Scientific data near [64.64368,-165.49971]

Search area extends approximately 2.2 km east-west and 5.2 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Nome	Census area
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Nome C-1	1:63,360 Alaska quadrangle
Nome	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Nome	hydrologic unit
190501	hydrologic accounting unit
South Central Alaska	hydrologic subregion
Alaska	hydrologic region

Geology of US states

Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format

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Map symbol	Lithology	Unit name
Pzncs	Metamorphic	Younger schist
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided

Airborne geophysical surveys

Aerial surveys of magnetic anomaly and gamma ray emission; older surveys were analog record which have been digitized, newer surveys collected data in digital form.

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ID	Data type	Description
Cady	M-D	Cady -9999 line km with spacing 0.40 km over parts of AK
Nome 1993	M/EM-D	Nome 1993 3856 line km with spacing 0.40 km over parts of AK
Nome	M/R-D	Nome 346 line km with spacing 9.60 km over parts of AK

Estimates of undiscovered mineral resources

National Mineral Resource Assessment 1998: Estimates of the number of undiscovered mineral resources of gold, silver, copper, lead, and zinc within identified permissive tracts (geographic areas in which mineral deposits may form).

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Tract	Deposit Type	Mineralization age
AK-WC17	Placer Au
AK-WC01	Besshi massive sulfide
AK-WC09	Low-sulfide Au-quartz veins
AK-WC27	Sedex Zn-Pb

The continental crust

Seventy-seven major components of the North American continent were delineated at a general scale (1:5,000,000); including the general composition, geological environment, and types of primary metals endowments that can be expected in each domain.

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Domain	Crust type	Region
Brooks-Seward	Passive margin	Alaska

Alaska Geochemical Database, Version 2.0 (AGDB2)--including "best value" data compilations for rock, sediment, soil, mineral, and concentrate sample media

Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.

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Lab ID	Sample medium	Description
BDN315	sediment
BDN316	sediment
BDN341	sediment
BDN342	sediment
BDN367	sediment
BDN368	sediment
BDN395	sediment
BDN396	sediment
BDN423	sediment
BDN424	sediment
BDN451	sediment
BDN452	sediment
BDN479	sediment
BDN480	sediment
BFQ020	sediment
BFQ027	sediment
BFQ097	concentrate	panned only concentrate
BFQ100	concentrate	panned only concentrate
BFQ128	sediment
BFQ130	sediment
BFQ169	sediment
BFQ176	sediment
BFQ216	concentrate	panned only concentrate
BFQ218	concentrate	panned only concentrate
BFQ281	concentrate	panned only concentrate
BFQ284	concentrate	panned only concentrate
BFQ286	concentrate	panned only concentrate
BFQ704	sediment
BFQ708	sediment
CAG038	sediment
CAG054	sediment
CAG056	sediment
CJL689	concentrate	panned only concentrate
M125473	sediment

Mineral Resource Data System

MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references.

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Site name	Development	Commodities
Sledge Creek	Prospect	AU AG SN W
Boulder	Prospect	AU SB W
Unnamed (lower Boulder Creek)	Prospect	AU
Dakota	Prospect	AU SB W
Twin Mountain Creek	Past Producer	W CU AU
Boulder	Occurrence	W SB AU
Boulder Creek	Occurrence	W SB BI AU
Unnamed (Boulder Creek east bench)	Prospect	AU AS W

Alaska Resource Data File

A comprehensive database of Alaskan mineral deposits compiled from the published literature and from unpublished reports and data from industry, the US Bureau of Land Management, and USGS.

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Site	Status	Commodities
Sledge Creek	Probably inactive	Au
Dakota	Inactive	Au?
Unnamed (Boulder Creek east benc...	Inactive	Au
Boulder Creek	Inactive	Au
Unnamed (lower Boulder Creek)	Inactive	Au

National Geochemical Database: Sediment

Geochemical analysis of sediment samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
BDN315	stream/river	stream
BDN316	stream/river	stream
BDN341	stream/river	stream
BDN342	stream/river	stream
BDN367	stream/river	stream
BDN368	stream/river	stream
BDN395	stream/river	stream
BDN396	stream/river	stream
BDN423	stream/river	stream
BDN424	stream/river	stream
BDN451	stream/river	stream
BDN452	stream/river	stream
BDN479	stream/river	stream
BDN480	stream/river	stream
BFQ020	stream/river	stream
BFQ027	stream/river	stream
BFQ128	stream/river	stream
BFQ130	stream/river	stream
BFQ169	stream/river	stream
BFQ176	stream/river	stream
BFQ704	stream/river	stream
BFQ708	stream/river	stream
CAG038	stream/river	stream
CAG054	stream/river	stream
CAG056	stream/river	stream
M125473	stream/river	rock aggregate: graphitic schist, quartzite and ma;; stream

National Geochemical Database: Concentrate

Geochemistry of concentrates from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
BFQ097	stream/river	stream
BFQ100	stream/river	stream
BFQ216	stream/river	stream
BFQ218	stream/river	stream
BFQ281	stream/river	stream
BFQ284	stream/river	stream
BFQ286	stream/river	stream
CJL689	stream/river	precious metal mineralization;; Boulder Ck;; stream

Global assessment of undiscovered copper resources

Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.

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Tract name	Deposit type	Geology
Yukon-Tanana Upland	porphyry copper	Kluane Arc and Tertiary Kuskokwim Mountains volcanic-plutonic belt (continuation of Canadian Cordilleran continental arc); north of the Denali Fault
Chukotka	porphyry copper	Early to Late Cretaceous volcanic and intrusive rocks composing island-arc, continental-arc, and collisional magmatic belts associated with the Chukotka microcontinent.
Pacific Margin	porphyry copper	Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia.

Prospect- and mine-related features on USGS topographic maps

Symbols indicating mining-related features digitized from historical USGS topographic maps in the western part of the conterminous US. Includes prospect pits, mine shafts and adits, quarries, open-pit mines, tailings piles and ponds, gravel and borrow pit

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Feature ID	Feature type	Feature name
Tailings - Undifferentiated	polygon