USGS Open-File Report 99-158

Long Valley Coring Project, Inyo County, California, 1998-

Preliminary Stratigraphy and Images of Recovered Core

Penelope C. Sackett¹, Vicki S. McConnell², Angela L. Roach³, Susan S. Priest¹, and John H. Sass¹

U.S. Geological Survey Open-File Report OF 99-158

1999

U.S. DEPARTMENT OF THE INTERIOR
BRUCE BABBITT, Secretary

U.S. GEOLOGICAL SURVEY
Charles G. Groat, Director

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey (USGS) 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.

¹U.S. Geological Survey, 2255 North Gemini Drive, Flagstaff, AZ 86001-1698
²Oregon Department of Geology and Mineral Industries, 1831 First Street, Baker City, OR 97184-3442
³Hawaii Institute of Geophysics and Planetology, 2525 Correa Road, Honolulu, HI 96822-2219

Rig from above

The Long Valley Exploratory Well as viewed from the south. Set among Jeffrey pines, this image shows the placement of LVEW on the resurgent dome within the Long Valley Caldera. This Photo was taken July 23, 1998 during Phase III of the Long Valley Coring Project. U.S. Geological Survey photograph by Penelope C. Sackett.

Abstract

Phase III of the Long Valley Exploratory Well, the Long Valley Coring Project, obtained continuous core between the depths of 7,180 and 9,831 ft (2,188 to 2,996 meters) during the summer of 1998. This report contains a compendium of information designed to facilitate post-drilling research focussed on the study of the core. Included are a preliminary stratigraphic column compiled primarily from field observations and a general description of well lithology for the Phase III drilling interval. Also included are high-resolution digital photographs of every core box (10 feet per box) as well as scanned images of pieces of recovered core. The user can easily move from the stratigraphic column to corresponding core box photographs for any depth. From there, compressed, "unrolled" images of the individual core pieces (core scans) can be accessed. Those interested in higher-resolution core scans can go to archive CD-ROMs stored at a number of locations specified herein. All core is stored at the USGS Core Research Center in Denver, Colorado where it is available to researchers following the protocol described in this report. Preliminary examination of core provided by this report and the archive CD-ROMs should assist researchers in narrowing their choices when requesting core splits.

Sample box photo

Sample box photo (reduced in size)

Sample core scan

Sample core scan (reduced in size)

View the report as a PDF

The report is provided as a PDF file for which you will need Adobe Acrobat Reader to view. You can download a copy of the latest version (4.0 at the time of this publication) by clicking the button above.

To view the PDF file (OF99_158.PDF), CLICK HERE (48 MB).

This PDF is 378 pages long, 358 of which are box photos. The PDF should load page at a time; if it does not, try a different browser. Navigation through the PDF file should begin with the stratigraphic column. The column is shown on 6 pages with 440 feet on each page. On the left side of the column are the depth intervals and on the right are a series of box numbers and brackets which designate the section of core contained in each box. To view a core scan, use the hand tool to choose from the series of core scans listed underneath the box photo which are also highlighted blue. Clicking on a core scan number will launch a viewer application that will allow you to view the JPG image. This report contains about 3,000 core-scan JPG images.

To view the Readme file from the CD-ROM publication (1_README.TXT), CLICK HERE.

ISBN: 0-607-92342-3

This report is available both on the World-Wide Web at this site and as a CD-ROM publication. A total of 561 MB of data is provided in both versions. The CD-ROM can be purchased for $32 by calling 1-(888) ASK-USGS and requesting USGS Open-File Report 99-158.

To contact the senior author, email Polly Sackett (psackett15@yahoo.com).

The URL of this page is http://geopubs.wr.usgs.gov/open-file/of99-158/index.html
Date created: 05/25/1999
Last modified: 10/15/1999

Email technical-support comments to Mike Diggles (mdiggles@mojave.wr.usgs.gov).