Effect of orientation on ion track formation in apatite and zircon

Li, Weixing; Kluth, Patrick; Schauries, Daniel; Rodríguez, Matías; Lang, Maik; Zhang, F.X.; Zdorovets, Maxim V.; Trautmann, C.; Ewing, Rodney C.

doi:10.2138/am.2014.4669

Cited by 28 publications

(14 citation statements)

References 25 publications

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“…It is important to note that this effect should be present in most crystalline materials, as they often possess different values for the thermal conductivity in different crystallographic directions. This could possibly explain similar differences observed in quartz [29,30] and apatite [45]. To resolve the small magnitude of such differences, however, requires accurate measurements of the track radii such as those attainable by SAXS.…”

Section: Thermal-spike Modelmentioning

confidence: 86%

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Mota‐Santiago

Rodríguez

et al. 2016

J. Mater. Res.

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Section: Thermal-spike Modelmentioning

confidence: 86%

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Mota‐Santiago

Rodríguez

et al. 2016

J. Mater. Res.

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“…Annealing of FTs in apatite and zircon is primarily a function of the thermal history and grain chemistry (Barbarand et al, 2003;Carlson et al, 1999;Green et al, 1986;Ketcham et al, 1999;Ketcham et al, 2007;Tagami et al, 1998;Yamada et al, 1995). More specifically, FTs anneal by temperature-controlled atomic diffusion, observed from the microscopic to atomic scales (Barbarand et al, 2003;Laslett et al, 1987;Li et al, 2011;Li et al, 2014). The T c for the AFT and ZFT systems are~80-120°C and~180-250°C (e.g., Bernet, 2009;Ketcham et al, 2007;Figure 1).…”

Section: Ft Thermochronometrymentioning

confidence: 99%

Innovations in (U–Th)/He, Fission Track, and Trapped Charge Thermochronometry with Applications to Earthquakes, Weathering, Surface‐Mantle Connections, and the Growth and Decay of Mountains

2019

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A transformative advance in Earth science is the development of low‐temperature thermochronometry to date Earth surface processes or quantify the thermal evolution of rocks through time. Grand challenges and new directions in low‐temperature thermochronometry involve pushing the boundaries of these techniques to decipher thermal histories operative over seconds to hundreds of millions of years, in recent or deep geologic time and from the perspective of atoms to mountain belts. Here we highlight innovation in bedrock and detrital fission track, (U–Th)/He, and trapped charge thermochronometry, as well as thermal history modeling that enable fresh perspectives on Earth science problems. These developments connect low‐temperature thermochronometry tools with new users across Earth science disciplines to enable transdisciplinary research. Method advances include radiation damage and crystal chemistry influences on fission track and (U–Th)/He systematics, atomistic calculations of He diffusion, measurement protocols and numerical modeling routines in trapped charge systematics, development of 4He/3He and new (U–Th)/He thermochronometers, and multimethod approaches. New applications leverage method developments and include quantifying landscape evolution at variable temporal scales, changes to Earth's surface in deep geologic time and connections to mantle processes, the spectrum of fault processes from paleoearthquakes to slow slip and fluid flow, and paleoclimate and past critical zone evolution. These research avenues have societal implications for modern climate change, groundwater flow paths, mineral resource and petroleum systems science, and earthquake hazards.

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“…For purposes of estimating bulk-mineral properties and percolation, the damaged domain of a single α-recoil has been variously modeled as a sphere as small as 3 nm in diameter (Trachenko et al 2003(Trachenko et al , 2004Palenik et al 2003) or a cylinder up to 2.5 nm diameter × 40 nm long (Jonckheere and Gögen 2001; Ketcham et al 2013), but the boundaries are indistinct and damage can extend further. Domains of α-recoil damage and single fission tracks have been imaged by TEM (Miller and Ewing 1993;Ewing et al 2003;Utsunomiya et al 2004;Li et al 2014). However, the shape of the path of highest defect density and processes of defect recombination are not well understood.…”

Section: Radiation Damage In Zirconmentioning

confidence: 99%

Nano- and micro-geochronology in Hadean and Archean zircons by atom-probe tomography and SIMS: New tools for old minerals

Valley

Reinhard

Cavosie

et al. 2015

American Mineralogist

114

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Atom-probe tomography (APT) and secondary ion mass spectrometry (SIMS) provide complementary in situ element and isotope data in minerals such as zircon. SIMS measures isotope ratios and trace elements from 1-20 μm spots with excellent accuracy and precision. APT identifies mass/ charge and three-dimensional position of individual atoms (±0.3 nm) in 100 nm-scale samples, volumes up to one million times smaller than SIMS. APT data provide unique information for understanding element and isotope distribution; crystallization and thermal history; and mechanisms of mineral reaction and exchange. This atomistic view enables evaluation of the fidelity of geochemical data for zircon because it provides new understanding of radiation damage, and can test for intracrystalline element mobility. Nano-geochronology is one application of APT in which Pb isotope ratios from sub-micrometer domains of zircon provide model ages of crystallization and identify later magmatic and metamorphic reheating.Based on SEM imaging and SIMS analysis, 11 needle-shaped specimens ~100 nm in diameter were sampled from one Archean and two Hadean zircons by focused ion-beam milling and analyzed with APT. The three-dimensional distribution of Pb and nominally incompatible elements (Y, REEs) differs at the atomic scale in each zircon. Zircon JH4.0 (4.007 Ga, Jack Hills, Western Australia) is homogeneous in Pb, Y, and REEs. In contrast, Pb and Y and REEs are clustered in sub-equant ~10 nm diameter domains, spaced 10-40 nm apart in zircons ARG2.5 (2.542 Ga, Grouse Creek Mountains, Utah) and JH4.4 (4.374 Ga, Jack Hills). Most clusters are flattened parallel to (100) or (010). U and Th are not collocated with Pb in clusters and appear to be homogeneously distributed in all three zircons. The analyzed domains experienced 4 to 8 × 10 15 α-decay events/mg due to U and Th decay and yet all zircons yield U-Pb ages by SIMS that are better than 97% concordant, consistent with annealing of most radiation damage. The 207 Pb/ 206 Pb ratios for the 100 nm-scale specimens measured by APT average 0.17 for ARG2.5, 0.42 for the JH4.0, and 0.52 for JH4.4. These ratios are less precise (±10-18% 2σ) due to the ultra-small sample size, but in excellent agreement with values measured by SIMS (0.1684, 0.4269, and 0.5472, respectively) and the crystallization ages of the zircons. Thus Pb in these clusters is radiogenic, but unsupported, meaning that the Pb is not spatially associated with its parent isotopes of U and Th. For the domain outside of clusters in JH4.4, the 207 Pb/ 206 Pb ratio is 0.3, consistent with the SIMS value of 0.2867 for the zircon overgrowth rim and an age of 3.4 Ga. In ARG2.5, all Pb is concentrated in clusters and there is no detectable Pb remaining outside of the clusters. The Pb-Y-REE-rich clusters and lack of correlation with U in ARG2.5 and JH4.4 are best explained by diffusion of Pb and other elements into ~10 nm amorphous domains formed by α-recoil. Diffusion distances of ~20 nm for these elements in crystalline zircon are consistent with heatin...

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Effect of orientation on ion track formation in apatite and zircon

Cited by 28 publications

References 25 publications

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Innovations in (U–Th)/He, Fission Track, and Trapped Charge Thermochronometry with Applications to Earthquakes, Weathering, Surface‐Mantle Connections, and the Growth and Decay of Mountains

Nano- and micro-geochronology in Hadean and Archean zircons by atom-probe tomography and SIMS: New tools for old minerals

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