: (1) Matrix matching, necessary for robust in situ dating is fulfilled by calibrating and testing several rutile standards (R10, R19, WH-1), including the presentation of new TIMS ages for the rutile standard R19 ( ± Ma; errors always stated as 2 s).
Matrix‐matched reference materials are necessary for accurate microbeam U‐Pb dating and Hf isotopic determination. This study introduces the RMJG rutile as a new potential reference material, which was separated from Palaeoproterozoic pelitic granulites collected in Hebei Province, [HOST]: Le Zhang, Jia‐Lin Wu, Jia‐Run Tu, Dan Wu, Nan Li, Xiao‐Ping Xia, Zhong‐Yuan Ren.
This study documents important analytical advances in in situ LA-ICP-MS U/Pb geochronology of rutile: (1) Matrix matching, necessary for robust in situ dating is fulfilled by calibrating and.
Dec 01, · Rutile SIMS U-Pb dating yields a more precise and robust age of ± Ma for the gold [HOST] by: 1.
Wei Gao, Ruizhong Hu, Albert H. Hofstra, Qiuli Li, Jingjing Zhu, Keqiang Peng, Lan Mu, Yong Huang, Jianwen Ma, Qiang Zhao; U-Pb Dating on Hydrothermal Rutile and Monazite from the.
A growing body of research focusing on U-Pb dating of rutile by LA ICP-MS is greatly improving our understanding of the behavior of this mineral with regards to r etention of radiogenic Pb.
The di culties in U-Pb dating rutile can rather lie in unfavorably high common to radiogenic Pb ratios in the case of low U content. The concentration of Th in rutile is generally negligible. The Zr content of rutile crystallized in a zircon-saturated environment is dependent on temperature [30–33].
The purpose was to allow a systematic evaluation of in situ dating of hydrothermal rutile by LA-ICP-MS. U-Pb ages from different rutiles range between ± 6 Ma and ± 5 Ma, indicating that different parts of the orogen were affected by episodic fluid flow under oxidizing conditions over a similar time interval.
obtained U/Pb rutile ages have been used in TIMS dating studies to put constraints on the cooling path (e.g., Mezger et al. ;Mo¨ller et al. ); and (5) progress in rutile.
Mar 24, · This paper reports the results of secondary ion mass spectrometry (SIMS) U-Pb dating of rutile within eclogitic xenoliths from the Early Cretaceous adakitic rocks in the Xuzhou-Huaibei area of China and discusses the geological significance of these new dates.
A new natural rutile reference material is presented, suitable for U‐Pb dating and Zr‐in‐rutile thermometry by microbeam methods. U‐Pb dating of rutile R using laser ablation ICP‐MS with both magnetic sector field and quadrupole instruments as well as isotope dilution‐thermal ionisation mass spectrometry yielded a concordia age of ± 2 Ma.
U/Pb dating studies where single rutile grains where analysed in situ are confined to Clark et al. () using SHRIMP, Vry and Baker () using laser ablation (LA)-MC-ICP-MS, Storey et al.
High-sensitivity U–Pb rutile dating by secondary ion mass spectrometry (SIMS) with an O 2 + primary beam Axel K. Schmitt a,⁎, Thomas Zack b,1 a Department of Earth and Space Sciences, University of California Los Angeles, Charles Young Dr. E, Geology Building , Los Angeles, CA , USA.
Feb 12, · U-Pb LA-ICPMS dating of rutile gave an age of Ma, within the age range of Early Devonian granites in the region, which have intruded Cambro-Ordovician metasediments (St Arnaud Group). Sources within contact metamorphosed pelitic metasediments and associated pegmatites are indicated for the rutile, and probably for schorl, andalusite and.
Feb 01, · The contiguous region between Guangxi, Guizhou, and Yunnan, commonly referred to as the Golden Triangle region in SW China, hosts many Carlin-type gold deposits. Previously, the ages of the gold mineralization in this region have not been well constrained due to the lack of suitable minerals for radiometric dating. This paper reports the first SIMS U–Pb age of hydrothermal rutile crystals.
ity and prolificacy of the U–Pb system. Though zircon is by far the most commonly utilized mineral for U–Pb dating (Hanchar and Hoskin, ), monazite, apatite, xenotime, titanite, rutile, baddeleyite, allanite, and perovskite are also commonly dated and provide a spectrum of geochronologic and thermochronologic applications in igneous, metamor-.
The power of in situ U/Pb rutile dating is illustrated by comparing ages of detrital rutile and zircon from a recent sediment from the Christie Domain of the Gawler Craton, Australia. While the U/Pb age spectrum from zircons show several pronounced peaks that are correlated with magmatic episodes, rutile U/Pb ages are marked by only one.
with U-Pb dating of detrital rutile and zircon, is. an effective tool to distinguish the sedimentary. provenance of the major river networks draining. the eastern Tibetan Plateau. Our data show.
D. Gasser, P. Jeřábek, C. Faber, H. Stünitz, L. Menegon, F. Corfu, M. Erambert, M. J. Whitehouse Behaviour of geochronometers and timing of metamorphic reactions during deformation at lower crustal conditions: phase equilibrium modelling and U-Pb dating of zircon, monazite, rutile and titanite from the Kalak Nappe Complex, northern Norway.
While rutile (TiO 2) occurs in the heavy mineral suite of detrital sediments and originates mainly in medium- to high-grade metamorphic and some igneous rocks, there are very few applications of U-Pb dating of rutile to provenance studies; this is due to an overreliance on zircon, low U content of rutile limiting measurement quality by in situ methods, a higher proportion of common Pb.
Oct 31, · U–Pb dating of zircon gave an age of – Ma for the eclogite, and that of rutile yielded a slightly younger age of ca. Ma. These ages are consistent with the reported Lu–Hf mineral isochron and phengite Ar–Ar ages.
A method for in situ rutile U-Pb dating was developed using a multiple-collector (MC) ICPMS coupled to an excimer laser-ablation system. Compared with single collector Quadruple ICPMS used by previous in situ rutile U-Pb dating studies, the Neptune Plus MC-ICPMS used in this study has higher sensitivity and is capable of simultaneous acquisition of all the isotope signals required for rutile U.
Rutile separates from three samples of whiteschist have low Th/U ratios .
In general, granulite-facies rocks appear to be good samples for U/Pb rutile dating as they commonly contain rutiles with >20 ppm U. From an analytical point of view, rutile is a particularly attractive phase for laser ablation ICP-MS dating for two reasons: 1) it forms often large (as compared to e.g. zircon), homogeneous single grains of >
A further complication to U–Pb dating is that rutile can contain a relatively large proportion of common (non radiogenic) Pb. Compared to zircon, it is characterized by a lower closure T for Pb diffusion (ca. ºC, although this is debated) and can therefore be used as a thermochronometer to constrain cooling histories of metamorphic terranes.
reproducibility and accuracy of the dating technique. We have addressed these issues and characterized two ˘ Ga rutile reference materials (namely Sugluk-4 and PCA-S from granulite facies belts of the Canadian Shield) by SEM, trace elements, U-Pb ID-TIMS, and intra-grain and inter-grain U-Pb LA-MC-ICP-MS analysis.
Apr 10, · A new natural rutile reference material is presented, suitable for U‐Pb dating and Zr‐in‐rutile thermometry by microbeam methods. U‐Pb dating of rutile R using laser ablation ICP‐MS with both magnetic sector field and quadrupole instruments as well as isotope dilution‐thermal ionisation mass spectrometry yielded a concordia age of ± 2 Ma.
Apatite [Ca5(PO4)3F], titanite [CaTiSiO5], and rutile [TiO2] samples were collected by the U.S. Geological Survey (USGS) from the Coles Hill uranium deposit, Virginia. The samples (in the form of polished thin sections) were prepared and analyzed for direct age dating on a laser ablation inductively coupled plasma mass spectrometer (LA–ICPMS) system at the USGS in Denver, Colorado from.
This study presents new in situ laser ablation-inductively coupled plasma-mass spectrometry U-Pb ages of coexisting hydrothermal monazite and rutile for the Fancha gold deposit in this area, which yielded Pb/ U ages of ± Ma (n = 65, mean square of weighted deviates [MSWD] = ) and ± Ma (n = 37, MSWD =
While this is a commonly reported texture, with a clear interest for dating (Zack et al. ), there is a dearth of successful attempts to U–Pb date both rutile and titanite in such a textural relationship and from the same sample. Dating accessory minerals in such an overgrowth relationship demands in situ analysis: while TIMS analysis is.
We analyze zircon and rutile U-Pb ages and trace elements using LA-ICP-MS and SIMS of eclogites from the North Qaidam ultra-high-pressure metamorphic belt in NW China. Zr-in-rutile and Ti-in-zircon thermometries give consistent peak metamorphic temperatures for two fresh eclogite samples. Zircon and rutile U-Pb dating from the Yuka eclogite yielded ages of ± Ma and ± 16 Ma.
Rutile U-Pb dating is an underexploited provenance method with wide applicability to sedimentary provenance studies. Keywords Rutile U-Pb dating, LA-MC-ICP-MS, detrital thermochronology, sedimentary provenance, Sugluk-4, common Pb correction 1. Introduction Rutile, the most common polymorph of TiO 2, is a widely distributed accessory mineral in.
Mineralogical studies and U-Pb dating have been carried out on rutile included in peridotitic and eclogitic garnets from the Internatsionalnaya pipe, Mirny field, Siberian craton. We also describe a unique peridotitic paragenesis (rutile + forsterite + enstatite + Cr-diopside + Cr-pyrope) preserved in diamond from the Mir pipe, Mirny field. Compositions of rutile from the heavy mineral.
The U–Pb geochronologic analysis of accessory minerals has played an important role in Earth and solar system science in constraining the ages of a wide variety of rocks and minerals. Laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) is one of the most popular techniques for U–Pb geochronologic analysis. Currently, the significant matrix effects observed between.
This study presents monazite and rutile U–Pb and hornblende and biotite 40 Ar/ 39 Ar geochronological data for high-grade rocks of the eastern Grenville-aged Rayner orogen at Mount Brown in order to analyse the extent and degree of Pan-African-aged reworking. Monazite from paragneiss yields U–Pb ages of Ma for larger granular grains and – Ma for smaller globular beads around.
Rutile Usingle bondPb dating, LA-MC-ICP-MS, Detrital thermochronology, Sedimentary provenance, Sugluk-4, Common Pb correction View graph of relations U-Pb LA-(MC)-ICP-MS dating of rutile: new reference materials and applications to sedimentary provenance.
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More recently, we have started to also combined zircon with rutile and apatite U-Pb dating and TE analysis. Clearly, the sky is the limit in terms of how much can a single grain tell us? The project is a combination of combination of field and lab work, with possible provenance studies along rifted and passive continental margins such the Gulf.
Zircon u-pb dating method for geochronology, progress integrating high-precision u-pb dating of speleogenetic dolomite, comparatively to rutile is well constrained due to reliable. Find a weighted mean pb/u date id-tims u-pb zircon and apatite. constraining magma residence timescales by coupling id–tims u–pb dating agency.
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