Characterize Framework for Igneous Activity at Yucca Mountain, Nevada

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Description

The purpose of this Analysis/Model (AMR) report is twofold. (1) The first is to present a conceptual framework of igneous activity in the Yucca Mountain region (YMR) consistent with the volcanic and tectonic history of this region and the assessment of this history by experts who participated in the Probabilistic Volcanic Hazard Analysis (PVHA) (CRWMS M&O 1996). Conceptual models presented in the PVHA are summarized and extended in areas in which new information has been presented. Alternative conceptual models are discussed as well as their impact on probability models. The relationship between volcanic source zones defined in the PVHA and ... continued below

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180 pages

Creation Information

Perry, F. & Youngs, B. November 6, 2000.

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Description

The purpose of this Analysis/Model (AMR) report is twofold. (1) The first is to present a conceptual framework of igneous activity in the Yucca Mountain region (YMR) consistent with the volcanic and tectonic history of this region and the assessment of this history by experts who participated in the Probabilistic Volcanic Hazard Analysis (PVHA) (CRWMS M&O 1996). Conceptual models presented in the PVHA are summarized and extended in areas in which new information has been presented. Alternative conceptual models are discussed as well as their impact on probability models. The relationship between volcanic source zones defined in the PVHA and structural features of the YMR are described based on discussions in the PVHA and studies presented since the PVHA. (2) The second purpose of the AMR is to present probability calculations based on PVHA outputs. Probability distributions are presented for the length and orientation of volcanic dikes within the repository footprint and for the number of eruptive centers located within the repository footprint (conditional on the dike intersecting the repository). The probability of intersection of a basaltic dike within the repository footprint was calculated in the AMR ''Characterize Framework for Igneous Activity at Yucca Mountain, Nevada'' (CRWMS M&O 2000g) based on the repository footprint known as the Enhanced Design Alternative [EDA II, Design B (CRWMS M&O 1999a; Wilkins and Heath 1999)]. Then, the ''Site Recommendation Design Baseline'' (CRWMS M&O 2000a) initiated a change in the repository design, which is described in the ''Site Recommendation Subsurface Layout'' (CRWMS M&O 2000b). Consequently, the probability of intersection of a basaltic dike within the repository footprint has also been calculated for the current repository footprint, which is called the 70,000 Metric Tons of Uranium (MTU) No-Backfill Layout (CRWMS M&O 2000b). The calculations for both footprints are presented in this AMR. In addition, the probability of an eruptive center(s) forming within the repository footprint is calculated and presented in this AMR for both repository footprint designs. This latter type of calculation was not included in the PVHA.

Physical Description

180 pages

Notes

INIS; OSTI as DE00837094

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  • Other Information: PBD: 6 Nov 2000

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  • Report No.: ANL-MGR-GS-000001, REV 00, ICN 01
  • Grant Number: NONE
  • DOI: 10.2172/837094 | External Link
  • Office of Scientific & Technical Information Report Number: 837094
  • Archival Resource Key: ark:/67531/metadc781309

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • November 6, 2000

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

Description Last Updated

  • March 30, 2016, 12:17 p.m.

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Perry, F. & Youngs, B. Characterize Framework for Igneous Activity at Yucca Mountain, Nevada, report, November 6, 2000; Las Vegas, Nevada. (digital.library.unt.edu/ark:/67531/metadc781309/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.