east riverina mapping project - overview

East RiverinaMapping Project -

Overview

Lorraine CampbellGeoscience Acquisition and Synthesis

Orange

Geological Survey Technical Talks1st June 2016, Orange


1/06/2016Geological Survey Technical Talks1st June 2016, Orange

East Riverina

• 5 year project (2014-18)• Multi-discipline approach

– 3D, structure, geochron, palaeo, P-T, research (U of Newcastle)

• Enhance geological data in an underexplored terrane– Higher resolution mapping– Crustal framework– Constrain geological timing

• Develop exploration models & mineral prospectivity– e.g. porphyry Cu-Au, orogenic Au,

magmatic Sn• Quarterly project updates



East RiverinaQua 1.8

Tert 65

Cret 144

Jur 206

Tri 248

Per 299

Carb 359

Dev

L

382

M

393

E

419

Sil

L

423

E

444

OrdL

458

M470

E485

Wagga Group

Ootha Group

Cocoparra Group

Shepparton Formation

Bendoc Group

Murray BasinK

anco

ona

Faul

t Zon

e

Gilm

ore

Faul

t Zon

e

Hervey Group

Gidginbung, Temora Vols

e.g. Barmedman

Booth’ra Gp

Benambran Orogeny

Tabberaberan Orogeny

Sn W

Au

Au Cu

Au?

S

S

II

e.g. YoungSe.g. Koetong

Ae.g.

Gurragong

e.g. Jindera e.g. Holbrook

Se.g.

Burrandana

Schematic only!

Gilmore FZ

Kancoona FZ



East Riverina

• Field mapping mostly completed for Ardlethan & Barmedman– Currently mapping around Wagga

Wagga, Temora, Narrandera & Henty• New lithological information

– Depositional environments, facies– Geochemistry, textures, mineralogy

• New age constraints– Field relationships– 37 x SHRIMP U-Pb zircon dates with

GA • 33 magmatic history • 4 sediment provenance

– Palaeontology and biostratigraphy• Bendoc Group recognised


East Riverina

Gilm

ore

Faul

t Zon

e

S-type

I-type

I-type

A-type

Sn?



East Riverina• New geophysical data and

interpretation– Improved resolution (magnetic, gravity,

radiometrics)– ASTER study (mapping, exploration)– Potential field models (mag, gravity)

• Structural studies– Kinematics, strain, timing

• Metamorphic studies– P-T & timing of heat / fluid transfer to

the upper crust• Crustal architecture using 3D

– Potential field & seismic modelling• Collaborative projects with Uni of

Newcastle Source: Venkataramani et al. 2016



Gilmore FZ

Kancoona FZ

ArdlethanProduced: >25 000 t

Sn Resource: 37.5 Mt @ 0.17% (66 500 t)

Sn (all)

West WyalongProduced: >13 t

Au

Mt AdrahProduced: >3 kg Au

Resource: 20.5 Mt @ 1.1 g/t Au (770 000

oz)

AdelongProduced: >20 t Au

(all) Resource: Challenger 0.93 Mt @ 2.74 g/t Au (82

000 oz)

Temora (PCD)Resource: 279 Mt

@ 0.3% Cu, 0.2 g/t Au(826 kt Cu, 2.065 Moz

Au)

Temora –Gidginbung (HS

epi)Production: >21t AuResource: 23.8 Mt

@ 0.1% Cu, 1.0 g/t Au (16 t Cu, 748 000 oz

Au)

Plus in northern Victoria …Sn (e.g. Pilot Range), Mo (e.g. Everton), Au (e.g. Beechworth)

BurrandanaProduced: >7 t W

Mt PaynterProduced: >3 t Sn

Resource: 0.228 Mt @ 0.35% Sn,

0.51% W(798 t Sn1163 t W)

Wagga – Om

eo

metam

orphic belt

East Riverina

• Mineral Systems work• Improved MetIndex data

– Location, style, etc.• HyLogger™

– New holes scanned & uploaded to AuScope

• Isotopic studies– Timing (Ar-Ar, U-Pb)– Nature of fluids (S, Pb)

• Tin prospectivity study (CET)

• Developing exploration models & prospectivity maps

east riverina mapping project - overview

Government & Nonprofit