Alamagan Volcano - geochronologic points

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
datagov_dedupe_retained 20220722114234
identifier USGS:5f3193de82ceae4cb3cae967
metadata_type geospatial
modified 20200831
old-spatial {"type": "Polygon", "coordinates": [[[145.821810, 17.583864], [145.821810, 17.612819], [ 145.825547, 17.612819], [ 145.825547, 17.583864], [145.821810, 17.583864]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 53084d6177ae35b09b7e4878846c2884acb3e000
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[145.821810, 17.583864], [145.821810, 17.612819], [ 145.825547, 17.612819], [ 145.825547, 17.583864], [145.821810, 17.583864]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alamagan-island
  • amerigeo
  • amerigeoss
  • andesite
  • ckan
  • geo
  • geochronologic-point
  • geochronpoints
  • geologic-maps
  • geoss
  • holocene
  • intermediate-volcanic-rock
  • lava-flow
  • national
  • north-america
  • northern-islands
  • northern-mariana-islands
  • pacific
  • pacific-islands
  • pleistocene
  • pyroclastic-rock
  • quaternary
  • radiocarbon
  • radiocarbon-point
  • radiocarbon-sample
  • united-states
  • usgs-5f3193de82ceae4cb3cae967
  • volcanic-activity
  • volcanic-rock
isopen False
license_id notspecified
license_title License not specified
maintainer Michael Zoeller
maintainer_email mzoeller@usgs.gov
metadata_created 2025-11-20T10:57:01.718498
metadata_modified 2025-11-20T10:57:01.718502
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 29
title Alamagan Volcano - geochronologic points