U.S. Department of the Interior

aUSGS

science for a changing world U.S. Geological Survey
' . ° 159°
—_ 168 165 162" 67°
Sec KOTZEBUE Cottn
SHISHMARI be oe 10 Rory
s ALASKA al iy
ws wr
: 2 t
é (
toe er TELLER BENDELEBEN CANDLE
MAP LOCATION 1,283 10a11 12
1 Sainsbury (1972); all
CLL. Sainsbury, unpub. data (1969) ren
2 J. Toro, written commun. (2006) NOME __ SOLOMON NORTON BAY
3 A.B. Till and others, unpub. mapping, 3,4,5,6,7&8 No 3,108 11 12
(1985-1986, 2004-2007) SY .
Amato and Miller (2004) b4°

4
5 Bundtzen and others (1994)
6 Pollock (1982)

7 Sainsbury and others (1972)

8 Hannula (1993)

9 Begét and others (1996)

10 Till and others (1986)

11 Werdon and others (2005a);
Werdon and others (2005b);
Newberry and others (2005)

12 Patton and others (2005)

INDEX MAP SHOWING SOURCES OF GEOLOGIC MAPPING
AND 1:250,000-SCALE QUADRANGLES

66°00'

Little
Diomede s
Island *
v

65°00! King Island

168°00'

SCALE 1:500 000
10 oO 10 20

=

10 0 10 20 30

40 50 KILOMETERS:

Serer ert

NATIONAL GEODETIC VERTICAL DATUM OF 1929

Shaded relief from National Elevation Dataset (NED) 42.7-meter Digital Elevation Models (DEMs)
Universal Transverse Mercator Zone 3N; 1927 North American Datum
Base layer for water from 1:250,000 quadrangles (1950-1955) and National Hydrography Dataset

GPO.
Printed on recyed paper

40 MILES
1

165°00)

Tv
Lake.

Oo

[e)
Or o&

oD 6 Nugnugalul

5 ( Cape Espenberg
re o.,4
oO

fileak
lakes

P
6

XN

162°00'

Virgilian
Missourian

Cape Deceit Desmoinesian

Chesterian = 4

Meramecian —+

Osagean =
66°00"

Kgu
Sledge Island

Cape Nome.

NORTON SOUND

Famennian — _|

Frasnian =
Givetian 4
Eifelian 4
Emsian 4
Pragian 4
Lochkovian _|
Pridoli 4
Ludlow
Wenlock |

Llandovery _|

Ashgill 4

Caradoc 4

Lianvirn 4

Arenig 4

Tremadoc 4

Open-File Report 2009-1254

CORRELATION OF MAP UNITS

Sheet 1 of 2

Pamphlet accompanies map

Kinderhookian _

65°00!

Geology compiled by Alison B. Till (2008)

GIS database and digital cartography by Keith A.
Labay and Heather A. Bleick

Edited by Theresa Iki

165°00'

Manuscript approved for publication November 4,
2009

%*€ Conodont and (or) other phosphatic microfossil

SURFICIAL MESOZOIC AND CENOZOIC
DEPOSITS IGNEOUS ROCKS
Gi , HOLOCENE 7 Je
Qs PLEISTOCENE [+ QUATERNARY 5
7 N
sail! L TERTIARY Z
4 16
; a
kwe | Kd [ kta | Kkg / CRETACEOUS 8
Kv J [ 3
8
HIGH-GRADE METAMORPHIC =
GRANTLEY HARBOR NOME AND ASSOCIATED KUGRUK
YORK TERRANE FAULT ZONE COMPLEX IGENOUS ROCKS — FAULT ZONE
vr vr vr vr , HOLOCENE _ soo
LAYERED SCATTERED ooo ceENE — EQUATERNARY | &
YORK MOUNTAINS UNITS WITH SEQUENCE AND METACARBONATE 4 g
SUCCESSION UNCERTAIN AFFINITIES RELATED ROCKS ROCKS METATURBIDITES L TERTIARY r z
: 1 ' + 1 | 148
+ CRETACEOUS
4 Q
Lg
L JURASSIC 2
L TRIASSIC
+ PERMIAN
TL Upper 4
L Middle [PENNSYLVANIAN
TL Lower
L Upper / MISSISSIPPIAN
4 CARBONIFEROUS
L Lower
; L Upper
td co
/ Ds 4
ad, .
t P Middle L DEVONIAN
7 Q
aS
4 [- Lower 8
LD | |
Penp | J &
é
“upper
ts [ SILURIAN
L Lower
L Upper
[Miele + ORDOVICIAN
L Lower
L CAMBRIAN g
| 18
218
L g 2
J & &
S| z
Ble

+ Graptolite age. X Megatossil age.

age, generally constrained within one or two
stages. See Description of Map Units for precise
age.

LIST OF MAP UNITS

[See Description of Map Units (in pamphlet) for complete unit descriptions. Some unit
exposures on the map are too small to distinguish the color for unit identiication. These
units are labeled where possible, and unlabeled units are attributed in the database.]
SURFICIAL DEPOSITS
Qs Surficial deposits, undivided (Quaternary)

MESOZOIC AND CENOZOIC IGNEOUS ROCKS
Lost Jim Basalt (Holocene)

QTv Weathered volcanic rocks, undivided (Quaternary and Tertiary)

TKv Felsic volcanic rocks (Tertiary and Cretaceous)

Tin-bearing granitic stocks (Late Cretaceous)

Dikes and stocks (Cretaceous)

Pargon pluton (Cretaceous)

Kigluaik diorite (Cretaceous)

Kigluaik granite (Cretaceous)
5 Stocks, undifferentiated (Cretaceous)

Kugruk pluton (Cretaceous)

Windy Creek pluton (Cretaceous)

Kd Darby pluton (Cretaceous)

[ket] Diorite (Cretaceous)

Kkg Granodiorite (Cretaceous)

Monzonite-syenite (Cretaceous)

Gneissic monzonite (Cretaceous)

Bendeleben and Kuzitrin plutons (Cretaceous)

Dry Canyon stock (Early Cretaceous)

Granite and granodiorite (Early Cretaceous)

[Tks] Syenite, monzonite, and nepheline syenite (Early Cretaceous)

F kv-| Andesite and basalt flows and volcaniclastic rocks (Early Cretaceous)

[xa] Granitic rocks, undifferentiated (Cretaceous)

Preliminary Bedrock Geologic Map of the Seward Peninsula, Alaska, and Accompanying Conodont Data

By
Alison B. Till’, Julie A. Dumoulin', Melanie B. Werdon2, and Heather A. Bleick!
2010

1U.S. Geological Survey, Anchorage, Alaska 2Alaska

of Geological and Geophysical Surveys, Fairbanks, Alaska

4%) Problematic fossil age. See

I
* * Less precise fossil age. @ U-Pb zircon age.

descriptions and (or) fossil table A-1
for discussion.

YORK TERRANE

YORK MOUNTAINS SUCCESSION
[bs] Limestone (Devonian and (or) Silurian)

[soa] Dark limestone (Silurian and Upper Ordovician)

soul

Limestone and dolostone, undifferentiated (Silurian and Ordovician)

[o8] Limestone and shale (Ordovician)
La | Limestone (Ordovician)

[oa] Argillaceous limestone and limestone (Ordovician)

UNITS WITH UNCERTAIN AFFINITIES

[=] Limestone (Paleozoic)

fu] Limestone, dolomitic limestone, and marble (Mississippian)

[ae | Metagabbro (Paleozoic)
Limestone and dolomiti

[oe | Sandstone, siltstone, and limestone (Ordovician to Proterozoic)

limestone (Ordovician to Proterozoic)

OBp Phyllite (Ordovician to Proterozoic)

GRANTLEY HARBOR FAULT ZONE
[pe | Phyllite and argillite (Paleozoic)

Pel | Metalimestone (Paleozoic and Proterozoic?)

Ret Metasiltstone and phyllite (Paleozoic and Proterozoic?)

NOME COMPLEX

LAYERED SEQUENCE
Penp | Metagabbro and metasediments (Paleozoic?)

Ds Pelitic schist (Devonian?)

Des Pelitic, calcareous, and graphitic schist (Devonian)

Z| Mixed marble, graphitic metasiliceous rock, and schist (Devonian to
Ordovician)—Overlay pattern indicates area of a distinctive belt of
dolostone and marble of Silurian-Devonian age

[9 | Granitic orthogneiss (Devonian)
Le] Felsic schist (Devonian)
lf

Casadepaga Schist (Ordovician)

[om | Impure chlorite marble (Ordovician)

eT] Metagranitic rocks (Late Proterozoic)

¢ U-Pb zircon age and error.

SCATTERED METACARBONATE ROCKS
Marble, undivided (Paleozoic)

Pam

[pa | Dolostone, undivided (Paleozoic)

| Marble of the Moon Mountains (Paleozoic)

[ban | Dolostone, metalimestone, and marble (Devonian)

[4] Dolostone (Cambrian)

METATURBIDITES
7 De bm | Black marble (Devonian to Cambrian)

Calcareous schist of Kwiniuk Mountain (Devonian to Cambrian)

[[boom | Black metalimestone and marble (Devonian to Ordovician)

HIGH-GRADE METAMORPHIC AND ASSOCIATED IGNEOUS ROCKS

[Ren | High-grade metasedimentary and metaigneous rocks (Paleozoic and
Proterozoic)

[TRen | Marble (Paleozoic and Proterozoic?)

[pes | Gneiss and orthogneiss (Paleozoic? and Proterozoic?)

LES] Orthogneiss (Proterozoic)
Le] Metavolcanic rocks (Proterozoic)

KUGRUK FAULT ZONE

| TKs Carbonate-rich conglomerate and sandstone; mudstone, siltstone and
coal (Tertiary and Cretaceous)

| | Spruce Creek tonalite (Jurassic)

[mam | Metamorphosed mafic rocks and serpentinite (Mesozoic and Paleozoic?)

1:250,000-scale quadrangle boundary
Contact—Depositional, intrusive, or metamorphic
mannan Fault—Dotted where concealed

Road

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For sale by U.S. Geological Survey, Information Services, Box 25286,
Federal Center, Denver, CO, 80225, 1-888-ASK-USGS

Digital files available at http://pubs.usgs.gov/ot/2009/1254