2018
DOI: 10.1016/j.chemgeo.2017.12.031
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The trace element and U-Pb systematics of metamorphic apatite

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Cited by 125 publications
(123 citation statements)
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“…Metamorphic apatites are commonly characterized by depletion of Th and LREE, particularly in metapelitic samples where apatite coexists with monazite (Spear and Pyle, 2002). The lower La N /Sm N ratios in the c. 2150 Ma apatite component, from the discrete grain analysis, therefore could imply competition from monazite during later apatite growth (Henrichs et al, 2018). However, the elevated Th content in the depth profile rims indicates that at least the outermost rims did not grow with monazite, nor has monazite been identifed by mineral liberation analysis in this sample.…”
Section: Apatite Dissolution and Regrowthmentioning
confidence: 76%
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“…Metamorphic apatites are commonly characterized by depletion of Th and LREE, particularly in metapelitic samples where apatite coexists with monazite (Spear and Pyle, 2002). The lower La N /Sm N ratios in the c. 2150 Ma apatite component, from the discrete grain analysis, therefore could imply competition from monazite during later apatite growth (Henrichs et al, 2018). However, the elevated Th content in the depth profile rims indicates that at least the outermost rims did not grow with monazite, nor has monazite been identifed by mineral liberation analysis in this sample.…”
Section: Apatite Dissolution and Regrowthmentioning
confidence: 76%
“…Nonetheless, apatite is still a very useful U-Pb chronometer as its typical closure temperature of around 375-600°C (Cochrane et al, 2014;Schoene and Bowring, 2007) potentially can provide additional time-temperature constraints on retrograde or lowtemperature prograde processes. Apatite can accommodate high concentrations of REE (Henrichs et al, 2018), Sr,Mn, Na, U, and Th, and other trace elements, making it potentially powerful in charting the trace element chemistry of the rock system (Fleet and Pan, 1997;Gawęda et al, 2014;Mao et al, 2016;Piccoli and Candela, 2002). So, as apatite is highly susceptible to a range of fluid-induced (metasomatic) changes that occur at variable pressures and temperatures (Harlov, 2015;Krenn and Finger, 2004;Nutman, 2007;Spear and Pyle, 2002), its chemistry linked to age may be powerful intracking fluidrock interaction from the deep crust to near surface (Glorie et al, 2017;Henrichs et al, 2018;Kirkland et al, 2017;Schoene and Bowring, 2007).…”
Section: Introductionmentioning
confidence: 99%
“…All of the apatite analyzed are characteristic of growth in igneous environments, as indicated by Th/U > 0.1 and REE content over 50-100 times that of chondritic values (Henrichs et al, 2018). Apatite Sr concentrations display a strong negative correlation with their whole-rock SiO 2 % (Bruand et al, 2017).…”
Section: Detrital Apatite U-pb and Trace Elementsmentioning
confidence: 95%
“…Sr and Ba content in apatite negatively correlates with the degree of melt fractionation and whole-rock SiO 2 contents, while Y, Mn, and HREEs show a positive relationship (Bruand et al, 2017). Metamorphic apatite grains are characterized by significant depletion in LREE and Th (Henrichs et al, 2018). The Eu anomaly in igneous apatite generally tracks the role of plagioclase during melt formation/fractionation prior to apatite crystallization-negative Euanomalies are common in many apatite chondrite-normalized elemental plots and become more negative with fractionation and increased whole-rock SiO 2 content (Belousova et al, 2002a).…”
Section: Apatite U-pb and Trace Element Analysismentioning
confidence: 97%
“… PCA plot of multi‐element data from Tarn samples compared to published bedrock apatite data from the literature (Belousova et al, ; El Korh et al, ; Henrichs et al, ; Hsieh et al, ; Sha & Chappell, ; Tang et al, ). The vectors on the PCA plot were chosen according to known ratios in apatite.…”
Section: Resultsmentioning
confidence: 99%