Stratigraphic Symbols

STRATIGRAPHIC NOMENCLATURE AND DESCRIPTION

STRATIGRAPHIC NOMENCLATURE AND DESCRIPTION T HE ROCKS OF THE UNITED STATES are classified for mapping purposes by a complex scheme of named material and temporal or geologic time terms. ... in that a chart usually shows an author's interpretation of rock units and 52 Symbols for map units.

www.nwrc.usgs.gov

Stratigraphic table showing correlation of rock unit map ...

Geochronologic units Age estimates of boundaries in years Map symbols of House & Pearthree (1993) and House (1994) Period Epoch AF ST AC QUA TERNAR Y Holocene Pleistocene Pliocene Miocene TER T IAR Y 800 Ka 1.0 Ma 2.0 Ma 2.5 Ma 5.0 Ma 8.0 Ma 500 Ka 250 Ka 125 Ka 50 Ka 10 Ka 20 Ka 5 Ka S S1 C2 ...

geopubs.wr.usgs.gov

G528 stratigraphic analysis lab.2005.p1

G528 stratigraphic analysis lab.2005.p1 528 ... There is not a universally accepted set of symbols, standards, or techniques for making stratigraphic sections.

www.umt.edu

NORTH AMERICAN STRATIGRAPHIC CODE

NORTH AMERICAN STRATIGRAPHIC CODE 1 North American Commission on Stratigraphic Nomenclature FOREWORD TO THEREVISED EDITION By design, the North American Stratigraphic Code is meant to bean evolving document, one that requires change as the field of earth science evolves.

ngmdb.usgs.gov

Stratigraphic Correlations and Sequence-Stratigraphic ...

Stratigraphic Datum The basal bed of the upper Farley ... Legend outlines lithologic symbols and color codes used for this figure and Figures 2.31-2.33.

ntl.bts.gov

37.1—Sedimentary-rock lithologic patterns

Microsoft Word - FGDCintro_final-final-final.doc. A-37-1 37.1—Sedimentary-rock lithologic patterns 37—LITHOLOGIC PATTERNS [Lithologic patterns are usually reserved for use on stratigraphic columns, sections, or charts] *For more information, see general guidelines on pages A-i to A-v. 601 ...

ngmdb.usgs.gov

Site-specific sequence-stratigraphic section benchmark charts ...

Legend: This contains conventional sequence-stratigraphic color codes and symbols (Figure 2). S 5 BENCHMARKC HARTS SUPPORT CHRONOSTRATIGRAP HIC ANALYSIS BETWEEN GROWTH-FAULTED SUBBASINS The Frioandsubjacent Vicksburg formations in the Corpus Christi Bay area ...

www.beg.utexas.edu

STRATIGRAPHIC COLUMNS FOR NORTHEAST ASIA GEODYNAMICS MAP

1 STRATIGRAPHIC COLUMNS FOR NORTHEAST ASIA GEODYNAMICS MAP Compiled by Leonid M. Parfenov 1, ... Also provided in the file entitled Column Explanation is the explanation of the symbols employed in the columns.

pubs.usgs.gov

BROOKIAN SEQUENCE STRATIGRAPHIC CORRELATIONS, UMIAT FIELD TO ...

PIR 2007-2 Brookian sequence stratigraphic correlations Page 1 BROOKIAN SEQUENCE STRATIGRAPHIC CORRELATIONS, UMIAT FIELD TO MILNE POINT FIELD, WEST-CENTRAL NORTH SLOPE, ... See the original reference for detailed explanation of abbreviations and symbols.

www.dggs.dnr.state.ak.us

The geologic history of Venus: A stratigraphic view

Venus stratigraphic units and global correlations (from Basilevsky and Head [1995a,b] with minor modifications): Psh ... Symbols on maps are as follows: Solid, ...

www.planetary.brown.edu

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