revised: 05-Feb-2015

NMBGMR Draft Geologic Data Model - v. 1.0.4
POLYGONS: Metamorphic Facies

In the interests of standardization and interoperability, we are migrating our geologic maps into the USGS NCGMP09 data model. However, our well data model is still actively being used. Documentation for the NMBGMR geology data model is being provided for users with legacy data in this model. We also hope that it will provoke discussion in the ongoing effort to improve NCGMP09 and other models.

Contents:

Feature Class: Metamorphic_poly

This feature class represents areas of similar metamorphic grade and mineral assemblages and is built from Isograd_line.

Field Name Field Alias Length
(text fields)		 Field Type Field Value Default Allow Nulls? Attributes / Examples Description / Notes
FGDC_code " 16 String variable [null] TRUE 30.3.12 FGDC geologic symbol reference number.
MmID Metamorphic_ID 50 String variable [null] TRUE undefined, [variable, e.g. Garnet, Biotite, Andalusite-Sillimanite]  
Label " 50 String variable [null] TRUE undefined, [variable, e.g. Garnet, Biotite, Andalusite-Sillimanite?] includes queries
MMFacies " 50 String variable [null] TRUE unspecified, Greenschist, Amphibolite, Granulite  
Assemblage " 128 String variable [null] TRUE Bt-staur-gar  
Confidence " 16 String CVD [null] TRUE unspecified, certain, probable, uncertain

confidence regarding feature level ID
General_ID Generalized_ID 50 String variable [null] TRUE Kyanite How to Generalize this polygon.
SourceID " 128 String variable [null] TRUE unknown; unspecified; Smith, 2006b [variable] Feature level metadata (who mapped this); related to bibliographic detail
Descriptn Description 255 String variable [null] TRUE Description of area of polygon (feature level)  

Feature Class: Metamorphic_pt

This point feature stores attributes about metamorphic grade and mineral assemblages. It could be used with Isograd_line to build polgyons in Metamorphic_poly if the point attributes were consistent over an area bounded by the Isograd_lines.

Field Name Field Alias Length
(text fields)		 Field Type Field Value Default Allow Nulls? Attributes / Examples Description / Notes
FGDC_code " 16 String variable [null] TRUE 30.3.12 FGDC geologic symbol reference number.
MmID Metamorphic_ID 50 String variable [null] TRUE undefined, [variable, e.g. Garnet, Biotite, Andalusite-Sillimanite]  
Label " 50 String variable [null] TRUE undefined, [variable, e.g. Garnet, Biotite, Andalusite-Sillimanite?] includes queries
MMFacies " 50 String variable [null] TRUE unspecified, Greenschist, Amphibolite, Granulite  
Assemblage " 128 String variable [null] TRUE Bt-staur-gar  
Confidence " 16 String CVD [null] TRUE unspecified, certain, probable, uncertain

confidence regarding feature level ID
General_ID Generalized_ID 50 String variable [null] TRUE Kyanite How to Generalize this polygon.
SourceID " 128 String variable [null] TRUE unknown; unspecified; Smith, 2006b [variable] Feature level metadata (who mapped this); related to bibliographic detail
Descriptn Description 255 String variable [null] TRUE Description of area of polygon (feature level)