This document is a representation of the legend that accompanied the

original 1974 King and Beikman Geology of the United States. It is in

plain text and there are no colors or patterns in the unit boxes.

LEGEND

STRATIFIED SEQUENCE EUGEOSYNCLINAL PLUTONIC AND METAMORPHIC

(Mainly marine) CONTINENTAL DEPOSITS DEPOSITS VOLCANIC ROCKS INTRUSIVE ROCKS ROCKS

+------------------------------------------------------------+ +-----------------------+ +---------------------------------------+ +---------------------------------------+ +----------------------------------+ +------------------+

¦ ¦ ¦ ¦ ¦

Most complete Combinations

+ sequences ¦ ¦ ¦ ¦ ¦

¦ + +

¦ ¦ +------+ ¦ Atlantic ¦ ¦ ¦ ¦ ¦

¦ ¦ ¦ Qh ¦ ¦ and

¦ ¦ +------+ ¦ Gulf ¦ ¦ ¦ ¦ ¦

¦ ¦ HOLOCENE ¦ Coastal

¦ ¦ ¦ Plains ¦ ¦ ¦ ¦ ¦

¦ ¦ +------+ ¦ and +

¦ ¦ ¦ Qp ¦ ¦ part +------+ ¦ ¦ ¦ ¦ +-------------+ ¦ ¦

¦ ¦ +------+ ¦ of ¦ Q ¦ ¦ ¦ Qv ¦ Qf ¦

¦ ¦ PLEISTOCENE ¦ Great +------+ ¦ ¦ ¦ ¦ +-------------+ ¦ ¦

¦ Q ¦ Glacial deposits ¦ Plains. QUATERNARY ¦ Western QUATERNARY

¦ U ¦ not included, ¦ Only large ¦ United ¦ ¦ ¦ VOLCANIC ROCKS ¦ ¦

¦ A ¦ see below. + areas and ¦ States. Qf, Felsic volcanic

¦ T ¦ thick ¦ ¦ ¦ ¦ rocks. ¦ ¦

¦ E ¦ +------+ + deposits ¦

¦ R ¦ ¦ ¦ ¦ shown. ¦ ¦ ¦ ¦ ¦ ¦

¦ N ¦ +------+ ¦ +

¦ A ¦ LIMITS OF ¦ ¦ ¦ ¦ ¦ ¦

¦ R ¦ PLEISTOCENE ¦

¦ Y ¦ GLACIAL DEPOSITS ¦ Northern ¦ ¦ ¦ ¦ ¦

¦ ¦ Solid line, ¦ interior

¦ ¦ Wisconsin gla- ¦ region, ¦ ¦ ¦ ¦ ¦

¦ ¦ ciations; broken ¦ Pennsylvania

¦ ¦ line, older ¦ to ¦ ¦ ¦ ¦ ¦

¦ ¦ glaciations. ¦ Montana.

¦ ¦ North of these ¦ ¦ ¦ ¦ ¦ ¦

¦ ¦ lines, extensive ¦

¦ ¦ areas of bedrock ¦ ¦ ¦ ¦ ¦ ¦

¦ ¦ are concealed. ¦

¦ + + ¦ ¦ ¦ ¦ ¦

C ¦ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

¦ + ¦ ¦ ¦ ¦ ¦

E ¦ ¦ +------+ +------+ +-------------+

¦ ¦ ¦ Tp ¦ ¦ ¦ Tpc ¦ ¦ ¦ ¦ Tpv ¦ Tpf ¦ ¦ ¦

N ¦ ¦ +------+ +------+ +-------------+

¦ ¦ PLIOCENE ¦ PLIOCENE CONTINENTAL ¦ ¦ PLIOCENE + ¦ ¦

O ¦ ¦ + DEPOSITS VOLCANIC ROCKS +------+ ¦ +------+

¦ ¦ +------+ ¦ Includes ¦ Includes Miocene and ¦ ¦ Tpf, Felsic ¦ uTa ¦ ¦ ¦ ¦ Ti ¦ ¦

Z ¦ ¦ ¦ Tm ¦ ¦ Pliocene Quaternary deposits volcanic rocks. +------+ ¦ +------+

¦ ¦ +------+ ¦ in ¦ in places. ¦ ¦ UPPER ¦ Cascade ¦ TERTIARY ¦

O ¦ ¦ MIOCENE ¦ Southeastern + +-------------+ TERTIARY ¦ Range INTRUSIVE

¦ ¦ Pliocene included ¦ U.S. ¦ +------+ ¦ +------+ ¦ ¦ ¦ Tmv ¦ Tmf ¦ ANDESITE ¦ of ¦ ROCKS ¦

I ¦ ¦ in places. ¦ ¦ Tmc ¦ ¦ Tmoe ¦ ¦ +-------------+ ¦ Wash- Plugs, stocks,

¦ ¦ + ¦ +------+ ¦ +------+ ¦ ¦ MIOCENE +------+ ¦ ington ¦ and laccoliths ¦

C ¦ ¦ +------+ MIOCENE CONTINENTAL MIOCENE AND ¦ VOLCANIC ROCKS ¦ lTa ¦ ¦ and of all Tertiary

¦ ¦ ¦ To ¦ ¦ DEPOSITS ¦ OLIGOCENE ¦ ¦ Tmf, Felsic +------+ ¦ Oregon. ¦ ages; some ¦

¦ ¦ +------+ EUGEOSYNCLINAL ¦ volcanic rocks. LOWER ¦ granite plutons

¦ ¦ OLIGOCENE ¦ +------+ ¦ DEPOSITS ¦ Olympic ¦ TERTIARY ¦ ¦ of early to ¦

¦ T ¦ + + ¦ Toc ¦ ¦ Pennin- +-------------+ ANDESITE ¦ middle Tertiary

¦ E ¦ ¦ +------+ ¦ ¦ +------+ ¦ +------+ ¦ sula, ¦ ¦ lTv ¦ lTf ¦ + ¦ age. ¦

¦ R ¦ ¦ ¦ Te3 ¦ ¦ OLIGOCENE CONTINENTAL ¦ Toee ¦ ¦ Wash- +-------------+

¦ T ¦ ¦ +------+ ¦ ¦ DEPOSITS ¦ +------+ ¦ ington. ¦ LOWER TERIARY ¦ ¦

¦ I ¦ ¦ JACKSON GROUP ¦ OLIGOCENE AND ¦ VOLCANIC ROCKS

¦ A ¦ E ¦ ¦ Atlantic ¦ +------+ ¦ EOCENE ¦ ¦ Oligocene and Eocene; ¦ ¦

¦ R ¦ O ¦ +------+ ¦ and +------+ ¦ Tec ¦ EUGEOSYNCLINAL ¦ some Cretaceous

¦ Y ¦ C ¦ ¦ Te2 ¦ ¦ Gulf ¦ Te ¦ ¦ +------+ ¦ DEPOSITS ¦ ¦ included in Arizona ¦ ¦

¦ ¦ E ¦ +------+ ¦ Coastal +------+ EOCENE CONTINENTAL ¦ and elsewhere.

¦ ¦ N ¦ CLAIBORNE GROUP ¦ Plains. EOCENE ¦ DEPOSITS ¦ +------+ ¦ ¦ lTf, Felsic volcanic ¦ ¦

¦ ¦ E ¦ ¦ ¦ Tee ¦ ¦ rocks in southwestern

¦ ¦ ¦ +------+ ¦ ¦ +------+ ¦ +------+ ¦ ¦ Colorado and New Mexico. ¦ ¦

¦ ¦ ¦ ¦ Te1 ¦ ¦ ¦ Tel ¦ EOCENE ¦ +

¦ ¦ ¦ +------+ ¦ ¦ +------+ ¦ EUGEOSYNCLINAL ¦ ¦ +--------+ ¦ Coast ¦ ¦

¦ ¦ ¦ WILCOX GROUP ¦ EOCENE LACUSTRINE DEPOSITS ¦ ¦ Teb ¦ ¦ Ranges

¦ ¦ + + ¦ DEPOSITS ¦ + ¦ +--------+ ¦ of ¦ ¦

¦ ¦ +------+ EOCENE ¦ Wash-

¦ ¦ ¦ Tx ¦ ¦ +------+ ¦ ¦ MARINE ¦ ington ¦ ¦

¦ ¦ +------+ ¦ Txc ¦ PILLOW ¦ and

¦ ¦ PALEOCENE ¦ +------+ ¦ ¦ BASALT ¦ Oregon. ¦ ¦

¦ ¦ Includes Midway PALEOCENE CONTINENTAL +

¦ ¦ Group of Gulf ¦ DEPOSITS ¦ ¦ ¦ ¦

¦ ¦ Coastal Plain.

+ + ¦ ¦ ¦ ¦ ¦

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -

¦ ¦ ¦ ¦ ¦

+ + + + +------+ +

¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ Kg3 ¦ ¦ ¦

¦ ¦ ¦ +------+ ¦ +------+ ¦

¦ ¦ ¦ ¦ uK4 ¦ ¦ ¦ ¦ ¦ ¦ LATEST ¦ ¦

¦ ¦ ¦ +------+ ¦ CRETACEOUS ¦

¦ ¦ ¦ NAVARRO GROUP ¦ ¦ ¦ ¦ ¦ GRANITIC ¦ Arizona, ¦

¦ ¦ ¦ (=Laramie and ¦ ROCKS ¦ Colorado,

¦ ¦ ¦ other formations) ¦ ¦ ¦ ¦ ¦ Laramide gran- ¦ and ¦

¦ ¦ ¦ ¦ itic rocks of ¦ Montana.

¦ ¦ ¦ +--------+ ¦ ¦ ¦ ¦ ¦ common usage. ¦ ¦

¦ ¦ ¦ ¦ ¦uK3b¦ ¦ Mainly 70 to ¦

¦ ¦ ¦ ¦uK3+----¦ ¦ ¦ ¦ ¦ ¦ 80 my, but ¦ ¦

¦ ¦ ¦ ¦ ¦uK3a¦ ¦ includes early ¦

¦ ¦ ¦ +--------+ ¦ ¦ ¦ + ¦ ¦ Tertiary in ¦ ¦

¦ ¦ U ¦ TAYLOR GROUP ¦ +------+ ¦ + places. +

¦ ¦ P ¦ (=Montana Group) ¦ ¦ ¦ ¦ Ke ¦ ¦ ¦ +------+ ¦ ¦ ¦

¦ ¦ P ¦ In Montana plains, ¦ +------+ ¦ ¦ Kv ¦ ¦ Montana, +------+ +

¦ ¦ E ¦ separated into ¦ Atlantic ¦ ¦ CRETACEOUS ¦ ¦ +------+ ¦ Arizona, ¦ ¦ Kg2 ¦ ¦ ¦

¦ ¦ R ¦ uK3a and b at ¦ and EUGEOSYNCLINAL ¦ North- CRETACEOUS ¦ and New +------+ ¦

¦ ¦ ¦ base of Judith ¦ Gulf ¦ ¦ DEPOSITS ¦ western ¦ VOLCANIC ¦ Mexico. ¦ UPPER ¦ ¦

¦ ¦ ¦ River Formation. ¦ Coastal Mainly Upper ¦ Cali- ROCKS ¦ CRETACEOUS ¦

¦ ¦ ¦ ¦ Plains ¦ ¦ Cretaceous, ¦ fornia. ¦ + ¦ GRANITIC ¦ ¦

¦ ¦ ¦ +------+ ¦ and +------+ some Paleocene ¦ ROCKS ¦

¦ ¦ ¦ ¦ uK2 ¦ ¦ western ¦ uK ¦ ¦ ¦ and Eocene. ¦ ¦ ¦ 80-90 my ¦ Sierra ¦

¦ C ¦ ¦ +------+ ¦ interior +------+ + ¦ Nevada, ^

¦ R ¦ ¦ AUSTIN AND EAGLE ¦ region. UPPER CRETACEOUS ¦ +------+ ¦ ¦ ¦ +------+ ¦ California. ¦ ¦

¦ E ¦ ¦ FORD GROUPS ¦ ¦ Kc ¦ ¦ Kg1 ¦ ¦ ¦

¦ T ¦ ¦ (=Colorado Group) ¦ ¦ +------+ ¦ ¦ ¦ +------+ ¦ ¦ ¦

¦ A ¦ ¦ ¦ CRETACEOUS LOWER ¦ ¦

¦ C ¦ ¦ +------+ ¦ ¦ CONTINENTAL DEPOSITS ¦ ¦ ¦ CRETACEOUS ¦ ¦ ¦

¦ E ¦ ¦ ¦ uK1 ¦ ¦ Includes Upper and GRANITIC ¦ ¦

¦ O ¦ ¦ +------+ ¦ ¦ Lower Cretaceous, ¦ ¦ ¦ ROCKS ¦ / ¦

¦ U ¦ ¦ WOODBINE AND ¦ depending on 105-120 my + /

¦ S ¦ ¦ TUSCALOOSA GROUPS ¦ ¦ locality. ¦ ¦ ¦ / ¦

¦ ¦ ¦ (=Dakota Group) ¦ +-----------------------------+

¦ ¦ ¦ Lower Cretaceous ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦

¦ ¦ ¦ included in parts ¦ ¦ +-------------+ + ¦

¦ ¦ ¦ of Rocky Mountain ¦ ¦ ¦ ¦ ¦ ¦ ¦ Kg ¦ Kgn ¦ ¦ ¦ ¦

¦ ¦ ¦ and High Plains ¦ ¦ +-------------+ ¦ Western ¦

M ¦ ¦ + regions. + ¦ ¦ ¦ ¦ ¦ CRETACEOUS ¦ United ¦ ¦

¦ ¦ ¦ GRANITIC ROCKS ¦ States. ¦

E ¦ ¦ + +------+ + ¦ ¦ ¦ ¦ ¦ Kgn, border ¦ ¦ ¦

¦ ¦ ¦ ¦ lK3 ¦ ¦ ¦ gneiss of Idaho ¦ ¦

S ¦ ¦ ¦ +------+ ¦ ¦ ¦ ¦ ¦ ¦ batholith. + ¦ ¦

¦ ¦ ¦ WASHITA GROUP ¦ ¦ ¦

O ¦ ¦ L ¦ ¦ ¦ ¦ ¦ ¦ ¦ +------+ + ¦ ¦

¦ ¦ O ¦ +------+ ¦ +------+ ¦ ¦ Ki ¦ ¦ ¦

Z ¦ ¦ W ¦ ¦ lK2 ¦ ¦ Texas. ¦ lK ¦ ¦ ¦ ¦ ¦ ¦ +------+ ¦ ¦ ¦

¦ ¦ E ¦ +------+ ¦ +------+ ¦ CRETACEOUS ¦ ¦

O ¦ ¦ R ¦ FREDERICKSBURG ¦ LOWER CRETACEOUS ¦ ¦ ¦ ¦ ¦ INTRUSIVE ¦ Arkansas.¦ ¦

¦ ¦ ¦ GROUP ¦ ¦ ROCKS ¦ ¦

I ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ Small plugs ¦ ¦ ¦

¦ ¦ ¦ +------+ ¦ ¦ and stocks of ¦ ¦

C ¦ ¦ ¦ ¦ lK1 ¦ ¦ ¦ ¦ ¦ ¦ ¦ alkalic rocks. + ¦ ¦

¦ ¦ ¦ +------+ ¦ ¦ ¦

¦ ¦ + TRINITY GROUP + ¦ ¦ +------+ + ¦ ¦ +-----------------------------+ ¦

¦ + ¦ uMze ¦ ¦

¦ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- - ¦-- -- -- -- -- -- -+ +------+-- -- -+ -- -- -- -- -- +- -- -- -- -- -- -- -- -- -- --¦ -- -- -- -- -- -- -- -- -- ¦-- -- -- -- -- -- -

¦ J + + UPPER MESOZOIC ¦

¦ U ¦ +------+ ¦ +------+ ¦ Minne- ¦ EUGEOSYNCLINAL ¦ Western ¦ +------+ + Central ¦ +------+ ¦ +------+

¦ R ¦ ¦ J ¦ ¦ Jc ¦ ¦ sota, DEPOSITS ¦ Calif- ¦ lMzv ¦ ¦ Nevada, ¦ Jg ¦ ¦ ¦

¦ A ¦ +------+ ¦ +------+ ¦ Iowa, ¦ Lower Cretaceous¦ ornia, ¦ +------+ ¦ southern ¦ +------+ +------+ + ¦ +------+

¦ S ¦ JURASSIC JURASSIC ¦ and to Upper Jur- ¦ Oregon, LOWER ¦ Arizona, JURASSIC ¦ Jmi ¦ ¦ AREAS OF

¦ S ¦ ¦ CONTINENTAL ¦ Mich- ¦ assic, but with ¦ and ¦ MESOZOIC ¦ and New ¦ GRANITIC +------+ ¦ Western ¦ PHANEROZOIC

¦ I ¦ +------+ + +------+ DEPOSITS ¦ igan. uncertain lim- ¦ Wash- VOLCANIC ¦ Hampshire. ROCKS JURASSIC ¦ Nevada. METAMORPHISM

¦ C + ¦ JTr ¦ ¦ Colorado ¦ lMz ¦ ¦ + ¦ its; includes ¦ ington. ¦ ROCKS + ¦ MAFIC ¦ ¦ Shown by over-

¦ + +------+ ¦ Plateau. +------+ Franciscan as- ¦ INTRUS- ¦ print pattern;

¦ ¦ LOWER JURASSIC AND ¦