INVITATION TO ATTEND

THE AGCRC–AGSO-GSNSW-FRACTAL GRAPHICS

 

EASTERN LACHLAN OROGEN WORKSHOP

 

7-9 March 2001

Orange Ex-Services’ Club Ltd

231 – 242 Anson Street

Orange, NSW

 

The Australian Geodynamics Cooperative Research Centre (AGCRC), Geological Survey of New South Wales (GSNSW), Australian Geological Survey Organisation (AGSO) and Fractal Graphics will hold a 3 day workshop to present results of their recent work in the Eastern Lachlan Orogen.

 

The core of the workshop will be a discussion of the results of the deep seismic reflection and refraction data, collected in 1997 and 1999, designed to shed light on crustal architecture of different belts of Ordovician volcanics, volcaniclastics and intrusives that form part of the Macquarie Arc. This arc was disrupted during Silurian and Devonian extension and by later contraction. The work was also designed to contribute to the understanding of the geodynamic setting of some Lachlan Orogen mineral systems. North-south and east-west seismic data were acquired across the Molong volcanic belt north and south of Orange; and east-west lines were acquired across the Junee-Narromine volcanic belt south of Lake Cowal, and several kilometres north of the Gidginbung deposit.

 

Other topics to be covered will include aspects of the regional geology, gravity and magnetic modelling, “worming” of potential field data, building of a 3D geological model for the region, and some results of Ar Ar dating of deformational events.

 

PRELIMINARY PROGRAM 7-8 MARCH 2001

 

Outline of the Project – R Korsch (AGSO)

Geological issues in the Eastern Lachlan Orogen – R Glen (GSNSW), O Raymond and P Lyons (AGSO)

Capabilities of Seismic in Hard Rock Terranes –L Jones (AGSO)

Acquisition of Seismic and Processing: An introduction – L Jones (AGSO)

Time-Space Plot and PREDICT – A Cross (AGSO)

The Seismic Refraction Transect – D Finalyson (AGSO) et al

Presentation of the 1997 Seismic Data and Interpretations – R Korsch (AGSO), R Glen (GSNSW) et al

Presentation of the 1999 Seismic Data and Interpretations – R Korsch (AGSO), R Glen (GSNSW) et al

Gravity Signature of Eastern Lachlan Plutons – P Lennox (UNSW)

Gravity and Magnetic Modelling – N Direen (AGSO)

3D Models of Eastern Lachlan – N Archibald (Fractal Graphics) et al

·         Worming of the gravity and magnetic data

·         Building the 3D geological model

Siluro-Devonian Extension: Jemalong Trough – O Raymond (AGSO)

Ar-Ar Dating of Deformational Events – R Glen (GSNSW) et al

Mineral Systems Implications in the Eastern Lachlan – P Lyons (AGSO) et al

New Products on Forbes Sheet – P Lyons (AGSO)

GSNSW Future Directions – T Tyne (GSNSW)

 

FIELD TRIP – FRIDAY, 9 MARCH 2001 (8.00 AM – 3.00 PM)

 

The workshop will be followed by a one-day field trip on Friday, 9 March. The field trip will probably be in the vicinity of seismic line 97AGSEL2 to the east of Orange, and we will examine the geological units in this area that were crossed by the seismic lines. Seismic line 97AGSEL2 crossed the Mumbil Shelf, the Godolphin Fault and the western part of the Hill End Trough, and ran to the north of the Lewis Ponds deposit.


 

THE AGCRC–AGSO-GSNSW-FRACTAL GRAPHICS

 

EASTERN LACHLAN OROGEN WORKSHOP

 

7-9 MARCH 2001

Ex-Services’ Club, Orange, NSW

(One person per registration form)

 

(Title)  First Name:                                        Surname:                                                        

 

Position:                                                        Badge Name:                          ____    ______

 

Company/Institute:                                                                                                              

 

Address:                                                                                                                             

 

                                                                                                                                          

 

Telephone:                                                               Facsimile:                                            

 

E-mail:                                                                                                                                

 

Please register me for the Eastern Lachlan Workshop to be held in Orange, NSW.          .              

 

(Signature accepting registration)                                                              Date:                                    

 

Payment Details:

Registration for Workshop is $110 per person (includes GST). 

Registration for bonafide students wishing to attend is $55 (includes GST).

(Registration includes abstract volume, lunches and morning and afternoon teas)

Field Trip is an additional $49.50 (includes GST). This includes coach travel and lunch.

 

I wish to pay by:

 

    Cheque        (Chq Amount)      .     $                                                           (payable to AGSO)

 

    Bankcard / Mastercard / Visa / American Express   (please circle)

 

          (number)                                                                                                Expiry Date                  /      /      .

 

          (name on credit card)                                                                          

 

          (signature)                                                                                                  Amount              $                 .

 

Student Verification.

Head of Department to sign that above person is a bonafide student.

 

Signature                                                                                         Institute                                                                

 

                                                                                                                                                                                         

 

 

Please send this form to the workshop secretariat at the address below.

 

Eastern Lachlan Workshop Secretariat

C/- Russell Korsch, AGSO, PO Box 378, Canberra, ACT, 2601.

Ph: 02 6249 9495,    Fax: 02 6249 9971,    E-mail: Russell.Korsch@agso.gov.au