Zobrazeno 1 - 7
of 7
pro vyhledávání: '"J. T. Shafer"'
Autor:
Jörg Fritz, Vera A. Fernandes, Claire McLeod, J. T. Shafer, Thomas J. Lapen, Alan R. Butcher, Alan D. Brandon, Anthony J. Irving, Anne H. Peslier
Publikováno v:
Geochimica et Cosmochimica Acta. 187:350-374
Lunar granulitic meteorites provide new constraints on the composition and evolution of the lunar crust as they are potentially derived from outside the Apollo and Luna landing sites. Northwest Africa (NWA) 3163, the focus of this study, and its pair
Autor:
Anne H. Peslier, Anthony J. Irving, J. T. Shafer, Thomas J. Lapen, Hejiu Hui, Alan D. Brandon
Publikováno v:
Meteoritics & Planetary Science. 46:1313-1328
– Northwest Africa (NWA) 5298 is an evolved basaltic shergottite that has bulk characteristics and mineral compositions consistent with derivation from an oxidized reservoir in Mars. Chemically zoned clinopyroxene (64.5%, augite and pigeonite), wit
Publikováno v:
Geochimica et Cosmochimica Acta. 74:7307-7328
Combined 147Sm–143Nd and 176Lu–176Hf chronology of the martian meteorite Larkman Nunatak (LAR) 06319 indicates an igneous crystallization age of 193 ± 20 Ma (2σ weighted mean). The individual 147Sm–143Nd and 176Lu–176Hf internal isochron ag
Autor:
Christopher D. K. Herd, Erin L. Walton, Alan D. Brandon, Anne H. Peslier, J. T. Shafer, Thomas J. Lapen, D. Hnatyshin
Publikováno v:
Geochimica et Cosmochimica Acta. 74:4543-4576
The Larkman Nunatak (LAR) 06319 olivine-phyric shergottite is composed of zoned megacrysts of olivine (Fo 76–55 from core to rim), pyroxene (from core to rim En 70 Fs 25 Wo 5 , En 50 Fs 25 Wo 25 , and En 45 Fs 45 Wo 10 ), and Cr-rich spinel in a ma
Autor:
Alan D. Brandon, Vinciane Debaille, Anne H. Peslier, Brian L. Beard, J. T. Shafer, Thomas J. Lapen, M. Righter
Publikováno v:
Science. 328:347-351
Less Old Martian Meteorite The oldest Martian meteorite known, ALH84001, was thought to be a remnant of primordial martian crust formed during solidification of an early magma ocean. Using isotope data, Lapen et al. (p. 347 ) revised the crystallizat
Autor:
C. B. B. Wood, R. F. Allaire, F. P. Brackett, J. T. Shafer, Heinz H. Thiele, Harold A. Mayer, R. K. Schafer, J. W. Zuidema
Publikováno v:
Journal of the SMPTE. 76:1021-1024
Publikováno v:
Journal of the SMPTE. 76:992-994