Mineral resource zones of Monterey County, California

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

Title: Mineral resource zones of Monterey County, California

Abstract:

This map depicts the distribution of Mineral Resource Zones for Monterey County, California. Construction minerals such as sand, gravel, and stone are classified by the State Geologist into four mineral resource zones based on the likelihood of the presence of mineral deposits and their economic value. The areas that contain minerals that can be economically extracted are classified as MRZ 2 and are essential for supplying aggregate used in residential, commercial, and industrial building projects, as well as in public-works projects such as roads, bridges, and pipelines.

1. How should this data set be cited?

   Rosenberg, Lewis I., 2001, Mineral resource zones of Monterey County, California.

   This is part of the following larger work.

   Monterey, County of , 2001, Monterey County 21st Century General Plan Update Program.

   Online Links:

   • <http://www/co.monterey.ca.us/gpu>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -121.991705

   East_Bounding_Coordinate: -121.045157

   North_Bounding_Coordinate: 36.932444

   South_Bounding_Coordinate: 36.241091

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 1999

   Currentness_Reference: publication date

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (67)

   2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: State Plane Coordinate System

      State_Plane_Coordinate_System:

      SPCS_Zone_Identifier: 404

      Lambert_Conformal_Conic:

      Standard_Parallel: 36.000000

      Standard_Parallel: 37.250000

      Longitude_of_Central_Meridian: -119.000000

      Latitude_of_Projection_Origin: 35.333333

      False_Easting: 6561666.666667

      False_Northing: 1640416.666667

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000512
      Ordinates (y-coordinates) are specified to the nearest 0.000512
      Planar coordinates are specified in survey feet

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
      

7. How does the data set describe geographic features?

   mrz

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   MRZ

   Mineral Resource Zone Classification (Source: CDMG)

   Value	Definition
   MRZ-1	Areas where available geologic information indicates that little likelihood exists for the presence of significant mineral resources.
   MRZ-2	Areas underlain by mineral deposits where adequate information indicates that significant mineral deposits are present or where it is judged that a high likelihood exist for their presence.
   MRZ-3	Areas containing mineral deposits the significance of which cannot be evaluated from available data
   MRZ-4	Areas where available information is inadequate for assignment to any other category.

   SOURCE

   Source of MRZ zonation (Source: author)

   List of names

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Rosenberg, Lewis I.

2. Who also contributed to the data set?

   These data were provided to Rosenberg and the County of Monterey under license agreements with the California Department of Conservation, Division of Mines and Geology.

3. To whom should users address questions about the data?

   Lew Rosenberg
   Consulting Geologist
   P.O. Box 183
   Templeton, CA 93465-0183
   

   (805) 434-1750 (voice)
   (805) 434-1750 (FAX)
   Lrosenberg@thegrid.net
   

   Hours_of_Service: Monday to Friday, 8 AM to 5 PM, Pacific Time

The intended use of this map is to provide a mineral resource zonation for regional planning studies.

1. From what previous works were the data drawn?

   Kohler-Antablin (1999) (source 1 of 2)

   Kohler-Antablin, Susan, 1999, Update of Mineral Land Classification: Aggregate materials in the Monterey Bay Production-Consumption Region: Open-File Report 99-01, California Division of Mines and Geology, Sacramento, CA.

   Type_of_Source_Media: CD-ROM

   Source_Scale_Denominator: 48000

   Source_Contribution:

   Location and zonation of State-designated Mineral Resource Zones

   Stinson (1982) (source 2 of 2)

   Stinson, M.C., 1982, Mineral land classification of Granite Rock Company limestone deposits in Pico Blanco area, Monterey County, California: Open-File Report 81-14 SF, California Division of Mines and Geology.

   Other_Citation_Details: 20 p., 3 sheets.

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 24000

   Source_Contribution: MRZ zonation for the Pico Blanco limestone deposit

2. How were the data generated, processed, and modified?

   Date: 1999 (process 1 of 3)

   CDGM staff converted the paper maps from SR-146 and OF 99-01 by scanning and manual digitization. The native files were created in MapInfo TAB format. CDMG converted the data into ESRI shapefile format.

   Person who carried out this activity:
   

   Joy Arthur
   California Department of Conservation, Division of Mines and Geology
   

   (916) 327-1042 (voice)
   

   Data sources used in this process:

   • Kohler-Antablin (1999)

   Date: 09-Feb-2001 (process 2 of 3)

   The MRZ files (one per quadrangle) were reprojected from UTM Zone 10, 1983, feet to Calif. State Plane Zone 4, 1983, feet. The reprojected data were clipped to the Monterey County boundary. The individual files for each 7.5-minute quadrangle were merged into one shapefile.

   Person who carried out this activity:
   

   Lew Rosenberg
   Consulting Geologist
   P.O. Box 183
   Templeton, CA 93465-0183
   

   (805) 434-1750 (voice)
   (805) 434-1750 (FAX)
   Lrosenberg@thegrid.net
   

   Hours_of_Service: Monday to Friday, 8 AM to 5 PM, Pacific Time

   Date: 04-May-2001 (process 3 of 3)

   MRZ locations were manually traced on a digital raster graphic version of the same base map as used in the original report.

   Person who carried out this activity:
   

   Lew Rosenberg
   Consulting Geologist
   P.O. Box 183
   Templeton, CA 93465-0183
   

   (805) 434-1750 (voice)
   (805) 434-1750 (FAX)
   Lrosenberg@thegrid.net
   

   Hours_of_Service: Monday to Friday, 8 AM to 5 PM, Pacific Time

   Data sources used in this process:

   • Stinson (1982)

1. How well have the observations been checked?

   All attributes created during the creation process were verified by displaying the lines in both the database and the spatial coverage, but no formal tests were performed.

2. How accurate are the geographic locations?

   The horizontal positional accuracy is not specified in the metadata file that this database is extracted from.

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

   This database includes the Mineral Resource Zones as mapped by the California Division of Geology (CDMG) for the central coast area. The area covering Monterey County was extracted from files provided by CDMG. It is a digital version of the paper maps included in CDMG Special Report 146 and Open-File Report 99-01.

5. How consistent are the relationships among the observations, including topology?

   These data are believed to be logically consistent, though no tests were performed.

Are there legal restrictions on access or use of the data?

Access_Constraints:

Contact the Monterey County Environmental Resource Policy Department. This data set is derived from digital files copyrighted by the California Department of Conservation, Division of Mines and Geology (DOC/DMG) and have not been released to the general public although all or portions of these files may be released to the general public by DOC/DMG in the future.

Use_Constraints:

These data may not be distributed without the written permission of the California Division of Mines and Geology or the County of Monterey.

1. Who distributes the data set? (Distributor 1 of 1)

   Monterey County Environmental Resource Policy Department
   Database Coordinator
   P.O. Box 180
   Salinas, CA 93902
   

   (831) 755-5353 (voice)
   (831) 796-3062 (FAX)
   

   Hours_of_Service: Monday to Friday, 8 AM to 5 PM, Pacific Time

2. What's the catalog number I need to order this data set?

3. What legal disclaimers am I supposed to read?

   Open-File Report 99-01 was produced by DOC/DMG. These digital files are copyrighted by the DOC/DMG and have not been released to the general public although all or portions of these files may be released to the general public by DOC/DMG in the future. This file may not be distributed without the written permission of DOC/DMG.

   This database is intended for regional planning purposes and not for site-specific evaluation. Information in this data set is preliminary in nature. This information is provided with understanding that it is not guaranteed to be correct or and conclusions drawn from such information, whether from individual use or aggregate use with other data, are the responsibility of the user.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Size: 0.215

   • Cost to order the data:

5. Is there some other way to get the data?

   Contact the Monterey County Environmental Resource Policy Department for a printed copy of a map showing the Mineral Resource Zones.

6. What hardware or software do I need in order to use the data set?

   For those users that do not have ArcView or ARC/INFO, ESRI provides a free GIS data viewer, ArcExplorer, that can be downloaded from their website at: <http://www.esri.com/software/arcexplorer/index.html>. ArcExplorer is currently only supported on the Windows 95/98 or Windows NT platforms.

Dates:

Last modified: 04-May-2001
Last Reviewed: 04-May-2001

Metadata author:

Lew Rosenberg
Consulting Geologist
P.O. Box 183
Templeton, CA 93465-0183

(805) 434-1750 (voice)
(805) 434-1750 (FAX)
Lrosenberg@thegrid.net

Hours_of_Service: Monday to Friday, 8 AM to 5 PM, Pacific Time

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>