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Dating xenotime
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SHRIMP U–Pb geochronology of authigenic xenotime and its

A U–Pb date of 765 ± 16 Ma (2s) for xenotime-(Y) overgrowths on zircon obtained by LA–ICP–MS, the first dating of fine overgrowths of xenotime on zircon by this technique, confirms that the

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U-Pb geochronology of monazite and xenotime in hematite

dating of xenotime has received extensive attention and its applications have expanded rapidly. Xenotime [YPO 4] is a common accessory mineral in a variety of rocks, such as pelitic metamorphic rocks, peralu-minous granites and siliciclastic sedimentary rocks. This

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A multi-radioisotope approach to dating sedimentation

The method will be particularly useful in Precambrian terranes, where diagenetic xenotime dating could play a role equivalent to biostratigraphic dating in the Phanerozoic. Reliable 207 Pb/ 206 Pb data are more readily obtained than 206 Pb/ 238 U, which also favours application to the Precambrian.

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Improved calibration procedures and new standards for U

Belt by Xenotime Dating around Pamuru, Prakasam District, Andhra Pradesh SANKHA DAS 1, DEVASHEESH SHUKLA 1,SANTANU BHATTACHARJEE 2 and SUMIT KUMAR MITRA 1 1Geological Survey of India, SU: AP, SR, Project STM, Hyderabad - 500 068 2EPMA Laboratory, Petrology Division, GSI, SR, Hyderabad - 500 068

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Diagenetic xenotime dating to constrain the initial

Read "In situ U–Th–Pb geochronology of monazite and xenotime from the Jack Hills belt: Implications for the age of deposition and metamorphism of Hadean zircons, Precambrian Research" on DeepDyve, the largest online rental service for scholarly research with thousands of …

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Dating xenotime | Schützenhaus Laucha

Read "Diagenetic xenotime dating to constrain the initial depositional time of the Yan-Liao Rift, Precambrian Research" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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(U-Th)/He Dating of Phosphates: Apatite, Monazite, and

This is the first report of in situ dating of fine overgrowths of xenotime-(Y) on zircon by laser abla-tion – inductively coupled plasma – mass spectrometry

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SHRIMP Uranium-Lead Dating of Diagenetic Xenotime in

The in situ secondary ion mass spectrometry dating of monazite and xenotime employed here will lead to better targeting of orogenic gold deposits in the northern Capricorn Orogen, and these techniques can be utilized for orogenic gold exploration worldwide. Timing of hydrothermal activity and gold mineralization. Euhedral xenotime within

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CHIME dating of monazite, xenotime, zircon and polycrase

2 Microprobe analysis and dating of monazite from the Potsdam 3 Formation, NY: A progressive record of chemical reaction and 63 xenotime, is a promising approach for characterizing past fluid interaction events in 64 sedimentary rocks. Monazite (LREE-phosphate) and xenotime (HREE-phosphate) are

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Hydrothermal origin of the Paleoproterozoic

(U-Th)/He Dating of Phosphates: Apatite, Monazite, and Xenotime Kenneth A. Farley Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125

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Monazite and xenotime U-Th-Pb geochronology by ion

Thus, xenotime dating has significant economic application to Precambrian sediment-hosted ore deposits, such as Witwatersrand Au–U, for which there are no precise depositional ages. The growth history of xenotime in the Witwatersrand Supergroup is texturally complex, with several phases evident.

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Monazite and xenotime U–Th–Pb geochronology by ion

U-Pb geochronology of monazite and xenotime in hematite ore deposits, Marquette Range, Michigan: Evidence for multiple episodes of iron mineralization calibration limitations in ion probe U–Pb and Th–Pb dating of monazite: Chemical Geology, v. 270, p. 31-44.

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(U-Th)/He Dating of Phosphates: Apatite, Monazite, and

A biography of the Australian continent. . Capricorn Orogen, Australia – In-situ U-Pb Geochronology of Xenotime and Monazite, Abra Polymetallic Deposit

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Using In Situ SHRIMP U-Pb Monazite and Xenotime

This geochronologic study attempts to determine the age of deposition of the Thunderhead Sandstone by dating overgrowths of xenotime (YPO4) and monazite (CePO4) using SHRIMP U-Pb microanalysis.

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XENOTIME-(Y) FROM CARBONATITE DYKES AT LOFDAL, NAMIBIA

Petroleum resources, coal resources, uranium and thorium resources, geothermal energy, renewable energy resources, basin geology, Acreage Release.

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Dating - Principles of isotopic dating | Britannica.com

A multi-radioisotope approach to dating sedimentation : applying Re-Os organic-rich shale and U-Pb authigenic xenotime dating to the Shannon and Pennine Basins

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The chemical composition of REE-Y-Th-U-rich accessory

Dating has been carried out on xenotime and monazite samples, from a fine-grained granite and the main coarse-grained granite respectively. From . Wikipedia. The element is also found in euxenite and xenotime. From . Wikipedia. Similar compositions are found in xenotime or gadolinite.

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CRYSTALS MINERALS GEMSTONES FOSSILS ROCKS - Facebook

The Belt–Purcell Supergroup, northern Idaho, western Montana, and southern British Columbia, is a thick succession of Mesoproterozoic sedimentary rocks with an age range of about 1470–1400 Ma. Stratigraphic layers within several sedimentary units were sampled to apply the new technique of U–Pb dating of xenotime that sometimes forms as rims on detrital zircon during burial diagenesis

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ISOTOPIC CONSTRAINTS ON THE TIME OF DEPOSITION OF THE

Monazite and xenotime U–Th–Pb geochronology by ion microprobe: dating highly fractionated granites at Xihuashan tungsten mine, SE China

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Age Constraints of Udayagiri Domain of Nellore Schist Belt

The chemical composition of REE-Y-Th-U-rich accessory minerals in peraluminous granites of the Erzgebirge-Fichtelgebirge region, Germany. Part II: Xenotime HANS-JU¨RGEN FO¨RSTER* GeoForschungsZentrum Potsdam, Telegrafenberg, D-14473 Potsdam, Germany great potential for age dating, xenotime rarely has been used for either conventional (Ko

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UMass Probe-Xenotime

(Hanchar and Hoskin, 2003), 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- year with the dating method listed in the title, as recorded on the web of knowledge (www.webofknowledge.com

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Xenotime | Geology Wiki | FANDOM powered by Wikia

Monazite geochronology is a dating technique to study geological history using the mineral monazite. It is a powerful tool in studying the complex history of metamorphic rocks particularly, as well as igneous , sedimentary and hydrothermal rocks.

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Rare-earth elements in synthetic zircon: Part 2. A single

Constraints from in situ SHRIMP U-Pb dating of monazite and xenotime by Birger Rasmussen, Ian R. Fletcher, Janet R. Muhling, Andreas G. Mueller, Greg C. Hall SHRIMP mount preparation One sample was prepared as a grain-mount; all others were sets of core-drilled discs (usually ~3 mm diameter) or fragments of polished thin

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Xenotime - Wikipedia

Dating - Principles of isotopic dating: All absolute isotopic ages are based on radioactive decay, a process whereby a specific atom or isotope is converted into another specific atom or isotope at a constant and known rate. Most elements exist in different atomic forms that are identical in their chemical properties but differ in the number of neutral particles—i.e., neutrons—in the nucleus.

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Bushveld-aged fluid flow, peak metamorphism and gold

Research published in the past decade demonstrated that diagenetic xenotime is an ideal mineral for dating siliciclastic rocks (Rasmussen 2005 31. Rasmussen , B. 2005. Radiometric dating of sedimentary rocks: the application of diagenetic xenotime geochronology.