Pb-Pb Model Age Grid (ores)

This is an interpolated grid of Pb-Pb model age data from primarily ore-related rocks and minerals. The point data used for the interpolation is from the Pb-Pb dataset held in the Isotopic Atlas as of February 2021, and the model ages are calculated using Stacey and Kramers (1975) Pb-evolution model. Point data added to the Isotopic Atlas after February 2021 is not represented in this grid. The grid was generated with Esri's ArcMap Spatial Analyst interpolation tool using the Natural Neighbor algorithm and 0.01 degree cell size. Two classifications are provided for this grid; a Jenks natural breaks classification with ten classes (classification 1) as per Champion (2013) http://pid.geoscience.gov.au/dataset/ga/77772, and; the same six-class interval binning and colour scheme applied to the source point data in the Pb-Pb Isotope Data layer (classification 2).

Simple

Identification info

Status
Point of contact
Role Organisation Electronic mail address
Point of contact

Geoscience Australia

clientservices@ga.gov.au

Spatial representation type
Topic category
  • Geoscientific information

Extent

Extent

N
S
E
W




Maintenance and update frequency
As needed
Theme

  • Isotopes

  • Geochronology

  • Isotope Geochemistry

  • Pb-Pb

  • model age

Place

  • World

Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research

  • Earth Sciences

Resource constraints

Use limitation

https://creativecommons.org/licenses/by/4.0

Access constraints
Licence Unrestricted
Use constraints
Licence Unrestricted
Language
English
Character encoding
UTF8

Distribution Information

OnLine resource

isotope:pbpb_model_age_grid

Pb-Pb Model Age Grid (ores)

Resource lineage

Hierarchy level
Dataset

Reference System Information

Reference system identifier
EPSG:4283

Reference System Information

Reference system identifier
CRS:84

Metadata

Metadata identifier
urn:uuid/69a819cf364145e0df4cbf6b977380637822fc5e

Language
English
Character encoding
anyValidURI
Contact
Role Organisation Electronic mail address
Point of contact

Geoscience Australia

clientservices@ga.gov.au

Point of contact

Type of resource

Resource type
Dataset

Metadata linkage

Function
Complete Metadata
Metadata linkage

http://portal.auscope.org/geonetwork/srv/api/records/177abe2c-9efe-4fd2-a66e-0f1e099c3047

Date info (Revision)
2023-08-18T07:56:01
Date info (Creation)
2025-06-16T02:54:00

Metadata standard

Title

ISO 19115-3

 
 

Overviews

Spatial extent

Keywords

Geochronology Isotope Geochemistry Isotopes Pb-Pb model age
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research

Earth Sciences


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