| GRD00GTS0 |
Basalt
|
Amygdaloidal aphyric basalt. Presumably ~1.1 Ga Portage Lake volcanics. Thin section in Wards Micro Slides box in RH 154.. |
Michigan |
1 |
Camp Elliott |
| GRD00GUS0 |
Basalt
|
Wachtung Basalt. Thin section missing. |
New Jersey |
1 |
Camp Elliott |
| GRD00GYS0 |
Rhyolite
|
rhyolite porphyry (Ks>Pl, Hb, Q). Porphyritic rhyolite, with K-spar and phenocrysts |
|
0 |
Ritter 154, 15 G |
| GRD00H5S0 |
Basalt
|
Basalt? |
|
0 |
Camp Elliott |
| GRD00H7S0 |
Ankaramite
|
Ankaramite (Pyx-altered Ol) pebble |
|
0 |
Ritter 154, 16 J |
| GRD00HAS0 |
Basalt
|
Altered plag-phyric basalt |
|
0 |
Camp Elliott |
| GRD00HCS0 |
Basalt
|
Glassy pillow lava. Likely Pascua 03 dredge 8. |
Pacific Ocean |
0 |
Ritter 154, 16 H |
| GRD00HMS0 |
Obsidian
|
altered obsidian with Q |
|
0 |
Camp Elliott |
| GRD00HSS0 |
Basalt
|
sparsely Ol-phyric basalt. Original label: Bi-trachyte? |
S. Baker |
0 |
Camp Elliott |
| GRD00HXS0 |
Trachyte
|
altered porphyritic trachyte (Kspar, Plag phenocrysts) |
California |
0 |
Ritter 154, 15 H |
| GRD00HYS0 |
Basalt
|
vesicular basalt |
California |
0 |
Camp Elliott |
| GRD00I0S0 |
Rhyolite
|
rhyolite porphyry (euhedral Q-Ks) |
|
0 |
Ritter 154, 15 G |
| GRD00I1S0 |
Basalt
|
Porphrytic (Px, sparse Ol) basalt. Probably part of the 64 Ma Valmont dike. |
Colorado |
1 |
Ritter 154, 16 H |
| GRD00I8S0 |
Basalt
|
vesicular basalt ~aphyric |
|
0 |
Camp Elliott |
| GRD00IES0 |
Basalt
|
basalt (very sparse Px) |
|
0 |
Camp Elliott |
| GRD00IFS0 |
Obsidian
|
obsidian with pumaceous layer +Q? |
|
0 |
Camp Elliott |
| GRD00IJS0 |
Rhyolite
|
rhyolite cobbles (Q-Ksp) |
|
0 |
Camp Elliott |
| GRD00ILS0 |
Dacite
|
Dacite (Hb-Q), nice euhedral amphibole, multiple pieces (13 in total) |
|
0 |
Ritter 154, 15 Q |
| GRD00INS0 |
Obsidian
|
obsidian (half dozen small pieces) |
|
0 |
Camp Elliott |
| GRD00IPS0 |
Basalt
|
Px-Ol basalt |
Hawaii |
0 |
Ritter 154, 16 R |
| GRD00IQS0 |
Basalt
|
vesicular, sparsely Plag, Ol phyric basalt; 1960 flow |
Hawaii |
0 |
Ritter 154, 16 R |
| GRD00IRS0 |
Basalt
|
picritic basalt |
Hawaii |
0 |
Ritter 154, 16 H |
| GRD00ISS0 |
Basalt
|
vesicular, porphyritic Ol-basalt; 1840 flow |
Hawaii |
0 |
Ritter 154, 16 H |
| GRD00J0S0 |
Basalt
|
vesicular, aphyric basalt |
California |
0 |
Ritter 154, 20 M |
| GRD00JHS0 |
Basalt
|
Glassy, aphyric basalt. Cut sample but likely part of sheet flow. |
Pacific Ocean |
0 |
Ritter 154, 16 H |
| GRD00JIS0 |
Andesite
|
altered, Plag-phyric andesite |
Cascades |
0 |
Ritter 154, 16 B |
| GRD00JNS0 |
Basalt
|
Glassy, aphyric basalt. Cut sample but likely part of sheet flow. |
Pacific Ocean |
1 |
Ritter 154, 16 H |
| GRD0170S0 |
Felsic Extrusive
|
Ash bed dated to approximately 8.6 ma by U.S.G.S. Fission track. |
California |
0 |
|
| GRD018VS0 |
Basalt
|
grey green altered vesicular basalt (described in notebook as first hard limestone above basalt but thin section shows it is a basalt) |
Italy |
1 |
Camp Elliott |
| GRD01EVS0 |
Felsic Extrusive
|
Possible tuffaceous layer in cherty limestone. |
Italy |
0 |
Camp Elliott |
