The origin and history of alteration and carbonatization of the Yucca Mountain ignimbrites. Volume I | Zendy

Jan Szymański | Zendy

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The origin and history of alteration and carbonatization of the Yucca Mountain ignimbrites. Volume I

Author(s) -

Jan Szymański

Publication year - 1992

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/245579

Subject(s) - geology , volcanism , mafic , breccia , geochemistry , bedrock , crust , hydrothermal circulation , magma , earth science , geomorphology , tectonics , volcano , paleontology

This document contains Volume I of the report entitled The Origin and History of Alteration and Carbonatization of the Yucca Mountain Ignimbrites by Jerry S. Szymanski and a related correspondence with comments by Donald E. Livingston. In the Great Basin, the flow of terrestrial heat through the crust is affected in part by the flow of fluids. At Yucca Mountain, the role of fluids in crustal heat transport is manifested at the surface by youthful calcretes, sinters, bedrock veins, hydrothermal eruption breccias and hydrothermal alteration. This report discusses evidence for recent metasomatism high in the stratigraphic section at Yucca Mountain. Over the last several hundred years, episodes of calcite emplacement contemporaneous with local mafic volcanism have occurred at intervals that are not long in comparison with the isolation time required for a High-Level Radioactive Waste repository

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