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Lithology symbol library

Vector geological symbols extracted from the published USGS/FGDC lithology chart. Source codes distinguish the official artwork from supplementary field-record symbols. White backgrounds and physical line weights keep these symbols clear in monochrome reports.

Clay lithology symbol

Clay

USGS/FGDC 620

Silt lithology symbol

Silt

USGS/FGDC 616

Sand lithology symbol

Sand

USGS/FGDC 607

Gravel lithology symbol

Gravel

USGS/FGDC 601

Peat lithology symbol

Peat

USGS/FGDC 657

Sandstone lithology symbol

Sandstone

USGS/FGDC 607

Siltstone lithology symbol

Siltstone

USGS/FGDC 616

Mudstone lithology symbol

Mudstone

USGS/FGDC 620

Shale lithology symbol

Shale

USGS/FGDC 620

Limestone lithology symbol

Limestone

USGS/FGDC 627

Dolostone lithology symbol

Dolostone

USGS/FGDC 642

Conglomerate lithology symbol

Conglomerate

USGS/FGDC 602

Breccia lithology symbol

Breccia

USGS/FGDC 605

Chert lithology symbol

Chert

USGS/FGDC 649

Coal lithology symbol

Coal

USGS/FGDC 658

Granite lithology symbol

Granite

USGS/FGDC 718

Gneiss lithology symbol

Gneiss

USGS/FGDC 708

Schist lithology symbol

Schist

USGS/FGDC 705

Quartzite lithology symbol

Quartzite

USGS/FGDC 702

Basalt lithology symbol

Basalt

USGS/FGDC 717

Slate lithology symbol

Slate

USGS/FGDC 703

Tuff lithology symbol

Tuff

USGS/FGDC 711

Volcanic breccia lithology symbol

Volcanic breccia

USGS/FGDC 714

Vein quartz lithology symbol

Vein quartz

USGS/FGDC 732

Topsoil / organic soil lithology symbol

Topsoil / organic soil

GeoResolve field-record symbol

Laterite / murram lithology symbol

Laterite / murram

GeoResolve field-record symbol

Fill / made ground lithology symbol

Fill / made ground

GeoResolve field-record symbol

Weathered rock (unspecified) lithology symbol

Weathered rock (unspecified)

GeoResolve field-record symbol

No recovery / core loss lithology symbol

No recovery / core loss

GeoResolve field-record symbol