Identification_Information: Citation: Citation_Information: Originator: David W. Ramsey Originator: Dillon R. Dutton Originator: Charles R. Bacon Publication_Date: 2008 Title: Database for the Geologic Map of Mount Mazama and Crater Lake Caldera, Oregon Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: SIM 2832 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/2832 Larger_Work_Citation: Citation_Information: Originator: Charles R. Bacon Publication_Date: 2008 Title: Geologic Map of Mount Mazama and Crater Lake Caldera, Oregon Geospatial_Data_Presentation_Form: printed map Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: SIM 2832 Publication_Information: Publication_Place: Menlo Park Publisher: United States Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/2832 Description: Abstract: This digital publication contains the spatial database used to publish the geologic map in U.S. Geological Survey Scientific Investigations Map 2832 (Bacon, 2008). Crater Lake partly fills one of the most spectacular calderas of the world, an 8-by-10-km basin more than 1 km deep formed by collapse of the volcano known as Mount Mazama during a rapid series of explosive eruptions about 7,700 years ago. Having a maximum depth of 594 m, Crater Lake is the deepest lake in the United States. Crater Lake National Park, dedicated in 1902, encompasses 645 km2 of pristine forested and alpine terrain, including the lake itself, virtually all of Mount Mazama, and most of the area of the geologic map. The geology of the area was first described in detail by Diller and Patton (1902) and later by Williams (1942), whose vivid account led to international recognition of Crater Lake as the classic collapse caldera. Because of excellent preservation and access, Mount Mazama, Crater Lake caldera, and the deposits formed by the climactic eruption constitute a natural laboratory for study of volcanic and magmatic processes. For example, the climactic ejecta are renowned among volcanologists as evidence for systematic compositional zonation within a subterranean magma chamber. Mount Mazama's climactic eruption also is important as the source of the widespread Mazama ash, a useful Holocene stratigraphic marker throughout the Pacific Northwest, adjacent Canada, and offshore. A detailed bathymetric survey of the floor of Crater Lake in 2000 provides a unique record of postcaldera eruptions, the interplay between volcanism and filling of the lake, and sediment transport within this closed basin. Knowledge of the geology and eruptive history of the Mount Mazama edifice, greatly enhanced by the caldera wall exposures, gives exceptional insight into how large volcanoes of magmatic arcs grow and evolve. Lastly, the many smaller volcanoes of the High Cascades beyond the limits of Mount Mazama are a source of information on the flux of mantle-derived magma through the region. General principles of magmatic and eruptive processes revealed by the present study have been incorporated not only in scientific investigations elsewhere, but in the practical evaluation of hazards and geothermal resources in the Crater Lake region. In addition to papers in scientific journals, field trip guides, and the hazard and geothermal reports, the major product of this longterm study of Mount Mazama is the geologic map. The map is unusual because it portrays bedrock (outcrop), surficial, and lake floor geology. Caldera wall geology is depicted in detail on the accompanying geologic panoramas. Purpose: This database was constructed in order to produce a geologic map as a basis for understanding processes and volcano hazards involved in the eruptions of Crater Lake Volcano. Supplemental_Information: The spatial database used to publish the geologic map in U.S. Geological Survey Scientific Investigations Map 2832 is contained in this digital publication. This map shows the distribution and relations of volcanic units at Crater Lake in southern Oregon, including much of Crater Lake National Park. This metadata document contains information for the entire set of ArcInfo coverages included in this database. Where relevant information for individual coverages differs from that of the others, each coverage is documented separately in sequence in that metadata section. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1977 Ending_Date: 2008 Currentness_Reference: The information in this report is the most up-to-date available at the time of publication. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.305730 East_Bounding_Coordinate: -121.881941 North_Bounding_Coordinate: 43.029260 South_Bounding_Coordinate: 42.803150 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: volcanoes Theme_Keyword: caldera Theme_Keyword: geology Theme_Keyword: climactic eruption Theme_Keyword: composite volcano Theme_Keyword: effusive eruptions Theme_Keyword: explosive eruptions Theme_Keyword: pyroclastic flows Place: Place_Keyword_Thesaurus: none Place_Keyword: Mount Mazama Volcano Place_Keyword: Crater Lake Caldera Place_Keyword: Wizard Island Place_Keyword: Crater Lake Place_Keyword: Crater Lake National Park Place_Keyword: Oregon Place_Keyword: United States of America Stratum: Stratum_Keyword_Thesaurus: none Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: Quaternary Temporal_Keyword: Pleistocene Temporal_Keyword: Holocene Temporal_Keyword: Recent Access_Constraints: none Use_Constraints: Uses of this digital geologic map should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was edited for a scale of 1:24,000 means that higher resolution information is not present in the dataset. Plotting at scales larger than 1:24,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data. Acknowlegdement of the U.S. Geological Survey would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: David W. Ramsey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: Cascades Volcano Observatory Address: 1300 SE Cardinal Ct, Bldg 10, Ste 100 City: Vancouver State_or_Province: WA Postal_Code: 98683 Country: USA Contact_Electronic_Mail_Address: dramsey@usgs.gov Contact_Instructions: preferred contact by e-mail Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/sim/2832/sim_2832_sheet1.pdf Browse_Graphic_File_Description: geologic map Browse_Graphic_File_Type: PDF Data_Set_Credit: The database was compiled mainly in 1996-2004 from original geologic mapping by Charles R. Bacon (Bacon, 2008). David W. Ramsey and Dillon R. Dutton provided the GIS-expertise to bring the database and metadata to completion. Native_Data_Set_Environment: SunOS, Release 5.7, sun4u UNIX; Arc Version 7.1.2 Patch 2; ESRI ArcCatalog 8.3.0.800 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: See Entity_Attribute_Information Logical_Consistency_Report: Polygon and arc (chain-node) topology present in appropriate ArcInfo coverages. Other coverages are point, annotation or raster and do not require topologic relationships. Completeness_Report: The report is intended to describe completely the igneous and volcanic products, volcanic vent locations, and structural features of Mount Mazama Volcano and Crater Lake Caldera at 1:24,000 scale. Geological information appropriatley mapped at larger scales has been omitted. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Well located data items are intended to have a horizontal positional accuracy better than 0.5 mm at 24,000 scale, or within 12 meters on the ground. The general positional accuracy of each line in the database is indicated qualitatively within the LTYPE field in the Arc Attribute Table (see Attribute_Domain_Values). Points in the database are generally well located. The position of each data item is derived from a USGS 1:24,000 topographic base map, and therefore additonal inaccuracies may also be encountered that are within National Map Accuracy Standards. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: No vertical positional data recorded Process_Step: Process_Description: Geologic linework was compiled on USGS 1:24,000-scale topographic maps by Charles R. Bacon. The linework was then scanned at 400 dpi, georeferenced, converted to vector data using the ArcInfo command GRIDLINE , and edited on-screen to repair errors visible at map scale by David W. Ramsey, Dillon R. Dutton, and Charles R. Bacon. Polygon topology was created and each arc and polygon tagged on-screen. Plotfiles were created in ArcPlot by David W. Ramsey. Individual quadrangles were then plotted with topography and checked by Charles R. Bacon. Metadata were created by David W. Ramsey. Process_Date: 6-6-2008 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: David W. Ramsey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: Cascades Volcano Observatory Address: 1300 SE Cardinal Ct, Bldg 10, Ste 100 City: Vancouver State_or_Province: WA Postal_Code: 98683 Country: USA Contact_Electronic_Mail_Address: dramsey@usgs.gov Contact_Instructions: preferred contact by email Process_Step: Process_Description: Metadata imported. Source_Used_Citation_Abbreviation: C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\xml60.tmp Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain Point_and_Vector_Object_Count: 15937 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 208 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 6974 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 6961 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 42.333333 Standard_Parallel: 44.000000 Longitude_of_Central_Meridian: -120.500000 Latitude_of_Projection_Origin: 41.666667 False_Easting: 609601.219202 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000000 Ordinate_Resolution: 0.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: geo.aat Entity_Type_Definition: arc attribute table for the geologic coverage Entity_Type_Definition_Source: authors Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal node number for the beginning of an arc (from-node). Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal node number for the end of an arc (to-node). Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal node number for the left polygon. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal node number for the right polygon. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: GEO# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: GEO-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: LTYPE Attribute_Definition: geologic line type Attribute_Definition_Source: authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: contact, certain Enumerated_Domain_Value_Definition: boundary between geologic units, well located Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: contact, approx. located Enumerated_Domain_Value_Definition: boundary between geologic units, approximately located Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: contact, gradational Enumerated_Domain_Value_Definition: gradational boundary between geologic units Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: contact, internal Enumerated_Domain_Value_Definition: boundary between internal lobes of geologic unit Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: normal fault, certain Enumerated_Domain_Value_Definition: normal fault, well located Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: cl-floor map boundary Enumerated_Domain_Value_Definition: boundary of extent of lakefloor mapping Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: water boundary Enumerated_Domain_Value_Definition: lake shoreline Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: map boundary Enumerated_Domain_Value_Definition: margins of quadrangle map Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: dike Enumerated_Domain_Value_Definition: dike Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: slump Enumerated_Domain_Value_Definition: boundary of slump scarp Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: DIKE_UNIT Attribute_Definition: dike unit line labels Attribute_Definition_Source: authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: dike unit line labels, only present where LTYPE is 'dike' Enumerated_Domain_Value_Definition: explained in list of map units accompanying printed map, labelled 'unidentified' if unit unknown Enumerated_Domain_Value_Definition_Source: authors Detailed_Description: Entity_Type: Entity_Type_Label: geo.pat Entity_Type_Definition: polygon attribute table for the geologic coverage Entity_Type_Definition_Source: authors Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: GEO# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: GEO-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PTYPE Attribute_Definition: geologic unit polygon labels Attribute_Definition_Source: authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: geologic unit polygon labels Enumerated_Domain_Value_Definition: explained in list of map units accompanying printed map Enumerated_Domain_Value_Definition_Source: authors Detailed_Description: Entity_Type: Entity_Type_Label: vent.pat Entity_Type_Definition: point attribute table for the vent coverage Entity_Type_Definition_Source: authors Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: VENT# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: VENT-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PTTYPE Attribute_Definition: description of volcanic vent Attribute_Definition_Source: authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: vent Enumerated_Domain_Value_Definition: volcanic vent, well located Enumerated_Domain_Value_Definition_Source: authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: vent, concealed Enumerated_Domain_Value_Definition: volcanic vent, location concealed Enumerated_Domain_Value_Definition_Source: authors Detailed_Description: Entity_Type: Entity_Type_Label: dash.aat Entity_Type_Definition: arc attribute table for the extensive line feature coverage Entity_Type_Definition_Source: authors Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal node number for the beginning of an arc (from-node). Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal node number for the end of an arc (to-node). Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal node number for the left polygon. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal node number for the right polygon. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: DASH# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: DASH-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: LTYPE Attribute_Definition: geologic line type of extensive feature Attribute_Definition_Source: authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: bedform crest Enumerated_Domain_Value_Definition: trace of center line of bedform Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: contact, certain Enumerated_Domain_Value_Definition: contact between geologic units, well located Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: moraine crest Enumerated_Domain_Value_Definition: crest of glacial moraine deposit Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: moraine crest, concealed Enumerated_Domain_Value_Definition: crest of glacial moraine deposit, location concealed Enumerated_Domain_Value_Definition_Source: authors Enumerated_Domain: Enumerated_Domain_Value: normal fault, concealed Enumerated_Domain_Value_Definition: normal fault, location concealed Enumerated_Domain_Value_Definition_Source: authors Detailed_Description: Entity_Type: Entity_Type_Label: dates.pat Entity_Type_Definition: point attribute table for the dated sample locations and geothermal drillhole locations coverage Entity_Type_Definition_Source: authors Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Area is always zero for point coverages. Values are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Perimeter is always zero for point coverages. Values are automatically generated. Attribute: Attribute_Label: DATES# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: DATES-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: PTTYPE Attribute_Definition: description of point location Attribute_Definition_Source: authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: sample location Enumerated_Domain_Value_Definition: location where sample collected Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: AGE Attribute_Definition: age of sample as determined through laboratory experiments Attribute_Definition_Source: authors Attribute: Attribute_Label: SAMPNO Attribute_Definition: unique numeric identifier for sample Attribute_Definition_Source: authors Overview_Description: Entity_and_Attribute_Overview: Lines (arcs) are recorded as strings sets of sequential of vectors and are described in an arc attribute table ("filename".AAT). The lines define the boundaries of the map units and other delineated polygons as well as linear features such as but not limited to, faults, lava tubes, and moraine crests. These distinctions, including geologic characterizations of linear features, are recorded as attributes in the LTYPE field in the AAT. Map units (polygons) are described in a polygon attribute table ("filename".PAT). The identities of the map units from compilation sources are recorded in the PTYPE field of the PAT by unit symbol. Note that ArcInfo coverages cannot contain both polygon and point information, so only coverages with polygon information will have a polygon attribute table, and these coverages will not have a point attribute table. Files containing point features are described in a point attribute table ("filename".PAT). Examples of point features include volcanic vents and geothermal drillhole locations. Almost all of the attributes in the various attribute tables included in the report are set or calculated by ArcInfo and include "filename"#, "filename"-ID, LENGTH, FNODE, TNODE, RPOLY, LPOLY, AREA, and PERIMETER. The rest are defined by the author as described above and include LTYPE, PTYPE, PTTYPE, SAMPNO, and DIKE_UNIT. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 Address: Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: (303)202-4200 Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: (303)202-4695 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: These files are integral to U.S. Geological Survey SIM 2832 Distribution_Liability: This database, identified as SIM 2832, has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCG Format_Version_Number: ArcInfo version 7.2.1 (UNIX) Transfer_Size: 22.214 Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Metadata_Reference_Information: Metadata_Date: 20080421 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: David W. Ramsey Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 1300 SE Cardinal Ct Address: Building 10, Suite 100 City: Vancouver State_or_Province: WA Postal_Code: 98683 Country: USA Contact_Voice_Telephone: (360)993-8978 Contact_Facsimile_Telephone: (360)993-8980 Contact_Electronic_Mail_Address: dramsey@usgs.gov Contact_Instructions: prefered contact by e-mail Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile