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Deep Crustal Seismic Transect –Ministry of Natural Resources

Deep Crustal Seismic Transect –Ministry of Natural Resources. “Think big.”. -Jim Wright. Verkhoyansk-Kolyma – Magmatism Groups. Multidisciplinary Continental Dynamics Project : Structural Evolution and Continental Growth of Northeast Asia TRACT (TPAKT)

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Deep Crustal Seismic Transect –Ministry of Natural Resources

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  1. Deep Crustal Seismic Transect –Ministry of Natural Resources

  2. “Think big.” -Jim Wright

  3. Verkhoyansk-Kolyma – Magmatism Groups Multidisciplinary Continental Dynamics Project: Structural Evolution and Continental Growth of Northeast Asia TRACT (TPAKT) Trans Russian Arctic Crustal Transect

  4. Opportunity • TRACT: • Unique opportunity to link geology with newly acquired geophysical data in NE Russia • Future Scientific Drill Holes

  5. Deep Crustal Seismic Transect –Ministry of Natural Resources ? 2005 ? 2003-04

  6. Scientific Rationale • Continental Accretionary Orogens • Continental assembly via microcontinent and arc accretion • Accretion without ophiolites? • Orogenic Loops • Evolution of Magmatism in Collisional and Accretionary Orogens Topical • Understand the origin of the Arctic Ocean-South Anyui • Understand modern plate boundaries: Okhotsk? Plate • Paleogeographic reconstructions

  7. Societal Impact • Economic geology and magmatism • Tectonic setting of one of the world’s major gold, silver and other metals provinces • Support of International collaboration • Graduate students-cross-pollenization • Technology transfer • Scientific Databases • Seismic Hazards

  8. Approaches to the Science Existing Data • Quality Geological maps exist at 1:200,000, 1:50,000 • Reflection Seismic, Gravity and Magnetics (2DV) • Earthquake seismicity • Trace and major element dataset

  9. Approaches to the Science New Investigations • Detailed structural analysis • Parallel transects using the major rivers and roads • Geochronology (U-Pb SHRIMP, 40Ar/39Ar) • Thermochronology (FT, U-Th/He) • Use of detrital zircons for paleogeographic reconstructions • Petrology (Thermobarometry) • Geochemistry (Isotopes MC ICPMS, for Hf, Sr and Nd) • Boreholes 3 holes, 3 km deep, along line • Heat flow, velocity, geophysical techniques • Local microseismicity networks • INSAR • New Paleomagnetic approaches • GIS database implementation

  10. Deep Crustal Seismic Transect –Ministry of Natural Resources Chukotka Ulakhan Flt PriKo Oloy Omolon OCVB

  11. Transect Segments 1) Okhotsk-Chukotsk/Murgal arc systems 2) Main plutonic belt 3) Ulakhan fault (Fujita, Hindle)

  12. Deep Crustal Seismic Transect –Ministry of Natural Resources Chukotka Ulakhan Flt PriKo Oloy Omolon OCVB

  13. Transect Segments 4) Omsukchan trough 5) Viliga turbidites 6) Omolon craton (Prikolyma related)

  14. Deep Crustal Seismic Transect –Ministry of Natural Resources Chukotka Ulakhan Flt PriKo Oloy Omolon OCVB

  15. Transect Segments 7) Oloy arc 8) South Anyui suture zone 9) Chukotka block 10) Wrangel island and offshore Arctic Ocean

  16. Jaime Toro Jeff Amato Dave Stone Jim Sears Andrei Prokopiev Pavel Minyuk Vladimir Oxman Paul Layer Sam Mukasa Nikolai Goryachev Elizabeth Miller Vyacheslav Akinin Sergei Voroschin Marina Luchitskaya Jim Wright Warren Nokleberg Kazuya Fujita David Hindle Participants

  17. Continental Dynamics • Continental Dynamics deadlines • April 1, preproposal • November 15, proposal

  18. How do we get there? • Need to identify US participants/institutions • Need to form management structure (PIs) • Need to identify Russian participants and collaborations. Russian management team (PI) • Need to obtain funding for Russian participants (through Russian sources)

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