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作者:John M. Hanchar , Fernando Tornos ...
来源:[J].Mineralium Deposita(IF 2.147), 2017, Vol.52 (8), pp.1223-1244Springer
摘要:Interpretation of the mineralizing environment of magnetite-apatite deposits remains controversial with theories that include a hydrothermal or magmatic origin or a combination of those two processes. To address this controversy, we have analyzed the trace element content of...
作者:... Matthijs C. van Soest , Kip V. Hodges , John M. Hanchar
来源:[J].Geochimica et Cosmochimica Acta(IF 3.884), 2020, Vol.274, pp.45-62
摘要:Abstract(#br)Laser depth profiling of laboratory-induced helium diffusion profiles in natural zircon confirms that helium diffusivity is crystallographically controlled and significantly anisotropic. Experiments on Mud Tank zircon with low degrees of alpha radiation damage (...
作者:... Charlie T. Harper , John M. Hanchar , Christopher R.M. McFarlane
来源:[J].Precambrian Research(IF 4.441), 2020, Vol.339Elsevier
摘要:Abstract(#br)The diopside-allanite veins and apatite breccia veins of the Hoidas Lake LREE deposit cross-cut the deformed Archaean and Paleoproterozoic granitoid gneisses of the Rae Subprovince, in northern Saskatchewan, Canada. The timing and source of this unusual and comp...
作者:John M. Hanchar , Kip V. Hodges
来源:[J].Chemical Geology(IF 3.154), 2020, Vol.538Elsevier
摘要:Abstract(#br)Recent research has demonstrated the importance of understanding alpha radiation damage in zircon in order to effectively interpret the thermochronologic significance of (U-Th)/He dates and to appropriately select laser ablation U/Pb reference standards. Direct ...
作者:John M. Hanchar , Jeffrey D. Vervoort ...
来源:[J].Chemical Geology(IF 3.154), 2020, Vol.539Elsevier
摘要:Abstract(#br)Continued improvements in both ICPMS (inductively-coupled plasma mass spectrometry) and laser ablation technologies are fueling advancements in accessory mineral investigations and their related isotope systems of interest, and are now being applied to a wide range o...
作者:John M. Hanchar , Christopher R. Voisey ...
来源:[J].Chemical Geology(IF 3.154), 2017, Vol.466, pp.303-322Elsevier
摘要:Abstract(#br)The ore genesis of the Paleoproterozoic iron oxide apatite deposits in the vicinity of Kiruna in northern Sweden is poorly understood, despite a century-long mining history and 2500 Mt of iron ore with grades of 30 to 70 wt% Fe produced in the region to date. Zircon ...
作者:John M. Hanchar , Philip M. Piccoli ...
来源:[J].Quaternary International(IF 1.962), 2016Elsevier
摘要:Abstract(#br)The Kenya Rift Valley contains many ochre sources that are currently used by indigenous peoples for adornment, rituals, and art. Ochre pigments occur in rock art and archaeological sites spanning over 250,000 years. Chemical analysis for provenience of geological sou...
作者:Francisco Velasco , Fernando Tornos , John M. Hanchar
来源:[J].Ore Geology Reviews(IF 2.417), 2016, Vol.79, pp.346-366Elsevier
摘要:Abstract(#br)The Pliocene El Laco volcano (northern Chile) hosts a large iron oxide deposit that occurs as stratiform bodies with underlying feeder zones (dykes) hosted by hydrothermally altered andesite lava flows. Phenocrysts in the andesite hosting the mineralization have abun...
作者:John M. Hanchar , Oliver Tschauner
来源:[J].Geochimica et Cosmochimica Acta(IF 3.884), 2016, Vol.177, pp.170-181Elsevier
摘要:Abstract(#br)The complex nature of trace element mobility in subduction zone environments is thought to be primarily controlled by fluid–rock interactions, episodic behavior of fluids released, mineral assemblages, and element partitioning during phase transformations and mi...
作者:... Oliver Jagoutz , John M. Hanchar , Francis O. Dudas
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2013, Vol.366, pp.163-175Elsevier
摘要:Abstract(#br)The Himalayan orogeny, a result of the collision of India and Eurasia, provides direct evidence of strain accommodation and large-scale rheological behavior of the continental lithosphere. Knowledge of the timing of the India–Eurasia collision is essential to un...

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