40Ar/39Ar Thermochronology of Detrital Minerals

Hodges, Kip; Ruhl, Katharine C.; Wobus, Cameron; Pringle, Malcolm S.

doi:10.2138/rmg.2005.58.9

Cited by 59 publications

(26 citation statements)

References 83 publications

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“…U‐Pb dating of zircon is among the most popular of these techniques due to the robust chemical and physical properties of zircon and its abundance in the sedimentary record. However, the closure temperature of zircon is sufficiently high that the U‐Pb age reflects crystallization ages of the mineral and its source and may not be indicative of tectonic events in the sediment source region [ Hodges , ]. In particular, zircon's propensity to survive multiple orogenic cycles means that several zircon U‐Pb age populations are not necessarily diagnostic of several source terranes [ Haines et al ., ].…”

Section: Methods and Resultsmentioning

confidence: 99%

Zircon (U‐Th)/He thermochronology of Neoproterozoic strata from the Mackenzie Mountains, Canada: Implications for the Phanerozoic exhumation and deformation history of the northern Canadian Cordillera

et al. 2016

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Sedimentary strata of the Neoproterozoic Mackenzie Mountains Supergroup (MMSG) and Windermere Supergroup (WSG) occupy the cores of anticlines in the Mackenzie Mountains of the Canadian Cordilleran Foreland Belt. Stratigraphic and structural evidence suggest that these rocks have undergone several episodes of burial and unroofing relatively intact. We report single‐grain detrital muscovite 40Ar/39Ar and zircon (U‐Th)/He (ZHe) data from a suite of samples across the fold‐thrust belt and the Neoproterozoic stratigraphic record. The strata have not reached high enough temperatures to reset the muscovite 40Ar/39Ar system, and instead our detrital muscovite data refine Tonian‐Cryogenian depositional ages. Single‐crystal ZHe dates range from 432 ± 35 to 46 ± 4 Ma, indicating that MMSG and WSG strata have not been heated sufficiently to fully reset the ZHe system. These factors make the Neoproterozoic strata an attractive natural laboratory to test the utility of the zircon radiation damage and annealing model on the quantification of thermal histories from detrital zircon populations that have accumulated radiation damage over long geologic timescales. Thermal modeling reveals that (1) a substantial sedimentary package was deposited following the Devonian and removed during Permo‐Triassic cooling, and (2) the Cordilleran deformation front propagated through the study area from the Albian to the Paleocene, with a moderate increase in cooling rates between 75–67 Ma in the southwest and 60–55 Ma at the deformation front. Ultimately, relationships between radiation damage and helium diffusion kinetics in zircon explain substantial ZHe date dispersion and elucidate the temperature‐time history of the northern Canadian Cordillera.

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Section: Methods and Resultsmentioning

confidence: 99%

Zircon (U‐Th)/He thermochronology of Neoproterozoic strata from the Mackenzie Mountains, Canada: Implications for the Phanerozoic exhumation and deformation history of the northern Canadian Cordillera

et al. 2016

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“…These developments mirror innovation in moderate (i.e., 40 Ar– 39 Ar; e.g., Lovera et al, ) and high temperature (i.e., U–Pb; e.g., Blackburn et al, ; Cochrane et al, ; Schoene & Bowring, ) thermochronometry systems, as well as the development of noble gas paleothermometry (e.g., Tremblay et al, ; Tremblay et al, ), which are not the focus of this contribution. Ongoing work in 40 Ar– 39 Ar and U–Pb thermochronometry and noble gas paleothermometry enable researchers to tackle a range of Earth science problems from crustal deformation to surface processes and mountain building (e.g., Gottardi et al, ; Hodges et al, ; Resor et al, ; Schneider et al, ; Tremblay et al, ; van der Pluijm et al, ; and many others).…”

Section: Thermochronometry and Earth Processesmentioning

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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“…40 Ar/ 39 Ar single-grain dating of detrital white mica 40 Ar/ 39 Ar dating of detrital white mica is a perfect tool (1) to demonstrate palaeogeographic relationships (e.g., Dallmeyer and Neubauer, 1994), (2) to constrain tectonic processes in the hinterland of sedimentary basins (Hodges et al, 2005;Kelley and Bluck, 1992); and (3) dynamics of sedimentary basins (Hodges et al, 2005;Najman et al, 2001). Dating is particularly useful when single grains are analysed, which avoids problems caused by mixing of different populations of different age (Copeland and Harrison, 1990;Najman et al, 2001;Neubauer et al, 2007).…”

Section: Introductionmentioning

confidence: 99%