U-Th-Pb dating
LA ICP MS U Th Pb dating and trace element geochemistry of allanite: implications on the different skarn metallogenesis between the giant Beiya au and Machangqing Cu Mo (Au) deposits in Yunnan, SW China
... age dating material ...allanite dating and trace element analyses have not been widely used to investigate hydrothermal ...allanite U-Th-Pb dating [11,12], and to use allanite as ...
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Geochemical Characteristics and Chemical Electron Microprobe U Pb Th Dating of Pitchblende Mineralization from Gabal Gattar Younger Granite, North Eastern Desert, Egypt
... gests that volcanic rocks were probably the source of such a deposit. High level emplaced high-K Calc-alkaline plutons as Qattar granite may have been associated with their volcanic equivalent emplaced in the surrounding ...
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Quantifying exhumation at the giant Pulang porphyry Cu Au deposit ssing U Pb He dating
... In general, three to five single zircon and apatite grains were analyzed for each sample. The detailed results are given in Electronic Appendix Tables A3 and A4, and a summary with the weighted mean age for each sample ...
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Combined apatite fission track and U Pb dating by LA ICPMS and its application in apatite provenance analysis
... dating of the same zircon grains suggests that over 95% of the zircon is derived from the Himalaya or Tibetan Plateau, suggesting the majority of Indus and Ganges zircon grains were originally recycled from older ...
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LA ICP MS U Pb dating and REE patterns of apatite from the Tatra Mountains, Poland as a monitor of the regional tectonomagmatic activity
... “model” U-Th-Pb fractionation curve to the time-resolved standard data and the ...the U-Pb reference stand- ards. Common Pb in the primary apatite standard was corrected using ...
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U Pb and Th Pb dating of apatite by LA ICPMS
... Samples were mounted on 2.5 cm diameter epoxy disks and analysed using a Thermo ELEMENT XR double focusing magnetic sector field ICP-MS in combination with a Geolas 193 nm ArF Excimer laser located in the Inco Innovation ...
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Th-U-total Pb timing constraints on the emplacement of the granitoid pluton of Stolpen, Germany
... of Pb by F-bearing fluids (Williams et ...in Th, U and Pb, the age calculated for spots 4 and 5 is older than for the rest of the grain as well as the majority of measured ...of Th from ...
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Geochemistry and Geochronology of Peraluminous High K Granitic Leucosomes of Yaoundé Series (Cameroon): Evidence for a Unique Pan African Magmatism and Melting Event in North Equatorial Fold Belt
... PANEFB. Th-U-Pb dating by electron microprobe (EMP) and LA-ICP-MS U-Pb dating on zircon have been used to constraints the melting event and emplacement of leucosomes in ...
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SHRIMP zircon U Pb dating of the mafic and felsic intrusive rocks of the Saza area in the Lupa goldfields, southwestern Tanzania: Implication for gold mineralization
... SHRIMP U-Th-Pb analytical data for zircons from the Saza granodiorite sample SAZ 06 and mafic dyke sample SAZ 02 are reported in Table 2. Zircon grains from sam- ple SAZ 06 vary from ovoid (Zr 1) to ...
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The tectonics of the Arkansas river region, Colorado, USA
... Cao Introduction and Thesis Outline This thesis uses the measurement of FIAs foliation intersection axes preserved within porphyroblasts and chemical U-Th-Pb monazite dating of the FIA s[r] ...
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Do U/Pb SHRIMP Dating and Pb Stepwise Leaching (PbSL) Analyses Confirm the Lack of Precambrian Basement Outcrops in Thailand?
... the Pb/U ratios were norma- lized relative to a value of ...206 Pb/ 238 U ratio of FC1 reference zircons, equivalent to an age of ...([32]). U and Th concentrations were ...
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Chemical U Th Pb monazite dating and the Proterozoic history of King Island, southeast Australia
... relationships within Grenville -age events in Australia, Antarctica and Laurentia. They recognised two stages of events, an earlier 1300 Ma event and a later 1100 -1000 Ma event in Mesoproterozoic Australia and ...
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Slope Year for the U Pb Dating Method and Its Applications
... (1988) Pb Isotope Constraints on the Age of Sulfide Ore Deposition and U-Pb Age of Late Uraninite Veining at the Musoshi Stratiform Copper Deposit, Central African Copper Belt, ...Microprobe ...
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LA ICP MS U Pb apatite dating of Lower Cretaceous rocks from teschenite picrite association in the Silesian unit (southern Poland)
... “model” U-Th-Pb fractionation curve to the time-re- solved standard data and the ...the U-Pb reference standards. Common Pb in the apatite standards was corrected using the 207 ...
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U Pb LA ICPMS dating using accessory mineral standards with variable common Pb
... advanced U-Pb geochronology data reduction and visualisation ...Iolite U-Pb geochronology DRS (Paton et al. 2010) by calculating 207 Pb ⁄ 206 Pb ages and common Pb ...
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Capability of U–Pb dating of zircons from Quaternary tephra: Jemez Mountains, NM, and La Sal Mountains, UT, USA
... We performed sample preparation for cathodolumines- cence (CL) images, LA-ICP-MS (laser ablation with induc- tively coupled plasma mass spectrometry) U–Pb analyses, and age calculations at the Geochronology ...
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Dating agpaitic rocks : a multi system (U/Pb, Sm/Nd, Rb/Sr and 40Ar/39Ar) isotopic study of layered nepheline syenites from the Ilímaussaq complex, Greenland
... Since U-Pb age determination of zircon and baddeleyite are one of the main tools of geochronology, obtaining precise and accurate age constraints from agpaitic rocks in which these minerals are absent is a ...
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Anticlockwise P T evolution at ∼280 Ma recorded from ultrahigh temperature metapelitic granulite in the Chinese Altai orogenic belt, a possible link with the Tarim mantle plume?
... 2 The SHRIMP zircon U-Pb age dating yielded a concordant age of 278 ± 2 Ma, and supported that the UHT metamorphic event in the Chinese Altai occurred in the Permian... 3 The UHT metamor[r] ...
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PubMedCentral-PMC5342656.pdf
... integrated U-Pb date and Hf isotopes on detrital zircon grains from globally dis- tributed siliciclastic sediments (database ...combined U-Pb and Hf isotopes on detrital zircon grains (see ...
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Dating of Precambrian Metasedimentary Rocks and Timing of their Metamorphism in the Soursat Metamorphic Complex (NW IRAN): Using LA–ICP-MS, U–Pb Dating of Zircon and Monazite
... The Soursat Metamorphic Complex (SMC) is one of the polyphase metamorphic terrenes in northern Sanandaj-Sirjan Metamorphic belt of Iran (Fig. 1). SMC is in tectonic contact with Precambrian to Paleozoic sedimentary rocks ...
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