Portales Valley

Noble gases, cosmic ray exposure and radiogenic ages in selected ordinary chondrites

20/06/2022 22:56 · by karmaka · in cosmic ray exposure age (CRE), H, L, noble gases, ordinary chondrite

Ramakant R. Mahajan Advances in Space ResearchIn Press, Journal Pre-proof, Available online 20 June 2022 LINK “Highlights • Cosmic ray exposure ages of the ordinary chondrites are estimated.• The exposure ages range between 5 to…

Noble gases and nitrogen in metal from the ordinary chondrites Katol (L6), Itawa Bhopji (L3-5) and Portales Valley (H6)

24/07/2020 20:07 · by karmaka · in H, L, noble gases, ordinary chondrite

Ramakant R. Mahajan Astrophysics and Space Science, Volume 365, Article number: 130 (2020) LINK “This is the first report of coupled noble gases (He, Ne, Ar, Kr and Xe) and nitrogen isotopic results in metal…

Age and origin of IIE iron meteorites inferred from Hf-W chronology

29/07/2019 13:13 · by karmaka · in IIE, iron, parent body

Thomas S. Kruijer, Thorsten Kleine Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 29 July 2019 LINK “Non-magmatic iron meteorites, including the IIE group, can provide important insights into the history of metal-silicate…

Electron Backscatter Diffraction (EBSD) study of seven heavily metamorphosed chondrites: Deformation systematics and variations in pre-shock temperature and post-shock annealing

18/05/2018 17:36 · by karmaka · in H, L, LL, ordinary chondrite, shock metamorphism, thermal metamorphism

Electron Backscatter Diffraction (EBSD) study of seven heavily metamorphosed chondrites: Deformation systematics and variations in pre-shock temperature and post-shock annealing Alex M. Ruzicka, Richard C. Hugo, Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available…

Relationships among physical properties as indicators of high temperature deformation or post-shock thermal annealing in ordinary chondrites

11/01/2017 06:56 · by karmaka · in asteroid, H, L, ordinary chondrite, shock metamorphism

Jon M. Friedrich, Alex Ruzicka, Robert J. Macke, James O. Thostenson, Rebecca A. Rudolph, Mark L. Rivers, Denton S. Ebel Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 11 January 2017 LINK “Collisions…

Formation of non-magmatic iron-meteorite group IIE

29/10/2016 09:11 · by karmaka · in H, IIE, iron, ordinary chondrite

John T. Wasson Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 29 October 2016 LINK “Instrumental neutron-activation (INAA) data for metal in 22 nonmagmatic IIE meteorites show narrow ranges in Ir and other…

Deformation and thermal histories of ordinary chondrites: Evidence for post-deformation annealing and syn-metamorphic shock

23/04/2015 20:03 · by karmaka · in L, ordinary chondrite, shock metamorphism

Alex Ruzicka, Richard Hugo, Melinda Hutson Geochimica et Cosmochimica Acta In Press, available online 23 April 2015 doi:10.1016/j.gca.2015.04.030 LINK