Regional Geology of Eastern Labrador
Readme File for GIS Data Organization

Data Compilation

The compilation is available as: 
1) a GIS .mxd project file and associated data that can be opened with ESRI’s ArcMap version 10.2 and above, 
2) a GIS published map file (.pmf) and associated data that can be opened with the free viewer application ESRI’s ArcReader version 10.2 and above, 
3) shapefiles and excel point files of features converted from the ArcGIS file geodatabases that can be opened in most GIS programs, and
4) imagery (.jpg scans and photos) of charts, rock slabs, field photos, and thin sections (photomicrographs) that are hyperlinked from the file geodatabases, shapefiles and excel files.

The compilation also includes the necessary Fonts, Layer and Style files for ArcMapTM  and ArcReaderTM users, in the \StyleFonts_LayerFiles folder – make sure these are installed first.

The ArcMap .mxd and ArcReader .pmf files have 21 main layers, many of which contain sub-layers.  Layers in the Table of Contents are organized by themes (i.e., a group layer) and the structure has been optimized to facilitate viewing of superimposed datasets. All layers and data have been projected to UTM Zone 21, NAD27 datum.  The root directory for the GIS files is Regional Geology of Eastern Labrador\Data\.  The main MXD file (Geology_Eastern_Labrador.mxd) and PMF file (Geology_Eastern_labrador.pmf) are in the main \Data directory.  Hyperlinked imagery in the file geodatabases is based off of the location of the MXD file.

An explanation of each layer is provided below. For a more detailed listing of the contents, please refer to the \Metadata\GIS Contents Summary.rtf file.  For a description of each column of the point data layers, please refer to the \Metadata\Metadata_Tables_Spreadsheets.xlsx file.

ArcGIS Files (for ArcMap 10.2 and later) 
Geology_Eastern_Labrador.mxd

MapAnno: topographic annotations (e.g., Gilbert River), visible at 1:250,000 and larger scales

Geochron:
GeochronArK: K-Ar and Ar-Ar geochronological data (hyperlinked to Data\Imagery\ScannedGeochron\ArK)

	GeochronNdSm: Nd-Sm geochronological data

GeochronRbSr: Rb-Sr geochronological data (hyperlinked to Data\magery\ScannedGeochron\RbSr)

GeochronUPb: U-Pb geochronological data (hyperlinked to Data\Imagery\ScannedGeochron\UPb)

Geothermobarometry: geothermobarometric data

Mineral_Occurrences: mineral occurrences in eastern Labrador

MineralXRD: minerals identified by XRD method

OxygenIsotopeData: oxygen isotope data (7 records)

Paleomag:
Paleomag: paleomagnetic data, some unpublished

PaleomagEmslie: a cross-referencing tool linking Emslie’s paleomag sites, with his field sites and labels used in journal publication

Petrography: petrographic data

Photomicrographs: photomicrographs (hyperlinked to Data\Imagery\Photomicrographs)

Photos: field photographs (hyperlinked to Data\Imagery\ScannedPhotos)

Samples: rock samples collected (hyperlinked to Data\Imagery\ScannedSlabs)

Stations: field station locations

Structure:
Dykes: extracted from Structure layer (included in Structure as well)

Structure: listing of all structural data for eastern Labrador

StructureFiltered_Outcrop: structural data filtered using S. Colman-Sadd’s PlotSymbol program to move overlapping symbols at the 1:100 000-scale, remove lower priority symbols, and add outcrop locations
	
StructureKinematics: structural kinematic data

WholeRockGeochemistry: whole rock geochemical data

Topographic Data: various topographic data layers 
The 1:50 000 and 1:250 000 scale data are from the National Topographic Data Base (NTDB). [Permission to provide the NTDB layers (NAD27 format) was provided by the Director of GIS and Mapping Division, Department of Fisheries and Land Resources, Government of Newfoundland and Labrador, July 2017.]

Neatline: neat line polygons of Geology Maps 2010-01 to 2010-25 (hyperlinked to ..\PDF_Maps)

	NTS_Grid_Box: neat line polygons of 1:50 000 NTS map sheets

	MapGridLines_50: 10 km UTM lines

	Elevation_50: NTDB contours at 1:50 000 scale 

	Elevation_250: NTDB contours at 1:250 000 scale

	Road_Points: field gps point readings of road location
	
LabradorRoads: polyline estimate of road location from gps readings and other sources
	
Transportation_50: NTDB roads at 1:50 000-scale
	
Transportation_250: NTDB roads at 1:250 000-scale
	
Water_Lines_50: NTDB rivers and shorelines at 1:50 000-scale
	
Water_Lines_250: NTDB rivers and shorelines at 1:250 000-scale
	
Water_Polygons_50: NTDB lakes and ocean (white fill) at 1:50 000-scale
	
Water_Polygons_250: NTDB lakes and ocean (white fill) at 1:250 000-scale

Basemap:

WaterLines_NL: 1:1 000 000-scale rivers

Lakes_NL: 1:1 000 000-scale lake polygons

Ocean: 1:1 000 000-scale ocean polygon

Geology:
SELab_Geology_Anno: geological unit annotations (e.g., P3Crg), visible at 1:250,000 and larger scales

Index_Eastern_Labrador_Structure: regional structural image (from Figure 5.7 of the report)

SELab_Faults: 1:100 000-scale faults (need fault ttf fonts in StyleFonts folder)

	SELab_Contacts: contacts, neatline and limit of mapping for 1:100 000-scale mapping

SELab_Bedrock_Geology: 1:100 000-scale geology units (polygons)

GeoPhysics: 
Industry Surveys:
	Industry_Airborne_Survey_Index: information about each airborne survey
	Industry_Flight_Lines: airborne flight line information
	Digital Terrain Model: DTM raster tif images
	EM: electromagnetic raster tif images
	Mag: various magnetic raster tif images
	Radiometric: various radiometric raster tif images

	Government Surveys:
		Govt_Airborne_Survey_Index: information about the gov’t survey (c. 1970)
		Government Residual Field Magnetics: raster tif images for gov’t aeromag surveys

Original_Geological_Map_Compilations: scans of post-season hand-drawn and coloured 1:100 000-scale geological maps

Traverse_maps: scans of hand-drawn 1:100 000-scale field traverse maps; colours indicate person who led the traverse (initials are at beginning of traverse), solid lines indicate ground traverses and dashed lines indicate helicopter traverses

LandBase: basemap for Newfoundland and Labrador and surrounding provinces as polygons (only displayed at scales smaller than 1:1 000 000)

Directory Structure

See GSNL_Memoir_4.rtf readme file, in the main folder, for the general layout of the folders.