SPECIAL NOTICE
B -- B--(U-Th)/He Analyses
- Notice Date
- 7/22/2022 8:45:47 AM
- Notice Type
- Special Notice
- NAICS
- 541380
— Testing Laboratories
- Contracting Office
- OFFICE OF ACQUISITON GRANTS SACRAMENTO CA 95819 USA
- ZIP Code
- 95819
- Solicitation Number
- 140G0322Q0196
- Response Due
- 7/26/2022 2:00:00 PM
- Archive Date
- 09/30/2022
- Point of Contact
- Deng, Yangzhi, Phone: 916-278-9326
- E-Mail Address
-
yangzhideng@usgs.gov
(yangzhideng@usgs.gov)
- Description
- (U-Th)/He Analyses Notice of Intent This is a notice of intent to solicit from a single source. The U.S. Geological Survey (USGS), intends to award a purchase order to University of Texas Laboratory for (U-Th)/He Analyses of zircon and apatite. Award will be made in accordance with Federal Acquisition Regulation (FAR) 13.106-1(b) and the procedures at FAR Part 12 entitled, Acquisition of Commercial Items and FAR Part 13 entitled, Simplified Acquisition Procedures. University of Texas Laboratory is, to the USGS knowledge, the only source that has access to and expertise in the three different facilities required for (U-Th)/He Analyses: a quadropole mass spectrometer (QMS) with a laser heating cell for Helium extraction and measurement; a clean lab for grain digestion in nitric acid or hot hydrofluoric acid; and an inductivity coupled plasma mass spectrometry (ICPMS) for Uranium, Thorium, and Samarium measurements. The USGS has used the University of Texas lab for the past several years and would like to continue this collaboration so that future results are directly comparable to previous analyses. The purpose of this notice is to satisfy the requirements of FAR Subpart 5.101(a)(2) and FAR 5.2. This notice of intent is not a request for competitive quotes. However, all responsible parties may submit a quotation by the closing date of this announcement which shall be considered by the agency. No solicitation will be issued. A determination not to compete this action based upon responses received is in the sole discretion of the Government. The NAICS code for this action is 541380, Testing Laboratory. Responses or inquiries shall only be accepted through electronic mail addressed to yangzhideng@usgs.gov and must be uploaded and received in their entirety no later than July 26, 2022 at 1700 ET. Responses submitted by hardcopy or any web portal shall not be accepted or considered. Statement of Work 1.0 INTRODUCTION The USGS needs to acquire (U-Th)/He thermochronometry analyses of apatite (34) and zircon (34) grains from rock samples. 2.0 BACKGROUND The USGS conducts research on regional geology related to energy, minerals, and hazards. This involves making geologic maps of the area being investigated, and reconstructing the tectonic, exhumation, and erosion history. (U-Th)/He thermochronometry is a key laboratory technique for determining exhumation histories, in particular rock cooling through 40-80�C (apatite U-Th/He) and 150-200�C (zircon U-Th/He). The samples submitted for thermochronometry analyses will help us elucidate the geologic context of mineral resources in Alaska. 3.0 SCOPE (U-Th)/He thermochronometry requires access to and expertise in the use of a quadropole mass spectrometer (QMS) with a laser heating cell for Helium extraction and measurement, a clean lab for grain digestion with nitric acid or hot hydrofluoric acid, and an inductivity coupled plasma mass spectrometry (ICPMS) for Uranium, Thorium, and Samarium measurements. The exhumation age of each analyzed apatite or zircon grain is calculated from the analytical data, which come in Excel Spreadsheet format. 4.0 APPLICABLE DOCUMENTS Publications documenting state-of-the-art analytical methods for collection and interpretation of AHe and ZHe data. Farley, K.A. and Stockli, D.F., 2002, (U-Th)/He Dating of Phosphates: Apatite, Monazite, and Xenotime. In: Kohn, M., Rakovan, J., and Hughes, J.M. (eds.), Phosphates. Reviews in Mineralogy and Geochemistry, v. 15, p. 559-578. Flowers, R. M., Ketcham, R. A., Shuster, D. L., & Farley, K. A. (2009). Apatite (U�Th)/He thermochronometry using a radiation damage accumulation and annealing model. Geochimica et Cosmochimica Acta, 73(8), 2347-2365. Guenthner, W. R., Reiners, P. W., Ketcham, R. A., Nasdala, L., & Giester, G. (2013). Helium diffusion in natural zircon: Radiation damage, anisotropy, and the interpretation of zircon (U-Th)/He thermochronology. American Journal of Science, 313(3), 145-198. Reiners, P. W. (2005). Zircon (U-Th)/He thermochronometry. Reviews in Mineralogy and Geochemistry, 58(1), 151-179. 5.0 TECHNICAL REQUIREMENTS The contractor shall have experience in all aspects of (U-Th)/He thermochronometry using laser extraction and QMS, clean lab, and ICPMS methods. 6.0 DELIVERABLES The contractor shall provide deliverables in a report in Excel spreadsheet format, with both the raw and interpreted data included. The report shall include analysis of standards and a write-up of analytical methods shall be available (in digital form, as a Word document to USGS on request. 7.0 PERIOD OF PERFORMANCE Award to September 30, 2023
- Web Link
-
SAM.gov Permalink
(https://sam.gov/opp/b43d2b299a6e4fdbb187e4a289baabdd/view)
- Record
- SN06398729-F 20220724/220722230110 (samdaily.us)
- Source
-
SAM.gov Link to This Notice
(may not be valid after Archive Date)
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