Data from the Chemical Analysis of Archived Stream-Sediment Samples, Alaska

This data release contains the elemental concentration data for more than 1700 archived stream-sediment samples collected in Alaska. Samples were retrieved from the USGS Mineral Program's sample archive in Denver, CO, and the Alaska Division of Geological and Geophysical Surveys Geologic Materials Center in Anchorage, AK. All samples were analyzed using a multi-element analytical method involving fusion of the sample by sodium peroxide, dissolution of the fusion cake by nitric acid, and elemental analysis by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and inductively coupled plasma-mass spectroscopy (ICP-MS). Additionally, 106 samples from the Nixon Fork area were analyzed by a second multi-element method in which the samples are decomposed by a mixture of hydrochloric, nitric, perchloric, and hydrofluoric acids and the elemental composition is determined by ICP-OES and ICP-MS. New Hg (mercury) concentrations, determined by cold-vapor atomic absorption spectrometry, are reported for 296 samples from southeast Alaska.

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 20220725164314
identifier USGS:ASC382
metadata_type geospatial
modified 20210528
old-spatial {"type": "Polygon", "coordinates": [[[-161.2, 55.9], [-161.2, 67.3], [ -130.5, 67.3], [ -130.5, 55.9], [-161.2, 55.9]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 58f1bbde8939ef6f4b2bf0f287c6f55aefe286d7
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-161.2, 55.9], [-161.2, 67.3], [ -130.5, 67.3], [ -130.5, 55.9], [-161.2, 55.9]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alaska
  • amerigeo
  • amerigeoss
  • atomic-absorption-analysis
  • chemical-analysis
  • chemical-concentrations
  • chilkat-river
  • ckan
  • geo
  • geochemistry
  • geoscientificinformation
  • geoss
  • mass-spectroscopy
  • national
  • nixon-fork
  • north-america
  • stikine-river
  • taku-river
  • united-states
  • unuk-river
  • usgs-asc382
isopen False
license_id notspecified
license_title License not specified
maintainer Bronwen Wang
maintainer_email ascweb@usgs.gov
metadata_created 2025-11-22T22:30:56.946393
metadata_modified 2025-11-22T22:30:56.946397
notes This data release contains the elemental concentration data for more than 1700 archived stream-sediment samples collected in Alaska. Samples were retrieved from the USGS Mineral Program's sample archive in Denver, CO, and the Alaska Division of Geological and Geophysical Surveys Geologic Materials Center in Anchorage, AK. All samples were analyzed using a multi-element analytical method involving fusion of the sample by sodium peroxide, dissolution of the fusion cake by nitric acid, and elemental analysis by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and inductively coupled plasma-mass spectroscopy (ICP-MS). Additionally, 106 samples from the Nixon Fork area were analyzed by a second multi-element method in which the samples are decomposed by a mixture of hydrochloric, nitric, perchloric, and hydrofluoric acids and the elemental composition is determined by ICP-OES and ICP-MS. New Hg (mercury) concentrations, determined by cold-vapor atomic absorption spectrometry, are reported for 296 samples from southeast Alaska.
num_resources 2
num_tags 21
title Data from the Chemical Analysis of Archived Stream-Sediment Samples, Alaska