B--Sources Sought - Geochronology

The U.S. Geological Survey is conducting market research through a Sources Sought announcement to identify qualified businesses capable of providing specialized geochronology services for volcanic ash samples from the North Slope of Alaska, targeting zircons aged between 130 and 90 million years. The work requires mineral separation of zircon from seven bulk tephra samples, followed by geochronologic screening using laser-ablation inductively-coupled plasma mass spectrometry and high-precision chemical-abrasion isotope-dilution thermal-ionization mass spectrometry analysis. Deliverables must include detailed data tables, concordia diagrams, weighted mean age plots, and comprehensive technical reports that document analytical protocols, measured isotope ratios with associated uncertainties, preferred ages, paired analyses on reference materials, and geological interpretation. The analyst performing the work must hold a PhD in geology, geochemistry, or a closely related field with proven expertise in CA-ID-TIMS and U-Pb zircon geochronology. Responses must be submitted as capabilities statements via email to [email hidden] no later than June 26, 2026, at 5:00pm EST, with the announcement explicitly stating that it is not a request for proposals or quotations and that no contract award is guaranteed. The North American Industry Classification System code 541380 applies, with a size standard of $19 million in annual revenue, and the performance location is the contractor’s laboratory with an estimated 180-day period of performance beginning in July 2026, though the exact timeline remains undetermined. No costs incurred in preparing responses will be reimbursed, and the Government will not pay for any services unless a subsequent contract or purchase order is formally awarded based on further solicitation.