Appendix B.  Tmr_siw  Mineral compositions from electron microprobe analyses

Unit	Mineral	Chemical composition
1Tmrsiw	oligoclase	Ab72An22Or6
1Tmrsiw	oligoclase	Ab73An20Or7
1Tmrsiw	oligoclase	Ab73An21Or6
2Tmrsiw	oligoclase	Ab71An24Or5
2Tmrsiw	oligoclase	Ab72An22Or6
2Tmrsiw	oligoclase	Ab70An25Or5
3Tmrsiw	oligoclase	Ab73An21Or6
3Tmrsiw	oligoclase	Ab71An24Or5
3Tmrsiw	oligoclase	Ab73An21Or6
4Tmrsiw	andesine	Ab68An27Or5
4Tmrsiw	andesine	Ab68An27Or5
4Tmrsiw	anorthoclase	Ab63An6Or31
4Tmrsiw	anorthoclase	Ab70An11Or19
4Tmrsiw	andesine	Ab57An41Or2
4Tmrsiw	oligoclase	Ab70An25Or5
4Tmrsiw	ferroaugite	(Na0.02Ca0.83Fe2+0.87Mg0.25Fe3+0.01Ti0.01)(Al0.04Si1.98)O6]
4Tmrsiw	ferroaugite	(Na0.02Ca0.81Fe2+0.73Mg0.41Fe3+0.01Ti0.01)(Al0.03Si1.98)O6]
4Tmrsiw	ferroaugite	(Na0.02Ca0.80Fe2+0.74Mg0.40Fe3+0.01Ti0.01)(Al0.03Si1.99)O6]
4Tmrsiw	clinopyroxene	pigeonite
4Tmrsiw	hematite	(Mn0.03Fe2+0.12Mg0.02Fe3+1.66Ti0.17)O3

 Superscripts before unit names (e.g., ²Tmrsiw) indicate different rock samples of same lithologic unit; superscript ^x indicates xenolith within rock sample.