Criteria for the recognition of pedogenic/supergene and nonpedogenic/hypogene deposits and their relationship to the origin of calcite/opal deposits at Yucca Mountain. Special report No. 14 Page: 2 of 42
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CRITERIA FOR THE RECOGNITION OF PEDOGENIC/SUPERGENE AND
NONPEDOGENIC/HYPOGENE DEPOSITS AND THEIR RELATIONSHIP TO THE
ORIGIN OF CALCITE/OPAL DEPOSITS AT YUCCA MOUNTAIN
CONTENTS
INTRODUCTION 1
PEDOGENIC/SUPERGENE CRITERIA 1
Petrocalcic Horizons 1
Extent of Petrocalcic Horizons 3
Soil Matrix/Clastic Content 4
Laminated/Banded Texture 6
Nodular/Glaebular/Pisolitic Texture 9
Vesicular Texture 10
Pebble/Clast Rinds and Coatings 11
Rhizoliths/Root Casts 12
Bioturbation/Microorganisms 13
Solution Features 14
Sparry Calcite in Voids/Vugs 14
Veins 15
Composition of Calcretes 16
NONPEDOGENIC/HYPOGENE CRITERIA 17
Fault Zones 18
Vein Geometry 19
Groundwater Springs 20
Trace Element Enrichment 21
Episodes of Deposition 22DISCUSSION
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Hill, C.A.; Schluter, C.M. & Monger, H.C. Criteria for the recognition of pedogenic/supergene and nonpedogenic/hypogene deposits and their relationship to the origin of calcite/opal deposits at Yucca Mountain. Special report No. 14, report, October 1, 1993; United States. (https://digital.library.unt.edu/ark:/67531/metadc669138/m1/2/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.