![]() Data
on Holocene Tephra (Volcanic Ash) Deposits in the Alaska Peninsula and
Lower Cook Inlet Region of the Aleutian Volcanic Arc, Alaska
ByJ.R. Riehle1,
C.E. Meyer2, and R.T. Miyaoka1
Open-File Report
99-135
1999 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. U.S. DEPARTMENT
OF THE INTERIOR
1U.S.
Geological Survey, 4200 University Drive, Anchorage Alaska 99508;
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How to Use this Site -- Sample localities are shown on an index map of the Alaska Peninsula and lower Cook Inlet, eastern Aleutian volcanic arc, Alaska. Each locality is linked to its own page, on which are shown a stratigraphic column for the site, the sampled deposits, and analytical results. Volcanoes that have been active during the past 10,000 years and other geographic features are also shown on the index map.
A methods description, tabulated analytical and location data, and a list of samples with known source vents are also included as part of this site.
The rest of the project can be found following the links which are below and on each second-level page:
Index Map: links to stratigraphic columns and data for individual sites
Methods: history and goals of the project, and analytical proceedures
Data:tabulated
chemical data in the following formats:
browser readable
normalized
to 100% anhydrous
unnormalized,
with std. deviations of multiple analyses and mineralogical data
MS Excel v5.0/95 spreadsheet
normalized
to 100% anhydrous
unnormalized,
with std. deviations of multiple analyses and mineralogical data
PDF
file (requires Adobe Acrobat Reader)
Sample Localities: location and brief description of each field site
Sample
Sources: list of samples whose source vent is
know with reasonable certainty