| GRD02MQS0 |
Micritic Limestone
|
Grey micrite lense in finely-bedded granular limestone. Small hand sample. Not cut. Original label: Basal part of graded bed. Look for platform debris, Posidonia. Is this younger than Toarcian? Has reddish, nodular limestone near base of secton. No posideonia seen. Looks more or less Domaro. Stop 4/2. Sept. 4, 1981. |
Italy |
0 |
Camp Elliott |
| GRD02MRS0 |
Conglomerate
|
Limestone conglomerate. Micrite clasts with occasional large foraminifera in sparry matrix. Small hand sample. Not cut. Original label: Upper trit. resedimented limestone with abundant larger forams. Stop 3/9. Sept. 14, 1981. |
Italy |
0 |
Camp Elliott |
| GRD02MSS0 |
Banded Iron Formation
|
Stomatolites (Collenia undosa) in banded iron formation. Polished. Original label: Biwabik Iron formation. 2.0 b.y. old. Stromatolites. |
Minnesota |
0 |
Ritter 154, 2 E |
| GRD02MTS0 |
Oolitic Ironstone
|
Oolitic ironstone interlayered with quartz and iron. Original label: Same locality. Oolitic rock. This formation is lateral equivalent of Greenflint Chert. Samples from Tom Johnson. |
Minnesota |
1 |
Ritter 154, 17 O |
| GRD02MUS0 |
Banded Iron Formation
|
Banded iron formation of the Hamersley Group. Some layers of asbestiform quartz (Tigers Eye). Jaspilite. Very large uncut sample. |
Australia |
0 |
Ritter 154, 21 M |
| GRD02MVS0 |
Oncoidal Limestone
|
Chambliss Limestone Member, Cararra Formation. Large sample. Limey crust on one side of sample. Nice oncolite. |
California |
0 |
Ritter 154, 21 M |
| GRD02MWS0 |
Oncoidal Limestone
|
Chambliss Limestone Member, Cararra Formation. From the base of Chambliss limestone. Large sample. Beautiful oncolite. |
California |
0 |
Ritter 154, 18 R |
| GRD02MWS1 |
Oncoidal Limestone
|
Chambliss Limestone Member, Cararra Formation. From the base of Chambliss limestone. Large sample. Beautiful oncolite. |
California |
0 |
Ritter 154, 21 M |
| GRD02MXS0 |
Banded Iron Formation
|
Banded iron formation. Slightly wavey bands. Large sample. |
Michigan |
0 |
Ritter 154, 17 R |
| GRD02MXS1 |
Banded Iron Formation
|
Banded iron formation. Slightly wavey bands. Large sample. |
Michigan |
0 |
Ritter 154, 17 R |
| GRD02MYS0 |
Sedimentary Structures
|
Nice example of ventifact. Noonday dolomite. Large sample. |
California |
0 |
Ritter 154, 22 L |
| GRD02MZS0 |
Sedimentary Structures
|
Casts of halite cubes on bedding surface of red sandstone. |
Arizona |
0 |
Ritter 154, 22 L |
| GRD02N2S0 |
Mudstone
|
Small green sample. Originally labeled as quartz monzonite. Appears to be some sort of fractured mudstone with calcite veins |
California |
0 |
Ritter 154, 22 E |
| GRD02OOS0 |
Greywacke
|
Very small grey sample of fine- to medium-grained greywacke. Franciscan. |
California |
3 |
Camp Elliott |
| GRD02OPS0 |
Greywacke
|
Small grey sample of fine- to medium-grained greywacke. Franciscan. |
California |
0 |
Camp Elliott |
| GRD02PBS0 |
Chalk
|
Chalk with thin wispy lenses and layers of opal. Billets. Original label: Transition and opal CT. Monterey Formation. |
California |
2 |
Ritter 154, 18 L |
| GRD02PWS0 |
Breccia
|
Bedded breccia. Top bed is composed of small angular chert clasts. Middle bed is composed of sub-rounded chert and mudstone clasts in carbonate matrix. The bottom bed is composed of subangular chert clasts in a vuggy carbonate matrix. Fault breccia? |
California |
2 |
Ritter 154, 17 B |
| GRD02S1S0 |
Sedimentary
|
Only thin sections no hand sample found |
|
6 |
Ritter 154, 3 C |
| GRD02SHS0 |
Sandstone
|
Fine grained quartz arenite sandstone with hematite laminations. Weakly consolidated. |
Navajo |
0 |
Ritter 154, 17 D |
| GRD02SIS0 |
Quartz Sandstone
|
Wingate Sandstone. Fine grained quartz wacke with planar laminations. |
UT-313 road to Island in the Sky, Utah |
0 |
Ritter 154, 17 I |
| GRD02SKS0 |
Shell Limestone
|
Fossiliferous micrite, with bivalves and miliolids |
Mexico |
0 |
Ritter 154, 18 E |
| GRD02SLS0 |
Siltstone
|
In volcanic water laid tuffs below main basalt flow. |
California |
0 |
Ritter 154, 17 Q |
| GRD02SPS0 |
Mudstone
|
Piceance Creek Member, Green River Formation |
Colorado |
0 |
Ritter 154, 22 E |
| GRD02SQS0 |
Packstone
|
|
Nevada |
0 |
Ritter 154, 18 F |
| GRD02SRS0 |
Oolitic Limestone
|
Layered Oolitic Limestone |
|
0 |
Ritter 154, 18 B |
| GRD02STS0 |
Grainstone
|
Lower Cadiz Shale Member of Cararra formation. Mid Cambrian. |
California |
1 |
Ritter 154, 22 I |
| GRD02SUS0 |
Limestone
|
Birds eye Limestone |
|
0 |
Ritter 154, 18 D |
| GRD02SUS1 |
Limestone
|
Birds eye Limestone |
|
0 |
Ritter 154, 21 M |
| GRD02SUS2 |
Limestone
|
Birds eye Limestone |
|
0 |
Ritter 154, 21 M |
| GRD02SVS0 |
Limestone
|
Deseret Formation. Upper Mississippian |
Utah |
2 |
Camp Elliott |
