Digital database of the geologic map of Alamagan Volcano, northern Mariana Islands

Alamagan Volcano is a Quaternary stratovolcano along the Mariana Arc, an active subduction zone in the western Pacific Ocean. Although primarily submerged, its peak reaches above sea level, with subaerially-exposed volcanic deposits dating back through the Holocene to the late Pleistocene. These feature data represent such deposits and other geologic features of Alamagan Volcano, describing its interpreted eruptive history.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5efbb7a782ced62aaaf05e0b
metadata_type geospatial
modified 20200831
old-spatial 145.782466, 17.556207, 145.885067, 17.636226
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 3c82531782c42ab156d51d90625bc0864f64614f
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[145.782466, 17.556207], [145.782466, 17.636226], [ 145.885067, 17.636226], [ 145.885067, 17.556207], [145.782466, 17.556207]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alamagan-island
  • amerigeo
  • amerigeoss
  • andesite
  • ckan
  • geo
  • geologic-maps
  • geoss
  • holocene
  • intermediate-volcanic-rock
  • lava-flow
  • national
  • nmialamagan
  • north-america
  • northern-islands
  • northern-mariana-islands
  • pacific
  • pacific-islands
  • pleistocene
  • pyroclastic-rock
  • quaternary
  • united-states
  • usgs-5efbb7a782ced62aaaf05e0b
  • volcanic-activity
  • volcanic-rock
isopen False
license_id notspecified
license_title License not specified
maintainer Michael Zoeller
maintainer_email mzoeller@usgs.gov
metadata_created 2025-11-22T23:57:28.443896
metadata_modified 2025-11-22T23:57:28.443901
notes Alamagan Volcano is a Quaternary stratovolcano along the Mariana Arc, an active subduction zone in the western Pacific Ocean. Although primarily submerged, its peak reaches above sea level, with subaerially-exposed volcanic deposits dating back through the Holocene to the late Pleistocene. These feature data represent such deposits and other geologic features of Alamagan Volcano, describing its interpreted eruptive history.
num_resources 2
num_tags 25
title Digital database of the geologic map of Alamagan Volcano, northern Mariana Islands