Categories of Information That Go in Each of the Lithology Tables

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Categories of Information That Go in Each of the Lithology Tables

Oregon Geologic Digital Compilation Keywords for lithology table(s) data entry—revised 2/1/05, 1/1/06 Lithology mineral and composition table Alteration, to (mineral) includes weathering Blebs, composition Blocks, composition Cavity fill, composition Cavity lining, composition Cementation, composition Clasts, composition Clots, composition Concretions, composition Debris, composition Encrustation, composition Enrichment, composition Facies, composition Fiamme, composition Fossiliferous (general fossil types, not individual genus and species) Fracture fill, composition Fragments composition Grains, composition Impurities, composition Inclusions, composition Joint fill, composition Knobs, composition Lapilli, composition Layering, composition Luster, composition Matrix, composition Mineralogy (list of main minerals or lithologies) Mineralization (list of commodity minerals) Nodules, composition Oxidation, composition Particles, composition Partings, composition Patches, composition Phenocrysts, composition Purity, amount of or type Recrystallization, mineral Schlieren, composition Seams, composition of mineral fill Shards, composition Soil, composition Staining, composition Stringers, composition of mineral fill Veins (or veinlets), compositon of mineral/lithology fill Vesicle fill, composition Xenoliths, composition Zones, composition Lithology color table Fresh Weathered Staining (color only) Lithology major structures table—amounts of outcrop level characteristics (keyword is followed by a describing adjective or, if no adjective, is used by itself) Alignment, (includes orientation) Banding Body shape (includes body form) Body size Brecciation Cleavage Contacts (does not include conformability or lack of conformability) Deformation=contortion Flow shape (includes flow form) Flow size Flow type Folding Foliation Fracturing Grading Imbrication Interbanding Interbedding Intercalation Interfingering Interlayering Intermixing Interstratification Jointing Layering Lineation Mantling Metamorphism Mylonitization Outcrop distribution Outcrop form (includes outcrop shape) Outcrop size Partings Pillowing Pluton size Recrystallization (amount of, not mineralogy) Schistocity Sedimentary structures (use with any type of sedimentary structure) Shearing Slickensides Soil development Surfaces Vesicularity Weathering (amount of, not mineral type) Welding Lithology texture table—amounts of hand sample level characteristics (keyword is followed by a describing adjective or is used by itself if no adjective) Alteration (amount, not mineral altered to) Banding Cementation Compaction Consolidation Crystal size—includes porphyritic, aphyric, and phyric, also glassy, dense Devitrification Eutaxitic Fiamme Flowbanding Flow breccia Grain size (sediments and sedimentary rocks only) Hardness Induration Kaolinization Lithification Lithophysae Luster Porosity Recrystallization Reworking Rounding Silicification Sorting Spherulitic .

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Lithologic Description of a Sediment Core from Round
U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY LITHOLOGIC DESCRIPTION OF A SEDIMENT CORE FROM ROUND LAKE, KLAMATH COUNTY, OREGON David P. Adam1 Hugh J. Rieck2 Mary McGann1 Karen Schiller1 Andrei M. Sarna-Wojcicki1 U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 95-33 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 'Menlo Park, CA 94025 2Flagstaff, AZ 86001 Introduction As part of a series of investigations designed to study the Quaternary climatic histories of the western U.S. and the adjacent northeastern Pacific Ocean, a sediment core was collected from Round Lake, Klamath County, Oregon, in the fall of 1991. This report presents basic data concerning the Round Lake site, as well as lithologic descriptions of the recovered sediments. The drilling methods and core sampling and curation techniques used are described by Adam (1993). Acknowledgement Coring at Round Lake was made possible by the gracious cooperation of Mr. Les Northcutt, the owner of the property. Site description Round Lake is a broad open valley about 2.5 km wide and 5 km long that lies just west of the southern end of Upper Klamath Lake, Oregon (Figure 1), at an elevation of about 1300 meters. The basin is one of a series of northwest-southeast trending basins that also includes the Klamath graben and Long Lake. Regional bedrock consists of basalt and basaltic andesites of Pliocene and upper Miocene age (Walker and McLeod, 1991; Sherrod and Pickthorn, 1992).
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