USGS Lithology Pattern.pdf

8/20/2019 USGS Lithology Pattern.pdf

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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.

601Gravel or

conglomerate

(1st option)

602Gravel or

conglomerate

(2nd option)

603Crossbedded gravel

or conglomerate

605Breccia (1st option)

606Breccia (2nd option)

607Massive sand or

sandstone

608Bedded sand or

sandstone

609Crossbedded sand

or sandstone

(1st option)

610Crossbedded sand

or sandstone

(2nd option)

611Ripple-bedded sand

or sandstone

612Argillaceous or

shaly sandstone

613Calcareous

sandstone

614Dolomitic

sandstone

616Silt, siltstone,

or shaly silt

617Calcareous

siltstone

618Dolomiticsiltstone

619Sandy or silty

shale

620Clay or clay

shale

621Cherty shale

622Dolomitic shale

623Calcareous shale

or marl

624Carbonaceous

shale

625Oil shale

626Chalk

627Limestone

628Clastic

limestone

629Fossiliferous clastic

limestone

630Nodular or irregularly

bedded limestone

631Limestone, irregular

(burrow?) fillings of

saccharoidal dolomite

632Crossbedded

limestone

633Cherty crossbedded

limestone

634Cherty and sandy

crossbedded

clastic limestone

635Oolitic

limestone

636Sandy limestone

637Silty limestone

638Argillaceous or

shaly limestone

639Cherty limestone

(1st option)

640Cherty limestone

(2nd option)

641Dolomitic limestone,

limy dolostone, orlimy dolomite

642Dolostone or

dolomite

643Crossbedded

dolostone ordolomite

644Oolitic dolostone

or dolomite


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A–37–2

37.1—Sedimentary-rock lithologic patterns (continued)

37—LITHOLOGIC PATTERNS (continued)



652Fossiliferous rock

653Diatomaceous

rock

654Subgraywacke

655Crossbedded

subgraywacke

656Ripple-bedded

subgraywacke

657Peat

658Coal

645Sandy dolostone

or dolomite

646Silty dolostone

or dolomite

647Argillaceous orshaly dolostone

or dolomite

648Cherty dolostone

or dolomite

649Bedded chert(1st option)

650Bedded chert(2nd option)

651Fossiliferous

bedded chert

659Bony coal or

impure coal

660Underclay

661Flint clay

662Bentonite

663Glauconite

664Limonite

665Siderite

666Phosphatic-nodular

rock

667Gypsum

668Salt

669Interbedded

sandstone and

siltstone

670Interbedded

sandstone and

shale

671Interbedded ripple-

bedded sandstone

and shale

672Interbedded shale

and silty limestone

(shale dominant)

680Interbedded

limestone andcalcareous shale

681Till or diamicton

(1st option)


(2nd option)


(3rd option)

684Loess (1st option)

685Loess (2nd option)

686Loess (3rd option)


and limestone

(shale dominant)

(1st option)


and limestone

(shale dominant)

(2nd option)

675Interbedded calc-areous shale and

limestone (shale

dominant)

676Interbedded

silty limestone

and shale

677Interbedded

limestone and

shale (1st option)

678Interbedded

limestone and

shale (2nd option)

679Interbedded

limestone and shale

(limestone dominant)


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A–37–3

37.2—Metamorphic-rock, igneous-rock, and vein-matter lithologic patterns

37—LITHOLOGIC PATTERNS (continued)



717Basaltic flows

718Granite (1st option)

719Granite (2nd option)

720Banded

igneous rock

721Igneous rock(1st option)

723Igneous rock

(3rd option)

724Igneous rock

(4th option)

725Igneous rock

(5th option)

726Igneous rock

(6th option)

727Igneous rock

(7th option)

728Igneous rock

(8th option)

722Igneous rock(2nd option)

711Tuffaceous rock

712Crystal tuff

713Devitrified

tuff

714Volcanic breccia

and tuff

715Volcanic breccia

or agglomerate

716Zeolitic rock

729Porphyritic rock

(1st option)

730Porphyritic rock

(2nd option)

731Vitrophyre

732Quartz

733Ore

707Schist and gneiss

708Gneiss

709Contorted gneiss

710Soapstone, talc,

or serpentinite

701Metamorphism

702Quartzite

703Slate

704Schistose or

gneissoid granite

705Schist

706Contorted schist

Documents

USGS Lithology Pattern.pdf