A geological and geophysical setting of the gold-silver vein system of Unga Island, southwestern Alaska
By: edited by James R. Riehle.
Contributors: Riehle, J. R.; Geological Survey (U.S.)
Edition: Version 1.3.
Series: Open-file report ;; 99-136; U.S. Geological Survey open-file report ;; 99-136.
Publisher: U.S. Geological Survey; USGS Information Services (Open-File Report Sales)
Published: 1999
Place of publication: Menlo Park, CA; [Denver, CO
Language: eng
Format: Electronic resource
Subjects: Gold ores -- Geology -- Alaska -- Unga Island.; Silver ores -- Geology -- Alaska -- Unga Island.; Geology -- Alaska -- Unga Island -- Maps.; Magnetic prospecting -- Alaska -- Unga Island.
Genres: Maps.
Other titles: Geological and geophysical study of the gold-silver vein system of Unga Island, southwestern Alaska; Gold-silver vein systems, Unga Island, southwestern Alaska
Description: Core of publication is new geologic map at scale of 1:63,360 and aeromagnetic and electromagnetic survey data acquired by industry over area of mineralization. Goal is deciphering the relations among volcanism, tectonism, and mineralization.
Notes: Title from title screen.
Shipping list no.: 2000-0010-E.
Version history: 1.0, online, June 12, 1999. Version 1.1 -- 1.3, June 21 -- Sept. 1999, added online enhancements. CD added Sept. 1999.
Also available via Internet from the USGS Web site. Address as of 2/24/2000: http://wrgis.wr.usgs.gov/open-file/of99-136; current access is available via PURL.
System requirements, Windows: 80386 or higher processor (Pentium recommended); Microsoft Windows 3.1 or higher (Windows 95, 98 or NT recommended); 8 mb RAM (64 MB recommended); VGA color monitor with 256 colors (16.7 million colors recommended); Adobe Acrobat Reader 3.0 or higher (included on disc) or other software that can translate PDF files; CD-ROM drive.