Enum: SubsurfaceFormationType
Classification of subsurface geological formations relevant to energy exploration, carbon storage, geothermal systems, and groundwater resources.
URI: valuesets:SubsurfaceFormationType
Permissible Values
| Value | Meaning | Description | Broad Mappings |
|---|---|---|---|
| AQUIFER | ENVO:00012408 | An underground layer of water-bearing permeable rock or unconsolidated materials from which groundwater can be extracted | |
| AQUITARD | A zone within the earth that restricts the flow of groundwater from one aquifer to another | ||
| RESERVOIR_ROCK | A porous and permeable rock formation capable of storing and transmitting fluids such as oil, gas, or water | ||
| CAPROCK | An impermeable rock layer overlying a reservoir that prevents upward migration of fluids | ||
| FAULT_ZONE | A zone of fracturing and deformation along a geological fault | ENVO:01000668 | |
| KARST | ENVO:00000175 | A landscape formed from dissolution of soluble rocks such as limestone, dolomite, and gypsum, characterized by sinkholes, caves, and underground drainage | |
| PERMAFROST | ENVO:00000134 | Soil or rock that remains at or below freezing for two or more consecutive years | |
| UNCONSOLIDATED_SEDIMENT | Loose, uncemented sedimentary material such as gravel, sand, silt, or clay | ||
| FRACTURED_BEDROCK | Bedrock containing natural fractures that may serve as pathways for fluid flow | ||
| COAL_SEAM | A stratum of coal within a sedimentary rock sequence | ENVO:02000091 | |
| SALT_DOME | ENVO:01000505 | A dome-shaped intrusion of evaporite minerals formed by upward movement of a salt body through overlying rock | |
| SHALE | ENVO:00002056 | A fine-grained sedimentary rock formed from compacted clay or mud, often serving as a seal or source rock |
Slots
| Name | Description |
|---|---|
| subsurface_formation_type | Classification of subsurface geological formation |
Identifier and Mapping Information
Schema Source
- from schema: https://w3id.org/valuesets
LinkML Source
name: SubsurfaceFormationType
instantiates:
- valuesets_meta:ValueSetEnumDefinition
description: Classification of subsurface geological formations relevant to energy
exploration, carbon storage, geothermal systems, and groundwater resources.
title: Subsurface Formation Type
from_schema: https://w3id.org/valuesets
contributors:
- orcid:0000-0002-6601-2165
- https://github.com/anthropics/claude-code
status: DRAFT
rank: 1000
permissible_values:
AQUIFER:
text: AQUIFER
description: An underground layer of water-bearing permeable rock or unconsolidated
materials from which groundwater can be extracted
meaning: ENVO:00012408
AQUITARD:
text: AQUITARD
description: A zone within the earth that restricts the flow of groundwater from
one aquifer to another
RESERVOIR_ROCK:
text: RESERVOIR_ROCK
description: A porous and permeable rock formation capable of storing and transmitting
fluids such as oil, gas, or water
CAPROCK:
text: CAPROCK
description: An impermeable rock layer overlying a reservoir that prevents upward
migration of fluids
FAULT_ZONE:
text: FAULT_ZONE
description: A zone of fracturing and deformation along a geological fault
broad_mappings:
- ENVO:01000668
KARST:
text: KARST
description: A landscape formed from dissolution of soluble rocks such as limestone,
dolomite, and gypsum, characterized by sinkholes, caves, and underground drainage
meaning: ENVO:00000175
PERMAFROST:
text: PERMAFROST
description: Soil or rock that remains at or below freezing for two or more consecutive
years
meaning: ENVO:00000134
UNCONSOLIDATED_SEDIMENT:
text: UNCONSOLIDATED_SEDIMENT
description: Loose, uncemented sedimentary material such as gravel, sand, silt,
or clay
FRACTURED_BEDROCK:
text: FRACTURED_BEDROCK
description: Bedrock containing natural fractures that may serve as pathways for
fluid flow
COAL_SEAM:
text: COAL_SEAM
description: A stratum of coal within a sedimentary rock sequence
broad_mappings:
- ENVO:02000091
SALT_DOME:
text: SALT_DOME
description: A dome-shaped intrusion of evaporite minerals formed by upward movement
of a salt body through overlying rock
meaning: ENVO:01000505
SHALE:
text: SHALE
description: A fine-grained sedimentary rock formed from compacted clay or mud,
often serving as a seal or source rock
meaning: ENVO:00002056