Scientific data near [55.21200,-131.54300]

Search area extends approximately 2.2 km east-west and 3.9 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Map quadrangles, from USGS or Canadian NTS
Ketchikan A-5	1:63,360 Alaska quadrangle
Ketchikan	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Ketchikan	hydrologic unit
190101	hydrologic accounting unit
Arctic Slope	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
DOgi	Igneous - Plutonic	Syenite, trondhjemite, and granite
KJgn	Sedimentary	Gravina-Nuzotin unit
SOmi	Metamorphic	Heterogeneous metamorphic rocks, southeast Alaska
Trhgs	Sedimentary	Hyd Group sedimentary rocks, undivided
Trhgs	Sedimentary	Hyd Group sedimentary rocks, undivided
Trhgs	Sedimentary	Hyd Group sedimentary rocks, undivided
Trhgv	Sedimentary	Hyd Group igneous rocks, undivided
Trhgv	Sedimentary	Hyd Group igneous rocks, 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
Ketchikan '76	M-Dz	Ketchikan '76 8529 line km with spacing 1.60 km over parts of AK
Annette Island	M-D	Annette Island 997 line km with spacing 0.40 km over parts of AK
Ketchikan	M/R-D	Ketchikan 1609 line km with spacing 9.60 km over parts of AK

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
Alexander	Oceanic arc	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
CHY922	rock	igneous felsic
CHY923	rock	igneous felsic
CHY947	rock	igneous greenstone
CHY952	rock	igneous felsic
CHY953	rock	igneous felsic
CJL259	rock	metamorphic metabasite
CJL260	rock
CJL261	rock
CJL387	rock	igneous felsic
CJL388	rock	igneous felsic
M184035	rock	igneous greenstone
M184036	rock	igneous diorite
M185567	rock	metamorphic metabasite

Geochemistry of stream sediments in the US from the NURE-HSSR database

National-scale geochemical analysis of stream sediments and soils in the US collected and analyzed under the National Uranium Resource Evaluation program.

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Sample ID	Date collected	Sample type
7022007	1979-09-23	Wet natural-pond (or lake in Alaska) sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.

Geochemistry of water samples in the US from the NURE-HSSR database

National-scale geochemical analysis of water samples in the US collected and analyzed under the National Uranium Resource Evaluation program.

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Sample ID	Date collected	Sample type
3023640	1979-09-23	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.

National Geochemical Database: Rock

Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"

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Sample ID	Rock type	Rock name
CHY922	igneous	felsic
CHY923	igneous	felsic
CHY947	igneous	mafic
CHY952	igneous	felsic
CHY953	igneous	felsic
CJL259	igneous	mafic
CJL260	unspecified
CJL261	unspecified
CJL387	igneous	felsic
CJL388	igneous	felsic
M184035	igneous	greenstone
M184036	igneous	diorite
M185567	metamorphic	metabasite

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
Unnamed (ridge NE of Round Mountain)	Occurrence	CU
Unnamed	Occurrence	CU

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
Unnamed (ridge NE of Round Mount...	Undetermined	Cu

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
Late Continental Arc	porphyry copper	Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Oligocene-Pliocene)
Intermontane Island-Arc	porphyry copper	Porphyry Cu systems associated with pre-accretionary Triassic and Jurassic calc-alkalic island arcs that formed offshore of western North America
Intermontane Island-Arc Cu-Au	porphyry copper	Triassic and Jurassic alkalic igneous rocks of accreted island arcs that formed offshore of western North America
Insular Mixed Island- and Continental Arc	porphyry copper	Calc-alkalic igneous rocks of accreted Jurassic island-arc terranes
Cordilleran Continental Arc	porphyry copper	Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Jurassic-Eocene)
Southeast Alaska Tertiary	porphyry copper	Tertiary subduction and postsubduction calc-alkalic plutons of southeast Alaska
Alaska Peninsula and Aleutian Islands	porphyry copper	Tertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands
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.