Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Joseph Knafelc"'
Autor:
Joseph Knafelc, Scott E. Bryan, Michael W. M. Jones, David Gust, Guil Mallmann, Henrietta E. Cathey, Andrew J. Berry, Eric C. Ferré, Daryl L. Howard
Publikováno v:
Communications Earth & Environment, Vol 3, Iss 1, Pp 1-11 (2022)
Pink and white raft pumice from the 2012 Havre deep-sea eruption experienced prolonged high-temperature atmospheric oxidation of magnetite to hematite which suggests a short but powerful explosive phase, according to microanalytical investigation.
Externí odkaz:
https://doaj.org/article/f083cb1c369b4ecfa3b4053b5ef77c2e
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
The 2012 Havre eruption evacuated a crystal-poor rhyolite (∼3–7% crystals) producing a volumetrically dominant (∼1.4 km3) pumice raft, as well as seafloor giant pumice (5–8%) and lavas (12–14%) at the vent (∼0.1 km3), both of which have s
Externí odkaz:
https://doaj.org/article/0fe48e976fc54d18b98d7b5695535dc2
Autor:
Joseph Knafelc, Scott E. Bryan, Michael W. M. Jones, Guilherme Mallmann, Jeremy Wykes, Daryl L. Howard
Publikováno v:
Journal of Synchrotron Radiation. 27:207-211
Determining the oxidation state of Fe through parameterization of X-ray absorption near-edge structure (XANES) spectral features is highly dependent on accurate and repeatable energy calibration between spectra. Small errors in energy calibration can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b96ab89095f867afc4eaa85433350e30
https://doi.org/10.1107/s1600577519014267
https://doi.org/10.1107/s1600577519014267
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
The 2012 Havre eruption evacuated a crystal-poor rhyolite (∼3–7% crystals) producing a volumetrically dominant (∼1.4 km3) pumice raft, as well as seafloor giant pumice (5–8%) and lavas (12–14%) at the vent (∼0.1 km3), both of which have s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75771630899e1bf8778bce89215371b3
https://www.frontiersin.org/article/10.3389/feart.2020.00310/full
https://www.frontiersin.org/article/10.3389/feart.2020.00310/full
Autor:
Jeremy Wykes, Scott E. Bryan, Guilherme Mallmann, Michael W. M. Jones, Daryl L. Howard, Joseph Knafelc
Publikováno v:
Journal of Synchrotron Radiation. 27:1092-1093
A correction is made to the paper by Jones et al. (2020). [J. Synchrotron Rad. (2020), 27, 207–211].
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a601484cb5d17d955c617d63d09cb9f1
https://doi.org/10.1107/s1600577520008164
https://doi.org/10.1107/s1600577520008164
Autor:
Susanne P. Schwenzer, S. A. Friedman, Eric C. Ferré, L. J. Costello, James A. Conder, Justin Filiberto, Daniel R. Hummer, J. R. Crandall, Joseph Knafelc, M. Darby Dyar
Although nucleation of magnetite and/or hematite along dislocations upon oxidation of olivine has been observed by many workers, the effect of oxidation on the magnetic properties of the sample with specific mineralogical alterations has not been stu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef9412fe4c21b2f33f4dfb1255c2dd4d
http://oro.open.ac.uk/61041/1/61041.pdf
http://oro.open.ac.uk/61041/1/61041.pdf
Autor:
Jones, Michael W. M.1 (AUTHOR) mw.jones@qut.edu.au, Mallmann, Guilherme2 (AUTHOR), Wykes, Jeremy L.3 (AUTHOR), Knafelc, Joseph4 (AUTHOR), Bryan, Scott E.4 (AUTHOR), Howard, Daryl L.3 (AUTHOR)
Publikováno v:
Journal of Synchrotron Radiation. Jan2020, Vol. 27 Issue 1, p207-211. 5p.
Autor:
KNAFELC, JOSEPH, CONDER, JAMES A., COSTELLO, LACEY, HUMMER, DANIEL R., FILIBERTO, JUSTIN, FERRV, ERIC C., CRANDALL, JAKE R., FRIEDMAN, SARAH A., DYAR, M. DARBY, SCHWENZER, SUSANNE P.
Publikováno v:
American Mineralogist; May2019, Vol. 104 Issue 5, p694-702, 9p