Browsing by Author "MacPherson G.J."
- DSpace Home
- →
- Browsing by Author
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing by Author "MacPherson G.J."
Now showing items 1-8 of 8
-
Russell S.S.; MacPherson G.J.; Leshin L.A.; McKeegan K.D. (2000)The oxygen isotopic compositions of seven Al-rich chondrules from four unequilibrated ordinary chondrites were measured in situ using an ion microprobe. On an oxygen three isotope plot, the data are continuous with the ...
-
Huss G.R.; MacPherson G.J.; Wasserburg G.J.; Russell S.S.; Srinivasan G. (2001)In order to investigate the distribution of 26A1 in chondrites, we measured aluminum-magnesium systematics in four calcium-aluminum-rich inclusions (CAIs) and eleven aluminum-rich chondrules from unequilibrated ordinary ...
-
MacPherson G.J.; Huss G.R.; Davis A.M. (2003)We have found clear evidence of live 10Be in five normal Type A Calcium-aluminum-rich inclusions (CAIs), one normal Type B CAI, and one FUN Type A CAI, all from CV3 chondrites. The (10Be/9Be)0 ratios range from ∼0.36 × ...
-
Krot A.N.; MacPherson G.J.; Ulyanov A.A.; Petaev M.I. (2004)Fine-grained, spinel-rich inclusions in the reduced CV chondrites Efremovka and Leoville consist of spinel, melilite, anorthite, Al-diopside, and minor hibonite and perovskite; forsterite is very rare. Several CAIs are ...
-
Guan Y.; McKeegan K.D.; MacPherson G.J. (2000)Calcium-aluminum-rich inclusions (CAIs) from enstatite chondrites have large 16O excesses, similar to CAIs in carbonaceous and ordinary chondrites, and are also similar in morphology, mineralogy and Al-Mg isotopic systematics. ...
-
MacPherson G.J.; Huss G.R. (2005)We measured major, minor, and trace-element compositions for eleven Al-rich chondrules from unequilibrated ordinary chondrites to investigate the relationships between Al-rich chondrules, ferromagnesian chondrules, Ca-, ...
-
Becker H.; Morgan J.W.; Walker R.J.; MacPherson G.J.; Grossman J.N. (2001)The Re-Os isotopic systematics of calcium-aluminium-rich inclusions (CAIs) in chondrites were investigated in order to shed light on the behavior of the Re-Os system in bulk chondrites, and to constrain the timing of ...
-
Ivanov A.V.; Migdisova L.F.; Zolensky M.E.; MacPherson G.J.; Kononkova N.N. (1997)A petrological and mineralogical description of fragment 01.3.06 of the polymict meteorite breccia Kaidun is presented. The fragment is classified with EH3-4. This is the third type of enstatite chondrite that was found ...
Now showing items 1-8 of 8