Dataset Identification:
Resource Abstract:
- description: The Alaska Geochemical Database Version 2.0 (AGDB2) contains new geochemical data compilations in which each
geologic material sample has one "best value" determination for each analyzed species, greatly improving speed and
efficiency of use. Like the Alaska Geochemical Database (AGDB) before it, the AGDB2 was created and designed to compile and
integrate geochemical data from Alaska in order to facilitate geologic mapping, petrologic studies, mineral resource assessments,
definition of geochemical baseline values and statistics, environmental impact assessments, and studies in medical geology.
This relational database, created from the Alaska Geochemical Database (AGDB) that was released in 2011, serves as a data
archive in support of present and future Alaskan geologic and geochemical projects, and contains data tables in several different
formats describing historical and new quantitative and qualitative geochemical analyses. The analytical results were determined
by 85 laboratory and field analytical methods on 264,095 rock, sediment, soil, mineral and heavy-mineral concentrate samples.
Most samples were collected by U.S. Geological Survey (USGS) personnel and analyzed in USGS laboratories or, under contracts,
in commercial analytical laboratories. These data represent analyses of samples collected as part of various USGS programs
and projects from 1962 through 2009. In addition, mineralogical data from 18,138 nonmagnetic heavy mineral concentrate samples
are included in this database. The AGDB2 includes historical geochemical data originally archived in the USGS Rock Analysis
Storage System (RASS) database, used from the mid-1960s through the late 1980s and the USGS PLUTO database used from the mid-1970s
through the mid-1990s. All of these data are currently maintained in the National Geochemical Database (NGDB). Retrievals
from the NGDB were used to generate most of the AGDB data set. These data were checked for accuracy regarding sample location,
sample media type, and analytical methods used. This arduous process of reviewing, verifying and, where necessary, editing
all USGS geochemical data resulted in a significantly improved Alaska geochemical dataset. USGS data that were not previously
in the NGDB because the data predate the earliest USGS geochemical databases, or were once excluded for programmatic reasons,
are included here in the AGDB2 and will be added to the NGDB. The AGDB2 data provided here are the most accurate and complete
to date, and should be useful for a wide variety of geochemical studies. The AGDB2 data provided in the linked database may
be updated or changed periodically.; abstract: The Alaska Geochemical Database Version 2.0 (AGDB2) contains new geochemical
data compilations in which each geologic material sample has one "best value" determination for each analyzed species,
greatly improving speed and efficiency of use. Like the Alaska Geochemical Database (AGDB) before it, the AGDB2 was created
and designed to compile and integrate geochemical data from Alaska in order to facilitate geologic mapping, petrologic studies,
mineral resource assessments, definition of geochemical baseline values and statistics, environmental impact assessments,
and studies in medical geology. This relational database, created from the Alaska Geochemical Database (AGDB) that was released
in 2011, serves as a data archive in support of present and future Alaskan geologic and geochemical projects, and contains
data tables in several different formats describing historical and new quantitative and qualitative geochemical analyses.
The analytical results were determined by 85 laboratory and field analytical methods on 264,095 rock, sediment, soil, mineral
and heavy-mineral concentrate samples. Most samples were collected by U.S. Geological Survey (USGS) personnel and analyzed
in USGS laboratories or, under contracts, in commercial analytical laboratories. These data represent analyses of samples
collected as part of various USGS programs and projects from 1962 through 2009. In addition, mineralogical data from 18,138
nonmagnetic heavy mineral concentrate samples are included in this database. The AGDB2 includes historical geochemical data
originally archived in the USGS Rock Analysis Storage System (RASS) database, used from the mid-1960s through the late 1980s
and the USGS PLUTO database used from the mid-1970s through the mid-1990s. All of these data are currently maintained in the
National Geochemical Database (NGDB). Retrievals from the NGDB were used to generate most of the AGDB data set. These data
were checked for accuracy regarding sample location, sample media type, and analytical methods used. This arduous process
of reviewing, verifying and, where necessary, editing all USGS geochemical data resulted in a significantly improved Alaska
geochemical dataset. USGS data that were not previously in the NGDB because the data predate the earliest USGS geochemical
databases, or were once excluded for programmatic reasons, are included here in the AGDB2 and will be added to the NGDB. The
AGDB2 data provided here are the most accurate and complete to date, and should be useful for a wide variety of geochemical
studies. The AGDB2 data provided in the linked database may be updated or changed periodically.
Citation
- Title Alaska Geochemical Database Version 2.0 (AGDB2) - Including "Best Value" Data Compilations for Geochemical Data
for Rock, Sediment, Soil, Mineral, and Concentrate Sample Media.
-
- creation Date
2018-05-21T12:47:43.015890
Resource language:
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Metadata data stamp:
2018-08-06T22:20:05Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T22:20:05Z
Metadata contact
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pointOfContact
- organisation Name
CINERGI Metadata catalog
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- Contact information
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- Address
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- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:a4d84082-ec4e-40a0-9e4a-0755d6ae8f3d
Metadata record format is ISO19139 XML (MD_Metadata)