04 uec iaea

530 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
530
On SlideShare
0
From Embeds
0
Number of Embeds
83
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • North is up in the first frame
  • 04 uec iaea

    1. 1. Preliminary uranium exploration results, Paraná Basin, ParaguayClyde L. Yancey UEC, Albuquerque, NM, USABernard Schmeling Consulting Geophysicist, Remagen, GermanyVictor Fernandez Crosa UEC, Asunción, ParaguayAmber Whittaker UEC, Albuquerque, NM, USAChelsea Brunner UEC, Albuquerque, NM, USA
    2. 2. Outline• Geologic Setting• Historic and Current Exploration – Coronel Oviedo – Yuty• Paragenesis• Conclusions
    3. 3. Geologic Setting: Tectonic Regions of South America After Milani and Thomaz-Filho, 2000, and Baretto, 1985
    4. 4. Geologic Setting: Eastern Paraguay After Baretto, 1985, and Dahlkamp, 2010
    5. 5. Geologic Setting: Eastern Paraguay After Baretto, 1985, and Dahlkamp, 2010
    6. 6. Geologic Setting: Eastern Paraguay After Baretto, 1985, and Dahlkamp, 2010
    7. 7. Geologic Setting: Eastern Paraguay After Baretto, 1985, and Dahlkamp, 2010
    8. 8. Geologic Setting: Stratigraphic Section• Alto Paraná Fm – Alkaline intrusives• San Miguel Fm – Deltaic, fluvial, etc. sandstones (U host)• Coronel Oviedo Fm – Glacial, fluvial, and marine sediments After Baretto, 1985, and Fulfaro, 1996
    9. 9. Geologic Setting: Coronel Oviedo Concession
    10. 10. Geologic Setting: Yuty Concession
    11. 11. Historic Exploration: Anschutz Corporation• 1976 – 1983 joint venture with:  Korea Electro Power Company (KEPCO)  Taiwan Power Company (TPC)• 162,000 km2 – all eastern Paraguay• Airborne radiometric and magnetic surveys• San Miguel Formation  Massive Sand Unit  Fine-grained Sand Unit  Wavy Unit
    12. 12. Historic Exploration: Coronel Oviedo
    13. 13. Historic Exploration: Yuty
    14. 14. Historic Exploration:Coronel Oviedo Redox Front
    15. 15. Historic Exploration: Enigmatic Structure
    16. 16. Current Exploration: Oviedo Carborne Survey SouthData from Schmeling and Paredes Rolon, 2011
    17. 17. Current Exploration: Oviedo Carborne Survey SouthData from Schmeling and Paredes Rolon, 2011
    18. 18. Current Exploration: Oviedo Carborne Survey SouthData from Schmeling and Paredes Rolon, 2011
    19. 19. Current Exploration:Remote Sensing Study
    20. 20. Current Exploration: Remote Sensing StudyData from Murphy Geological Services, 2011
    21. 21. Current Exploration:Remote Sensing Study
    22. 22. Current Exploration:Remote Sensing Study Data from Murphy Geological Services, 2012
    23. 23. Current Exploration: Coronel OviedoTres Corrales pumping test Mineralized zone confined and saturated + 48 gallons/minute yield = ISR amenability Similar to S. Texas and Wyoming
    24. 24. Current Exploration:San Antonio Block Model
    25. 25. Paragenesis• Roll front• South Texas Coastal Plain style of uranium mineralization• Environment: coastal plain coalescing paleochannels• Uranium sources:  Continued leaching of underlying sediments  Overlying K alkaline intrusives• Reductants: organic material in sands, hydrocarbon-related gases South Texas coastal plain NAIP imagery 2010
    26. 26. Summary and Conclusions• Paraná Basin hosts mineralized strata – Brazil: Rio Bonito – Paraguay: San Miguel• Extensive historic database• Current exploration results – Mineralization concentrated along faults ~60mm – ISR amenable deposits• Possible re-reduction masking
    27. 27. 1970s photo ofItararé Fm/Coronel Oviedo Fm

    ×