Abstract

Forward modelling of potential field data, combined with new geological mapping and deep seismic reflection transects acquired by the Australian Geodynamics Cooperative Research Centre (AGCRC), has led to testing of robust crustal architectural models for the eastern Lachlan Orogen of New South Wales. This integrated analysis has led to new subsurface inferences unlikely to be deduced solely from any of the individual datasets used. The overall Palaeozoic history of the eastern Lachlan Orogen implied by the integrated analysis of geophysical and geological datasets, involves: formation of an Ordovician oceanic island arc; early Silurian thin-skinned east-directed overthrusting of a continental backarc basin over the arc; generation of Silurian granites due to crustal thickening; early Silurian to early Devonian rifting, resulting in the dismemberment of the deformed arc-basin complex, and formation of a series of arc fragments with intervening thin basins; tight, asymmetric folding of these basins during the Early to Mid Devonian, with some granite magmatism; extensive Carboniferous thin-skinned thrust stacking involving both east-, and west-directed transport, and slicing of the upper structural level of earlier antiformal stacks, together with granite roof zones; and final granitic arc magmatism during amalgamation with the New England Orogen.
Google map showing geographic bounding box with values North bound -30.25 East bound 153.15 West bound 141.0 South bound -39.25
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Product Type/Sub Type

dataset - External Publication - Scientific Journal Paper

Constraints

license
Non-Exclusive licence to publish copyright (please provide TRIM link)

Author(s)

Date (publication)

2001

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

External Publication
Scientific Journal Paper
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-30.25
East bound
153.15
West bound
141.0
South bound
-39.25

Lineage

Unknown

Digital Transfer Options

onLine

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-fa42-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2010-10-25

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
This product is not available for download due to licence restrictions.

For more information, please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays