Results 1 to 10 of about 1,154,465 (152)
DFENS: Diffusion Chronometry Using Finite Elements and Nested Sampling
Geochemistry, Geophysics, Geosystems, 2021 In order to reconcile petrological and geophysical observations of magmatic processes in the temporal domain, the uncertainties in diffusion timescales need to be rigorously assessed.
Euan J. F. Mutch +4 more
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Diffusion chronometry and the timescales of magmatic processes [PDF]
Nature Reviews Earth & Environment, 2020 Volcanic eruptions can represent major societal hazards. Placing tighter bounds on the timescales of magmatic processes that precede eruptions is, therefore, important for volcano monitoring and forecasting. Diffusion chronometry, where volcanic crystals that contain chemical gradients are treated as time capsules, allows the timescale of various ...
Thomas Shea +2 more
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Leveraging radioisotope geochronology and diffusion chronometry to trace the thermal evolution of magmatic systems [PDF]
National Science ReviewTime scales determined by radioisotope geochronology and diffusion chronometry for the same magmatic systems have shown variable degrees of discrepancy. We show in this paper that this could be due to the different temperature ranges that the two types of chronometers are effectively sampling, therefore combining them will help to trace the thermal ...
Weiran Li, Fidel Costa
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Cooling rates and melt extraction timescales determined by diffusion chronometry on shallow crustal plutonic rocks [PDF]
Contributions To Mineralogy and PetrologyAbstract Diffusion chronometry has emerged as a valuable tool to track the timescales of magmatic processes and is now routinely applied on erupted volcanic products to infer crystal residence times and mixing-to-eruption timescales. Despite some attempts to apply such a technique to plutonic rocks, slow cooling in these systems complicates ...
Anne-Sophie Bouvier +2 more
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Diffusion chronometry of volcanic rocks: looking backward and forward
Bulletin of Volcanology, 2022 AbstractDiffusion of elements that result in compositional zoning in minerals in volcanic rocks may be used to determine the timescales of various volcanic processes (e.g., residence times in different reservoirs, ascent rates of magmas). Here, we introduce the tool and discuss the reasons for its gain in popularity in recent times, followed by a ...
Ralf Dohmen, Sumit Chakraborty
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Carbonate-capped seamount subduction accelerates CO2-rich arc magma ascent [PDF]
Nature CommunicationsSubduction transports carbon into Earth’s interior, yet how subducted carbon influences arc magma ascent dynamics remains unclear. Here we combine volatile compositions of olivine-hosted melt inclusions with olivine diffusion chronometry at Pagan volcano
Xiaohan Huang +6 more
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Multiple mush generations provide insight into the longevity of open-conduit basaltic volcanoes [PDF]
Scientific ReportsInvestigating the dynamics and timescales of magmatic processes in open-conduit basaltic volcanoes is crucial for improving our understanding of explosive eruptions and better assessing volcanic hazards.
Beatrice Schiavon +9 more
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Timescales of mixing and mobilisation in the Bishop Tuff magma body: perspectives from diffusion chronometry [PDF]
Contributions To Mineralogy and Petrology, 2014 We present two-feldspar thermometry and diffusion chronometry from sanidine, orthopyroxene and quartz from multiple samples of the Bishop Tuff, California, to constrain the temperature stratification within the pre-eruptive magma body and the timescales of magma mixing prior to its evacuation.
Colin Wilson +2 more
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Ascent rate of the Udachnaya-East kimberlite melts from olivine diffusion chronometry
Earth and Planetary Science Letters, 2023 Kimberlite melts are low volume, volatile-rich melts formed in the asthenosphere at depth >150-250 km. Due to their low viscosity and the exsolution of CO2 triggered by their interaction with the sub-cratonic mantle, these melts are highly buoyant and rise rapidly through the lithosphere, ultimately reaching the surface and erupting at sonic to ...
Olga Ageeva +2 more
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Frontiers in Earth ScienceDiffusion chronometry is a technique gaining interest in the scientific community related to volcanology and petrology; however, modelling can be challenging for non-expert users.
Eduardo Morgado, Daniel J. Morgan
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