Data from the Chemical Analysis of Archived Stream-Sediment Samples, Alaska
type: Dataset
description: 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.
issued: 2025-11-22T22:30:56.946393
modified: 20210528
spatial: Location
contact point: Organization
  fn: Bronwen Wang
keyword: alaska
keyword: amerigeo
keyword: amerigeoss
keyword: atomic-absorption-analysis
keyword: chemical-analysis
keyword: chemical-concentrations
keyword: chilkat-river
keyword: ckan
keyword: geo
keyword: geochemistry
keyword: geoscientificinformation
keyword: geoss
keyword: mass-spectroscopy
keyword: national
keyword: nixon-fork
keyword: north-america
keyword: stikine-river
keyword: taku-river
keyword: united-states
keyword: unuk-river
keyword: usgs-asc382
theme: {geospatial}

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-07-07T14:43:35.948222
modified: 2025-11-22T22:30:56.933568
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.ASC382.xml
media type: text/xml

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-07-07T14:43:35.948236
modified: 2025-11-22T22:30:56.934016
access URL: https://doi.org/10.5066/P9FR1D6Y
media type: application/http

US Migrating
type: Agent