| GRD00X9S0 |
Grainstone
|
Encrinal limestone. Coarse-grained with crinoid stems. Some stems pieces are pink, others are white. See also 110-C125. |
New York |
1 |
Ritter 154, 2 H |
| GRD00XAS0 |
Feldspathic Sandstone
|
arkose prominent, K-spar grains |
|
1 |
Ritter 154, 17 E |
| GRD00XAS1 |
Feldspathic Sandstone
|
arkose prominent, K-spar grains |
|
0 |
Ritter 154, 17 E |
| GRD00XBS0 |
Shell Limestone
|
Marble Falls Limestone. Cretaceous. Large shell fragments and bivalve shell impressions. High porosity. |
Texas |
1 |
Ritter 154, 18 E |
| GRD00XDS0 |
Micritic Limestone
|
No hand sample; Thin section is in Thin Section only case in RH 154. Burlington Fm., cherty limestone |
Missouri |
1 |
Ritter 154 |
| GRD00XES0 |
Dolostone
|
dolomite, Joachim Fm., Ordovician |
Missouri |
1 |
Ritter 154, 18 H |
| GRD00XFS0 |
Dolostone
|
dolomite, Joachim Fm., Ordovician; mottled |
Missouri |
1 |
Camp Elliott |
| GRD00XGS0 |
Dolostone
|
laminated dolomite, small sample |
California |
1 |
Ritter 154, 21 J |
| GRD00XHS0 |
Volcaniclastic Sediment
|
Original description: Rhyolite tuff? weathered, clay-rich, quartz, micas. |
California |
1 |
Ritter 154, 17 N |
| GRD00XIS0 |
Dolostone
|
laminated dolomite |
California |
1 |
Ritter 154, 18 H |
| GRD00XJS0 |
Replacement Features
|
dolomite with chert nodules |
California |
1 |
Ritter 154, 18 O |
| GRD00XKS0 |
Dolostone
|
dolomite, finely laminated, small hand sample at Camp Elliott; Thin section in Thin Section Only case in RH 154. |
California |
1 |
Camp Elliott |
| GRD00XLS0 |
Volcaniclastic Sediment
|
rhyolite tuff weathered, clay-rich |
California |
1 |
Ritter 154, 17 N |
| GRD00XMS0 |
Quartz Sandstone
|
No hand sample; Thin section is in Thin Section only case in RH 154. |
California |
1 |
Ritter 154 |
| GRD00XNS0 |
Nodules
|
Black chert nodules in grey silicified limestone |
California |
1 |
Ritter 154, 22 J |
| GRD00XOS0 |
Fe and Mn Formation
|
Fe-mineralized rock?hydrothermal alteration? No hand sample; Thin section is in Thin Section only case in RH 154. |
California |
1 |
Ritter 154 |
| GRD00XPS0 |
Conglomerate
|
pebble conglomerate with graded bedding. Thin sections only. No hand sample. Thin sections are in Thin Section only case in RH 154. |
California |
2 |
Ritter 154 |
| GRD00XQS0 |
Siltstone
|
No hand sample. Thin section is in Thin Section only case in RH 154. |
|
1 |
Ritter 154 |
| GRD00XRS0 |
Chert
|
Dark brown chert interbedded with cream chert layers. Some beds are more fine-grained than others. |
|
1 |
Camp Elliott |
| GRD00XSS0 |
Quartz Sandstone
|
No hand sample; Thin section is in Thin Section only case in RH 154. |
|
1 |
Ritter 154 |
| GRD00XTS0 |
Dolostone
|
Red dolomite. Bass Limestone. Algal laminations. |
Arizona |
1 |
Ritter 154, 17 P |
| GRD00XUS0 |
Oolitic Ironstone
|
Oolitic iron formation, Silurian Clinton Iron Fm., with brachiopods |
Alabama |
1 |
Ritter 154, 17 O |
| GRD00XVS0 |
Dolostone
|
Red dolomite, Precambrian; calcite veins |
California |
1 |
Ritter 154, 18 H |
| GRD00XWS0 |
Evaporite
|
evaporite deposits. No hand sample; Thin section is in Thin Section only case in RH 154. |
California |
1 |
Ritter 154 |
| GRD00XXS0 |
Anhydrite
|
evaporite deposits, chickenwire fabric. |
California |
1 |
Ritter 154, 17 M |
| GRD00XYS0 |
Evaporite
|
No hand sample; Thin section is in Thin Section only case in RH 154. |
Fish Creek Mtns., California |
1 |
Ritter 154 |
| GRD00XZS0 |
Lithic Sandstone
|
Split Mtn. Fm. Very small white hand sample at Camp Elliott; Thin section in Thin Section Only case in RH 154. |
California |
1 |
Camp Elliott |
| GRD00Y0S0 |
Volcaniclastic Sediment
|
No hand sample; Thin section is in Thin Section only case in RH 154. |
California |
1 |
Ritter 154 |
| GRD00Y1S0 |
Volcaniclastic Sediment
|
No hand sample; Thin section is in Thin Section only case in RH 154. |
California |
1 |
Ritter 154 |
| GRD00Y2S0 |
Limestone
|
limestone, metamorphosed from basal contact, diabase sill. Small hand sample at Camp Elliott. Thin section in Thin Section Only case in RH 154. |
Arizona |
1 |
Camp Elliott |
