GRD02ODS0 |
Welded Ignimbrite
|
Bishop Tuff. Dark brown fiamme mantled by black rims with rounded quartz crystals in pink groundmass. Hypocrystalline. |
California |
5 |
Ritter 154, 3 F |
GRD02P9S0 |
Scoria
|
Scoria with green and white xenoliths. Billets. Original label: Melted rock. Monterey Formation. 1988 Fall Field Trip. |
California |
2 |
Ritter 154, 15 J |
GRD02PVS0 |
Ignimbrite
|
Four billets of Bishop Tuff. The groundmass is pink whereas the fiamme are purple. Quartz crystals are visible. Original label: Bishop Tuff. |
California |
4 |
Ritter 154, 3 E |
GRD02PVS1 |
Ignimbrite
|
The groundmass is pink whereas the fiamme are purple. Quartz crystals are visible. Original label: Bishop Tuff. |
California |
4 |
Ritter 154, 3 E |
GRD02PVS2 |
Ignimbrite
|
The groundmass is pink whereas the fiamme are purple. Quartz crystals are visible. Original label: Bishop Tuff. |
California |
4 |
Ritter 154, 15 K |
GRD02QLS0 |
Ignimbrite
|
Collected 1955. Lithic fragments, pumice, quartz and feldspar phenocryst |
California |
1 |
Ritter 154, 15 K |
GRD02SNS0 |
Ignimbrite
|
Volcanic Tuff. Miocene at 2100 ft in Hueneme Well. |
California |
1 |
Ritter 154, 17 N |
GRD02UQS0 |
Pyroclastic Deposits
|
Fresh Clinopyroxene amidst altered mineral assemblage. Tuff Breccia. Lower Jurassic |
California |
1 |
Ritter 154, 17 N |
GRD02VDS0 |
Ignimbrite
|
Bishop Tuff - lithic xxl - poorly indurated |
California |
0 |
Ritter 154, 19 I |
GRD02VES0 |
Ignimbrite
|
Pinkish/white Bishop Tuff - lithic crystal - poorly indurated |
California |
0 |
Ritter 154, 15 K |
GRD02VES1 |
Ignimbrite
|
Pinkish/white Bishop Tuff - lithic crystal - poorly indurated |
California |
0 |
Ritter 154, 19 I |
GRD03YQS0 |
Pyroclastic Deposits
|
Middle Tuff. Middle part of tuff is chiefly analcime with minor K-feldspar. |
California |
0 |
Ritter 154, 19 I |
GRD03YRS0 |
Pyroclastic Deposits
|
Tuff consists mainly of irregular remnants of white K-spar (clinoptilolite) surrounded by analcime. Local hard chalcedony at top of tuff. |
California |
0 |
Ritter 154, 15 K |
GRD03YSS0 |
Pyroclastic Deposits
|
Yellow Tuff. About 140 feet below skyline tuff. Yellow tuff ; mainly spherulitic phillipsite and analcime. |
California |
0 |
Ritter 154, 15 K |
GRD03YTS0 |
Pyroclastic Deposits
|
Skyline Tuff. Tuff is chiefly altered to clinoptilolite with minor analcime in lower part, and upper part. |
California |
0 |
Ritter 154, 15 K |
GRD03YUS0 |
Pyroclastic Deposits
|
Tuff C, completely altered to k-feldspar and other mineral. About 95 feet below Tuff A. |
California |
0 |
Ritter 154, 15 K |
GRD03YVS0 |
Pyroclastic Deposits
|
Tuff A localy altered at the top and base to greenish-yellow phillipsite |
California |
0 |
Ritter 154, 19 I |
GRD03YXS0 |
Pyroclastic Deposits
|
Tuff A, completely altered to zeolites with minor searlesite. Basal orange part consists of spherulitic phillipsite. Upper white part consists chiefly of crionite. Volcanic textures still obvious |
California |
0 |
Ritter 154, 19 I |
GRD03YZS0 |
Pumice
|
Collected 1975 |
Oregon |
0 |
Ritter 154, 15 J |
GRD03ZCS0 |
Pyroclastic Deposits
|
Stratified pyroclastic rock with alternating dark and light layers |
California |
0 |
Ritter 154, 15 J |
GRD03ZGS0 |
Pyroclastic Deposits
|
Pyroclastic breccia, red matrix with lithic volcanic fragments |
Greece |
0 |
Ritter 154, 17 N |
GRD041KS0 |
Welded Ignimbrite
|
Sanidine bearing welded tuff |
Texas |
1 |
Ritter 154, 15 L |
GRD041MS0 |
Pyroclastic Deposits
|
Obispo Tuff |
California |
2 |
Ritter 154, 15 K |
GRD041NS0 |
Pyroclastic Deposits
|
Palagonitic tuff |
Washington |
1 |
Ritter 154, 15 J |
GRD043MS0 |
Welded Ignimbrite
|
Bishop Tuff. porphyritic, welded with quartz, plagioclase, and k-spar phenocrysts |
California |
2 |
Ritter 154, 15 L |
GRD043SS0 |
Ignimbrite
|
banded syenite ignimbrite, some spherulites and rolled phenocrysts; part of older material intruded by White Mtn Complex |
New Hampshire |
0 |
Ritter 154, 29 E |
GRD043SS1 |
Ignimbrite
|
banded syenite ignimbrite, some spherulites and rolled phenocrysts; part of older material intruded by White Mtn Complex |
New Hampshire |
0 |
Ritter 154, 29 E |
GRD0489S0 |
Ash
|
|
Philippines |
0 |
Camp Elliott |