Search Results - "Mauricio Ibáñez‐Mejia"

Optimization of a Laser Ablation‐Single Collector‐Inductively Coupled Plasma‐Mass Spectrometer (Thermo Element 2) for Accurate, Precise, and Efficient Zircon U‐Th‐Pb Geochronology by Alex Pullen, Mauricio Ibáñez‐Mejia, George E. Gehrels, Dominique Giesler, Mark Pecha

“…Abstract Many applications specific to detrital mineral U‐Th‐Pb geochronology in the Earth sciences necessitate large numbers of age observations to be made…”
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Linking Late Cretaceous to Eocene Tectonostratigraphy of the San Jacinto Fold Belt of NW Colombia With Caribbean Plateau Collision and Flat Subduction by Mora, J. Alejandro, Oncken, Onno, Le Breton, Eline, Ibánez‐Mejia, Mauricio, Faccenna, Claudio, Veloza, Gabriel, Vélez, Vickye, Freitas, Mario, Mesa, Andrés

“…Collision with and subduction of an oceanic plateau is a rare and transient process that usually leaves an indirect imprint only. Through a…”
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Extreme Zr stable isotope fractionation during magmatic fractional crystallization by Ibañez-Mejia, Mauricio, Tissot, François L H

“…Zirconium is a commonly used elemental tracer of silicate differentiation, yet its stable isotope systematics remain poorly known. Accessory phases rich in Zr…”
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Petrology and geochronology of a suite of pelitic granulites from parts of the Chotanagpur Granite Gneiss Complex, eastern India: Evidence for Stenian‐Tonian reworking of a late Paleoproterozoic crust by Dey, Anindita, Karmakar, Shreya, Ibanez‐Mejia, Mauricio, Mukherjee, Subham, Sanyal, Sanjoy, Sengupta, Pulak, Chalapathi Rao, N. V.

“…The north‐eastern part of the Chotanagpur Granite Gneiss Complex (CGGC) in the East Indian shield contains enclaves of migmatitic pelitic granulites (PG)…”
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Structure and age of the Lower Magdalena Valley basin basement, northern Colombia: New reflection-seismic and U-Pb-Hf insights into the termination of the central andes against the Caribbean basin by Mora-Bohórquez, J. Alejandro, Ibánez-Mejia, Mauricio, Oncken, Onno, de Freitas, Mario, Vélez, Vickye, Mesa, Andrés, Serna, Lina

“…Detailed interpretations of reflection seismic data and new U-Pb and Hf isotope geochemistry in zircon, reveal that the basement of the Lower Magdalena Valley…”
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GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U‐Pb Geochronology and Hf Isotopic Analysis of Zircon by Eddy, Michael P., Ibañez‐Mejia, Mauricio, Burgess, Seth D., Coble, Matthew A., Cordani, Umberto G., DesOrmeau, Joel, Gehrels, George E., Li, Xianhua, MacLennan, Scott, Pecha, Mark, Sato, Kei, Schoene, Blair, Valencia, Victor A., Vervoort, Jeffrey D., Wang, Tiantian

“…We present multitechnique U‐Pb geochronology and Hf isotopic data from zircon separated from rapakivi biotite granite within the Eocene Golden Horn batholith…”
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Structural analysis combined with new geothermobarometric and geochronological results of the Além Paraíba shear zone, between Três Rios and Bananal, Ribeira Orogen, SE Brazil by Jaramillo Giraldo, Samuel, Trouw, Rudolph Allard Johannes, Duffles, Patricia, Vinagre da Costa, Rodrigo, Ibañez Mejia, Mauricio, Schwantes Marimon, Rodrigo

“…The Além Paraíba Shear Zone (APSZ) is composed of subvertical mylonites trending ENE/WSW with subhorizontal stretching lineation indicative of dextral…”
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A lunar core dynamo limited to the Moon's first ~140 million years by Zhou, Tinghong, Tarduno, John A, Cottrell, Rory D, Neal, Clive R, Nimmo, Francis, Blackman, Eric G, Ibañez-Mejia, Mauricio

“…Single crystal paleointensity (SCP) reveals that the Moon lacked a long-lived core dynamo, though mysteries remain. An episodic dynamo, seemingly recorded by…”
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Near-collapse of the geomagnetic field may have contributed to atmospheric oxygenation and animal radiation in the Ediacaran Period by Huang, Wentao, Tarduno, John A., Zhou, Tinghong, Ibañez-Mejia, Mauricio, Dal Olmo-Barbosa, Laércio, Koester, Edinei, Blackman, Eric G., Smirnov, Aleksey V., Ahrendt, Gabriel, Cottrell, Rory D., Kodama, Kenneth P., Bono, Richard K., Sibeck, David G., Li, Yong-Xiang, Nimmo, Francis, Xiao, Shuhai, Watkeys, Michael K.

“…Earth’s magnetic field was in a highly unusual state when macroscopic animals of the Ediacara Fauna diversified and thrived. Any connection between these…”
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Drivers of zirconium isotope fractionation in Zr-bearing phases and melts: The roles of vibrational, nuclear field shift and diffusive effects by Méheut, Merlin, Ibañez-Mejia, Mauricio, Tissot, François L.H.

“…Conflicting results exist regarding the mechanisms, direction, and magnitude of Zr isotope fractionation in igneous systems. To better understand the origin of…”
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The survival of tracers of primordial mantle heterogeneity investigated through 142Nd/144Nd and 3He/4He isotope decoupling in the Gorgona Island lavas by Hyung, Eugenia, Ibañez-Mejia, Mauricio, Rojas-Agramonte, Yamirka

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Reliability of detrital marine sediments as proxy for continental crust composition: The effects of hydrodynamic sorting on Ti and Zr isotope systematics by Klaver, Martijn, MacLennan, Scott A., Ibañez-Mejia, Mauricio, Tissot, François L.H., Vroon, Pieter Z., Millet, Marc-Alban

“…The isotopic composition of the detrital sediment record harbours a valuable proxy for estimating the composition of the erodible upper crust since the…”
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Zirconium stable isotope fractionation during intra-crustal magmatic differentiation in an active continental arc by Zieman, Lisa J., Ibañez-Mejia, Mauricio, Tissot, François L.H., Tompkins, Hannah G.D., Pardo, Natalia, Bloch, Elias M.

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Widespread silicic and alkaline magmatism synchronous with the Deccan Traps flood basalts, India by Basu, Asish R., Chakrabarty, Puloma, Szymanowski, Dawid, Ibañez-Mejia, Mauricio, Schoene, Blair, Ghosh, Nilotpal, Georg, R. Bastian

“…•First U-Pb ages from five silicic-alkalic magmatic complexes within the Deccan LIP.•They occur along the Narmada lineament, over 500 km from center to NW LIP…”
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Uranium oxidation states in zircon and other accessory phases by Houchin, Shane K., Tissot, François L.H., Ibañez-Mejia, Mauricio, Newville, Matthew, Lanzirotti, Antonio, Pavia, Frank, Rossman, George

“…Zircon and other U-bearing accessory phases are important time-capsules for studying the evolution of Earth and other planetary bodies as these minerals can…”
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Temperature and co-crystallization effects on Zr isotopes by Kirkpatrick, Heather M., Harrison, T. Mark, Ibañez-Mejia, Mauricio, Tissot, François L.H., MacLennan, Scott A., Bell, Elizabeth A.

“…We undertook Zr isotope measurements on zircon, titanite, biotite, amphibole, and whole rocks from the La Posta pluton (Peninsular Ranges, southern California)…”
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Recent crustal foundering in the Northern Volcanic Zone of the Andean arc: Petrological insights from the roots of a modern subduction zone by Bloch, Elias, Ibañez-Mejia, Mauricio, Murray, Kendra, Vervoort, Jeffrey, Müntener, Othmar

“…Periodic loss of the lower lithosphere into the convecting mantle due to gravitational instability is postulated to be a major mechanism for lithosphere…”
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Tectonic domains in the NW Amazonian Craton from geophysical and geological data by Moyano-Nieto, Ismael E., Prieto, Germán A., Ibañez-Mejia, Mauricio

“…•First regional reconstruction of crustal-scale features in NW Amazonian Craton.•Geophysical and geological integration allows the definition of 5 tectonic…”
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Mineralogy, geochronology, and geochemistry of the calc-alkaline Um Takha white granite pluton, South Sinai, Egypt by Osman, Madiha S.M., Azer, Mokhles K., Asimow, Paul D., Price, Jason B., Ibañez-Mejia, Mauricio

“…The Um Takha white granite pluton (UTP) is exposed in west central Sinai (Egypt), in the northernmost segment of the Neoproterozoic Arabian-Nubian Shield…”
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Hadaean to Palaeoarchaean stagnant-lid tectonics revealed by zircon magnetism by Tarduno, John A., Cottrell, Rory D., Bono, Richard K., Rayner, Nicole, Davis, William J., Zhou, Tinghong, Nimmo, Francis, Hofmann, Axel, Jodder, Jaganmoy, Ibañez-Mejia, Mauricio, Watkeys, Michael K., Oda, Hirokuni, Mitra, Gautam

“…Plate tectonics is a fundamental factor in the sustained habitability of Earth, but its time of onset is unknown, with ages ranging from the Hadaean to…”
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