Barton Gold Holdings Limited · ASX:BGD
Barton Gold — South Australian Exploration & Mining Conference 2023
28 slides from Barton Gold's conference presentation, Dec 1, 2023
Slide 1: Tarcoola 2D Seismic Insights
ASX:BGD FRA:BGD3 OTCQB:BGDFF Tarcoola 2D Seismic Insights 1 December 2023 | South Australian Exploration & Mining Conference Perseverance Mine, Tarcoola Project
Slide 2: Important Notices
Important Notices Disclaimer This document has been approved by the Board of Barton Gold Holdings Limited (ACN 633 442 618) (together with its affiliates, “Barton” or the “Company”) and has been prepared for the exclusive use of the party to whom Barton delivers this document (the “Recipient”). The
Slide 3: Acknowledgements
Acknowledgements ▪ HiSeis. Alastair Tait: interpretation – this presentation Greg Turner, Manlio Castillo, Jai Kinkela ▪ Merlin Geophysics Tom Harris – survey design, acquisition, processing, consultation and oversight. ▪ Department For Energy and Mining ADI financial assistance.
Slide 4: Key Findings
Key Findings REGIONAL FOLDING: Folding from NS to NNW-SSE shortening formed a southern syncline and an asymmetric parasitic fold to the north. Consecutive shortening created a thrust duplex on the southern dipping limbs. STRUCTUAL TIMING RELATIONSHIPS: Multiple generations of Structures can be found
Slide 5: Key Findings
Key Findings Significance to gold mineralisation:1 • Perseverance shear imaged on Line 1. It is a deep sub- vertical fault. There are several similar parallel structures observed in the seismic. • Three of these lie under known gold occurrences but others untested. • Gold soil anomalies also share s
Slide 6: Regional Setting
Tarcoola Regional Setting ▪ Wilgena Domain. Archean Mulgathing Complex St Peter Suite Tarcoola Formation Hiltaba /GRV Minos / Ariadne ▪ Regional Scale Shear zones Define southern boundary of domain. Hosts significant gold mineralisation at Tunkillia, Barton Gold tenements, GSSA Solid Geology Minos-A
Slide 7: Local Geology
Tarcoola Local Geology Paxton Granite ▪ Oldest unit in the Tarcoola mine area. ▪ 1722 - 1715 Ma monzogranite, quartz monzonite, and syenogranite1. Paxton Granite. Peela Conglomerate Tarcoola Formation ▪ Overlies Paxton Granite ▪ 1657 Ma ▪ Dips ESE at 35-55º Perseverance pit, NE view 1 Budd, 2006
Slide 8: Geology
Tarcoola Geology Gold Mineralisation Two of the key structures for localisation of Wondergraph gold at Perseverance are: pit Granite Perseverance Shear1 Granite Vein2 North and south of the pit the location of these structures is uncertain. Perseverance Do they continue? West Tarcoola What is their
Slide 9: The Case for Seismic Surveying
Tarcoola Seismic The Case for Seismic Surveying Advantages of seismic: • Can image the Tarcoola Formation sediments where magnetics and gravity do not respond. • Images to greater depths without a loss in resolution, unlike potential field and electrical methods. If it works.. • Tarcoola Formation b
Slide 10: Barton 13GA-EG1 Reprocessing
Tarcoola Seismic Barton 13GA-EG1 Reprocessing • Interpretation1 highlighted major structural zones associated with projection of Perseverance Shear and other regional structures. • Granite bodies beneath and tapping major structures. • Coincident with some previously identified targets from surface
Slide 11: Survey Layout
Tarcoola Seismic Survey Layout • 5 lines of 2D seismic across the mine area Line 5 Line 4 Line 3 Line 2 Line 1 and to western tenement area. • Line spacing 2 – 4 km. • 40 line km in total. • Infrastructure and heritage restrictions in the mine area. • No line clearing on Line 1 south of the rail lin
Slide 12: Acquisition
Tarcoola Seismic Acquisition ▪ Vibroseis source controlled and monitored from recorder truck at camp. HiSeis ▪ All geophones live once Recorder Truck deployed – nodal system. ▪ Surveying paused for passing trains. 1 Refer to ASX announcement dated 14 August 2023
Slide 13: Acquisition
Tarcoola Seismic Acquisition Vibroseis truck Line 01 Survey Details Weight drop source, southern end Line 1 Traffic control
Slide 14: Processing
Tarcoola Seismic Processing ▪ HiSeis data processing of all 5 lines. ▪ Velocity modelling. ▪ PreSTM stacks ▪ PreSDM stacks
Slide 15: Tomography
Tarcoola Seismic Tomography Tomography – Line 1.
Slide 16: Migrated Sections
Tarcoola Seismic Migrated Sections ▪ PSDM Sections. ▪ Regional GA line 13GA- EG. ▪ Major structures and contacts from magnetics. Granite contact Tarcoola Formation 1 Refer to Prospectus dated 14 May 2021 and ASX announcement dated 14 August 2023 PSDM sections looking ENE
Slide 17: Line 1
Tarcoola Seismic Line 1 ▪ Crosses the main Tarcoola fold structure Line 1 ▪ Immediately north of Perseverance pit ▪ Over the main ridge adjacent to Tarcoola Blocks mine. ▪ Further 3.8 km south of rail line, with a gap within the rail corridor. Rail Line Wondergraph Perseverance Open Pit Tarcoola Blo
Slide 18: Line 1
Tarcoola Seismic Line 1 Fabian Quartzite Peela Conglomerate Fabian Train Track Granite Quartzite Granite 0 km ▪ Early SSE-NNW shortening. S Line 1 PSDM N ▪ Folding and reverse faulting and thrust 1 km ramping of south-dipping limbs of Tarcoola Formation. 2 km ▪ Basal Thrust and granite contact not w
Slide 19: Line 1
Tarcoola Seismic Line 1 Fabian Quartzite Peela Conglomerate Fabian Train Track Granite Quartzite Granite 0 km ▪ Thrust structures S N overprinted by NE trending, NW dipping Similar Deep Vertical Feature? faults. 1 km ▪ Perseverance Fault seen Perseverance Shear in Line 1 – overprinted by these but a
Slide 20: Line 1
Tarcoola Seismic Line 1 Fabian Quartzite Peela Conglomerate Fabian Train Track Granite Quartzite Granite 0 km S N ▪ NE to NNE trending Similar Deep Similar Deep faults (e.g. Basement Vertical Feature? Vertical Feature? 1 km Fault) and NW faults overprint shallow NE Perseverance Shear trending faults
Slide 21: Structural Framework
Tarcoola Seismic Structural Framework ▪ Good match of major structures visible in magnetics with interpreted fault traces from seismic interpretation. ▪ Major structural intersections associated with best geochemical anomalies. ▪ Gold is in the hangingwall of NE trending (NW dipping) structural zone
Slide 22: Conclusions
Tarcoola Conclusions1 ▪ Seismic has imaged the Tarcoola Formation and revealed relative structural / fault timing. Main reflectors showing thrust-stacking of Fabian Quartzite. ▪ Best Perseverance mineralisation is at the intersection of the Perseverance shear with NE and NW trending faults and dykes
Slide 23: Contact
Contact Barton Gold Level 4, 12 Gilles Street Adelaide SA 5000 contact@bartongold.com.au www.bartongold.com.au Alexander Scanlon Managing Director & CEO a.scanlon@bartongold.com.au +61 425 226 649 Shannon Coates Company Secretary cosec@bartongold.com.au +61 8 9322 1587
Slide 24: Competent Persons Statements
Competent Persons Statements The information relating to Exploration Results and Mineral Resources in this presentation is extracted from the Company’s Prospectus dated 14 May 2021 (Prospectus) and Barton ASX announcements as cross-referenced in the body of this presentation. A copy of the Prospectu
Slide 25: Geology
Tarcoola Geology Structural Evolution and Significant Deformation events1,2 Three main deformation events define the Tarcoola area: D1 – NNW – SSE directed shortening that resulted in open, broad scale folding. D2 – Regional shortening (NNW-SSE), Trans tensional (Riedel) sub-vertical, NW and NNE tre
Slide 26: Line 4
Tarcoola Seismic Line 4 ▪ Western extension of Tarcoola Line 5 Line 4 Line 3 Line 2 Line 1 basin. ▪ Designed to test over Tolmer prospect area – major structures interpreted from aeromagnetics. 0 2 km GSSA 100K Geology & GCAS Area 9A magnetic shade
Slide 27: Line 4
Tarcoola Seismic Line 4 Rail Line Gold Soil Anomaly Granite ▪ Single reflector package. ▪ Same thrust ramping as Line 1. ▪ Granite on northern end of line shallow, with faulted contact overlying concealed Tarcoola Formation. ▪ Calcrete soil anomaly at Tolmer Prospect located over zone of vertical fa
Slide 28: Tarcoola Seismic
Tarcoola Seismic Gold Soil Gold Soil Anomaly Anomaly Perseverance Pit Granite ▪ Other possible deep-tapping, sub-vertical structures that look similar to the Perseverance Shear. ▪ These may link with vertical structures seen in the Barton seismic lines. Regional seismic line 13GA-EG1 1 Refer to Pros
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