Soil Unit (0)
Soil Relative Agriculture Value (1)
| ≤0 |
| ≤38 |
| ≤42 |
| ≤65 |
| ≤70 |
| ≤93 |
| ≤100 |
Soil Prime or Important Farm (2)
| Prime farmland |
| Statewide Important |
Soil Restrictive Type (3)
| Bedrock |
| Densic |
Soil Problem Sands (4)
Soil Hydric (5)
| Hydric (all components are hydric) |
| Predominately hydric (66 to 99% components are hydric) |
| Predominately nonhydric (1 to 32% of components are hydric) |
| Unknown Hydric (On-site needed) |
Soil HydGrp + Water Table + Constraints (6)
| A, > 6 ft. |
| A, 1.5 - 1.6 ft. |
| B, > 6 ft. |
| B, 1.5 - 2.0 ft. |
| B, > 6 ft., Bedrock |
| C, 1.4 ft; C, 1.4 - 1.9 ft. |
| D, 1.5 ft. |
| D, 0 ft., HYDRIC |
| NR, > 6 ft., Bedrock |
| Variable |
| Water |
Soil Hydrologic Group (7)
Soil Excessively Permeable (8)
RI Surficial Geology (9)
| |
| BEDROCK |
| MIXED |
| OUTWASH |
| SAND/TILL |
| TILL |
| WATER |
| UNKNOWN |
RI Bedrock Geology (10)
| Absalona Formation |
| Dedham Granite |
| Dighton Conglomerate |
| Dutch Island Harbor Formation |
| East Passage Formation |
| FRESH WATER |
| Fort Adams Formation |
| Hoppin Formation |
| Jamestown Formation |
| Jamestown Formation + Fort Burnside Formation |
| Mamacoke Formation |
| NO BEDROCK UNIT EXPOSED |
| Newport Neck Formation |
| Nipsachuck Formation |
| Pirate Cove Formation + Jamestown Formation |
| Plainfield Formation |
| Pondville Conglomerate |
| Price Neck Formation |
| Purgatory Conglomerate |
| Raritan Formation |
| Rhode Island formation |
| Rope Ferry Gneiss |
| SALT WATER |
| Sacheust Arkose |
| Wamsutta Formation |
| Woonasquatucket Formation |
| alaskite gneiss |
| alkali-feldspar granite |
| alkali-feldspar granite of Cumberland |
| augen granite gneiss |
| cumberlandite |
| diabase |
| diorite/gabbro |
| epidote and biotite schist |
| felsic volcaniclastic rocks |
| fine-grained granite |
| gabbro/diorite |
| granite |
| granite gneiss |
| granodiorite |
| greenstone, amphibolite, serpentinite |
| leucocratic granite |
| mafic/intermediate gneiss |
| mafic/intermediate rock |
| metaclastic rock, undivided |
| mica schist |
| minette dike rocks |
| monchiquite |
| monzonite/monzodiorite |
| porphyritic granite |
| quartzite |
| rhyolite |
| undifferentiated rock |
| vein quartz |
| volcaniclastic rocks |
|
