sir2011-5210_readme.txt

DESCRIPTION OF THE DIGITAL DATABASE FOR

Biomarker Chemistry and Flux Quantification Methods for 
Natural Petroleum Seeps and Produced Oils, Offshore 
Southern California

By Thomas D. Lorenson, Ira Leifer, Florence L. Wong, 
Robert J. Rosenbauer, Pamela L. Campbell, Angela Lam, 
Frances D. Hostettler, Jens Greinert, David P. Finlayson, 
Eliza S. Bradley, and Bruce P. Luyendyk

2011

USGS SCIENTIFIC INVESTIGATIONS REPORT 2011-5210


INTRODUCTION

This digital database for the Biomarker Chemistry and Flux 
Quantification Methods for Natural Petroleum Seeps and 
Produced Oils, Offshore Southern California, includes one 
ESRI shapefile of point data and attributes along with 
supporting files and metadata. The files have been combined 
in a single zip file.

All GIS data are in unprojected geographic coordinates with 
horizontal datum WGS84.

The database provides the physical location and basic 
identifying attributes for samples collected for this study 
of natural petroleum seeps and produced oils along the 
California coast and nearshore areas. Locations were 
determined by GPS with a precision of +/- 5 m.


DIGITAL DATABASE AND METADATA PACKAGE (sir2011-
5210_data.zip)

The database package includes the following files:

sir2011-5210_readme.txt - this readme file

caseeps11sir.shp - This plus the next four files constitute 
the location and attribute data in ESRI shapefile format, 
which may be used in ESRI ArcGIS products and other 
software that shares the ESRI open specifications.

caseeps11sir.dbf
caseeps11sir.sbn
caseeps11sir.sbx
caseeps11sir.shx
caseeps11sir.lyr - ArcGIS layer file, provides symbology 
     used in illustrations from this report 
caseeps11sir.prj - projection parameters
caseeps11sir.shp.xml - FGDC-compliant metadata in XML 
     format, which can be read from within ArcCatalog or 
     any web browser
caseeps11sir.txt - FGDC-compliant metadata in text format
caseepsllsir.gif - browse image of data set

The material described above is available on the World-Wide 
Web at http://pubs.usgs.gov/sir/2011/5210/.


ZIP FILES

The files described above are packaged within a ZIP file. 
Utilities to uncompress ZIP files are available for most 
operating systems and may be found readily with a simple 
web search.

DIGITAL DATABASE FORMAT

The database in this report was compiled in ArcGIS, a 
commercial Geographic Information System (ESRI, Redlands, 
California).


OBTAINING THE DIGITAL DATABASE

Go to 

http://pubs.usgs.gov/sir/2011/5210/

to access the database package and the remainder of this 
publication.