Lower Cretaceous Aptian
type: Dataset
description: The NSTA Regional Aquifer Presence Maps publication contains a series of geological maps, each representing a discrete stratigraphic play interval within the UK Continental Shelf. The feature classes aim to characterise the subsurface geological framework relevant to potential aquifer-based subsurface storage (including CO₂ storage, hydrogen storage, and compressed air energy storage). Each feature class includes attribute information describing: Gross Depositional Environment (GDE) – interpreted paleoenvironmental setting controlling sediment distribution. Depositional Facies – sedimentary facies classification. Lithology Group and Lithology – simplified lithological descriptors indicating dominant sediment composition. Chronostratigraphic Age – standardised age assignment for each interval. These datasets are built upon the regional geological interpretations produced during the UKCS Regional Geology Maps project undertaken by Lloyd’s Register and the OGA. This work integrated seismic interpretation, well data, field data, stratigraphic correlation, and regional geological understanding to generate consistent interval based geological maps across the basin. Potential Applications The maps are designed to function as an early-stage screening tool to guide: identification of intervals with favourable or unfavourable characteristics for subsurface storage; regional assessment of aquifer presence, continuity, and variability; prioritisation of areas where more detailed appraisal or data acquisition may be warranted; While not a substitute for detailed geological modelling or licence scale site characterisation, the maps provide a baseline understanding of the geological context and help focus effort where it is likely to provide the greatest value.
landing page: https://open-data-ukcs-transition.hub.arcgis.com/datasets/UKCS-transition::lower-cretaceous-aptian-2
issued: 2026-02-19T11:19:43+00:00
modified: 2026-02-19T12:29:49.952000+00:00
publisher: North Sea Transition Authority

ArcGIS Hub Dataset
type: Distribution
format: HTML
access URL: https://open-data-ukcs-transition.hub.arcgis.com/datasets/UKCS-transition::lower-cretaceous-aptian-2
issued: 2026-06-18T11:12:11.894002
modified: 2026-06-18T11:12:11.890659

ArcGIS GeoService
type: Distribution
format: ArcGIS GeoServices REST API
access URL: https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_regional_aquifers_geology_%28ED50%29/FeatureServer/12
issued: 2026-06-18T11:12:11.894004
modified: 2026-06-18T11:12:11.890734

CSV
type: Distribution
format: CSV
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/csv
issued: 2026-06-18T11:12:11.894005
modified: 2026-06-18T11:12:11.890783

Shapefile
type: Distribution
format: ZIP
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/shapefile
issued: 2026-06-18T11:12:11.894006
modified: 2026-06-18T11:12:11.890828

GeoJSON
type: Distribution
format: GeoJSON
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/geojson
issued: 2026-06-18T11:12:11.894006
modified: 2026-06-18T11:12:11.890871

KML
type: Distribution
format: KML
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/kml
issued: 2026-06-18T11:12:11.894007
modified: 2026-06-18T11:12:11.890914

File Geodatabase
type: Distribution
format: ZIP
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/filegdb
issued: 2026-06-18T11:12:11.894008
modified: 2026-06-18T11:12:11.890955

Feature Collection
type: Distribution
format: TXT
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/featureCollection
issued: 2026-06-18T11:12:11.894008
modified: 2026-06-18T11:12:11.890996

Excel
type: Distribution
format: XLSX
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/excel
issued: 2026-06-18T11:12:11.894009
modified: 2026-06-18T11:12:11.891037

GeoPackage
type: Distribution
format: GPKG
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/geoPackage
issued: 2026-06-18T11:12:11.894010
modified: 2026-06-18T11:12:11.891077

SQLite Geodatabase
type: Distribution
format: GDB
access URL: https://open-data-ukcs-transition.hub.arcgis.com/api/download/v1/items/ff896f5dbe1049cdbe288424ff1665dd/sqlite
issued: 2026-06-18T11:12:11.894011
modified: 2026-06-18T11:12:11.891117