Download 1:500K Tectonic units of Western Australia

DEPARTMENT OF MINES AND PETROLEUM
Spatial Data Infrastructure
Data Dictionary for Feature Classes
1:500K Tectonic units of Western Australia
Version 1.0
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Data dictionary
In Geographic Information Systems (GIS), data dictionaries are used as a means to record the names of the
attributes (items) in a feature class, together with a description of the attribute values, and lookup tables, for
which a data dictionary has been provided.
Data dictionary table contains the following information: file name, feature category, feature class, spatial type,
description, item name, key, option, type, width and item description.
For item type, a code is used to describe the field type:
C = Character field
D = Date field
N = Number field
For Key, a code is used to indicate whether the item or field is a key used to link to tables:
P = Primary key
F = Foreign key
Null = Not a key
For Optional, a code is used to indicate whether the items or fields that may or may not be provided:
Y = Optional
Null = Not optional
A user can view the attribute table of a theme as described in the data dictionary listing at the beginning of this
document and see the item names along with the data type and description.
When a user views the attribute table, the user will see the item names described in the data dictionary, and their
contents. The user will also see several items that are standard to ESRI ArcSDE feature classes. These standard
(internal) items have been omitted from the enclosed data dictionary descriptions for ease of reading. The
omitted items are as follows:
Item names
Type Item description
OBJECTID
N
Unique identifier for each object in the feature class
SHAPE
C
Geometry type
SHAPE.AREA
N
Area of polygon – limited to polygon data
SHAPE.LEN
N
Length of line – limited to line data
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Feature class :
GEOS_TECTONIC_UNITS_POLYGON_500K_GSD
Feature category:
Spatial type:
Legend name:
Description:
Source:
DMP custodian:
ANZLIC metadata ID:
Conditions of access:
Item name
Geology
Region
1:500K Tectonic units of Western Australia
1:500 000 Tectonic units of Western Australia
Department of Mines and Petroleum
Geological Survey Division
Subject to data custodian license agreement. For internal use only.
Key
Display
Type
Width
Description
SORT
N
Sort order for data legend
TECTNO
N
Tectonic identifier linking to Explanatory Notes database
TECTCODE
C
30 Tectonic unit code
TECTTYPE
C
50 Tectonic unit type
LITHOLOGY
C
50 Predominant or characteristic rock type(s) of tectonic unit
TECTSETTIN
C
30 Tectonic setting of unit
TSETT_QUAL
C
50 Tectonic setting qualifier
PARENTCODE
C
30 Code of the parent tectonic unit for the unit displayed in the TECTCODE field
PARENTNAME
C
100 Name of the parent tectonic unit for the unit displayed in the TECTCODE field
PARENTTYPE
C
STATE
C
100 Western Australia: State-level tectonic unit
WATECTUNIT
C
100 State-scale tectonic unit
SSUITE_TEC
C
100 Supersuite tectonic; all igneous rocks related to a specific tectonic event
SUITE_TEC
C
100 Suite tectonic; all igneous rocks related to a specific parental magmatic
composition generated at a specific time
CRATON
C
100 Geologically stable part of the Earth’s crust, mostly older than 2.4 Ga
SUPERTERRA
C
100 Superterrane; a group of related terranes
CRATON_TER
C
100 Craton terrane; a fault-bounded body of rock within a craton, with a distinct
geological history
DOMAIN_
C
100 A fault-bounded body of rock within a CRATON_TER
GREENSTONE
C
100 Greenstone belt or granitic complex
SUPERBASIN
C
100 A group of related basins of a similar age
BASIN
C
100 Accumulation of sedimentary rocks in a regional crustal depression
SUBBASIN
C
100 First order sub-division of a BASIN
SUBBASIN_E
C
100 Sub-basin element; sub-division of a SUBBASIN, generally structural
TECTNAME
C
100 Tectonic unit name
OROGEN
C
100 Tectonic belt characterized by regional deformation, metamorphism,
magmatism, and related sedimentation
PROVINCE
C
100 Tectonic unit with a complex deformation, metamorphic, and magmatic history
PROV_TZONE
C
100 Tectonic subdivision of PROVINCE into terranes or zones
TECT_SUBDI
C
100 Tectonic subdivision of PROV_TZONE
OROG_FOR
C
100 Orogenic foreland; an area of craton and/or basin reworked by orogenic events
OROG_FORSU
C
100 Orogenic foreland sub-unit; structural feature within an OROG_FOR
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50 Type of the parent tectonic unit for the unit displayed in the TECTCODE field
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IN_OUTLIER
C
100 Inlier or outlier; older tectonic unit surrounded by younger unit or younger
tectonic unit surrounded by older uni
EVENTS
C
1000 Tectonic and magmatic events affecting the tectonic unit (ages in brackets
indicate maximum and minimum age in millions of years)
ERA_FROM
C
30 Maximum age of tectonic unit as described by geological timescale (era, e.g.
Mesozoic)
ERA_TO
C
30 Minimum age of tectonic unit as described by geological timescale (era, e.g.
Cenozoic)
MAX_AGE_MA
C
100 Maximum possible age of tectonic unit in millions of years
MIN_AGE_MA
C
100 Minimum possible age of tectonic unit in millions of years
CUSTODIAN
C
10 Organization holding source data
PUBLISH_DA
D
Date the layer was published
DRAWORDER
C
50 Representation of unit overlap in the draw order of polygons (A is uppermost)
TECTCOLOUR
C
100 Field for grouping and colour design purposes, based on dominant age (codes as
in Explanatory Notes database) and characteristic lithologies.
SYMBOL
C
254 Dominant age and characteristic lithologies, based on TECTCOLOUR for plot
purposes
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