Scientific data near [55.38611,-131.46722]

Search area extends approximately 17.8 km east-west and 31.4 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Ketchikan Gateway	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Ketchikan B-5	1:63,360 Alaska quadrangle
Ketchikan	1:250,000 Alaska quadrangle

Geology of US states

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

Database Home

Map symbol	Lithology	Unit name
KJgn	Sedimentary	Gravina-Nuzotin unit
KJgv	Sedimentary	Volcanic rocks of the Gravina-Nutzotin belt
Kmgr	Igneous - Plutonic	Granitic rocks of central and southeast Alaska
Kmgr	Igneous - Plutonic	Granitic rocks of central and southeast Alaska
Kum	Igneous - Plutonic	Ultramafic rocks of southeast Alaska
Kum	Igneous - Plutonic	Ultramafic rocks of southeast Alaska
MzPzss	Metamorphic	Metasedimentary and minor metavolcanic rocks along the west side of the Coast plutonic complex of Brew and Morrell (1979b)
MzPzss	Metamorphic	Metasedimentary and minor metavolcanic rocks along the west side of the Coast plutonic complex of Brew and Morrell (1979b)
MzPzss	Metamorphic	Metasedimentary and minor metavolcanic rocks along the west side of the Coast plutonic complex of Brew and Morrell (1979b)
MzPzsv	Metamorphic	Metavolcanic rocks west of the Coast plutonic complex of Brew and Morrell (1979b)
Pm	Metamorphic	Marble along the west side of the Coast plutonic complex of Brew and Morrell (1979b)
Pzks	Metamorphic	Metamorphic rocks of the Kah Shakes sequence of Rubin and Saleeby (1991), undivided
Tgbe	Igneous - Plutonic	Younger gabbro of southeast Alaska
w		Water

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.

Database Home

ID	Data type	Description
Ketchikan '76	M-Dz	Ketchikan '76 8529 line km with spacing 1.60 km over parts of AK
Ketchikan	M/R-D	Ketchikan 1609 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).

Database Home

Tract	Deposit Type	Mineralization age
AK-SE05	Sierran Kuroko mass. sulf.
AK-SE13	Polymetallic vein
AK-SE03	Low-sulfide Au-quartz veins

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.

Database Home

Domain	Crust type	Region
Taku	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.

Database Home

Lab ID	Sample medium	Description
CAA732	rock	metamorphic greenschist
CAA733	rock	metamorphic phyllite
CAA734	rock	metamorphic metavolcanic
CAS132	rock	metamorphic phyllite
CAS133	rock	metamorphic hornfels
CAS134	rock	igneous tonalite
CAS135	rock	metamorphic hornfels
CAS136	rock	metamorphic hornfels
CAS137	rock	metamorphic metapelite
CAS138	rock	igneous aplite
CAS139	rock	metamorphic metapelite
CAS140	rock	igneous aplite
CAS141	rock	metamorphic meta-argillite
CAS142	rock	igneous tonalite
CAS143	rock	igneous quartz diorite
CAS144	rock	metamorphic meta-argillite
CAS145	rock	metamorphic marble
CAS146	rock	metamorphic meta-argillite
CAS147	rock	metamorphic hornfels
CAS159	rock	igneous quartz monzonite
CAS160	rock	metamorphic phyllite
CAS162	rock	metamorphic metabreccia
CAS163	rock	metamorphic meta-argillite
CAS164	rock	metamorphic schist
CAS165	rock	metamorphic meta-argillite
CAS167	rock	metamorphic metabasalt
CAS168	rock	metamorphic metabasalt
CAS169	rock	metamorphic greenschist
CAS170	rock	igneous felsite
CAS174	rock	igneous tonalite
CAS175	rock	igneous adamellite
CAS176	rock	metamorphic hornfels
CAS179	rock	metamorphic meta-argillite
CAS180	rock	igneous granodiorite
CAS181	rock	metamorphic meta-argillite
CAS182	rock	metamorphic metasiltstone
CAS183	rock	metamorphic schist
CAS188	rock	igneous quartz monzonite
CAS189	rock	igneous granodiorite
CAS190	rock	metamorphic phyllite
CAS191	rock	igneous felsic
CCA035	rock	metamorphic greenschist
CCA036	rock	metamorphic greenschist
CCA037	rock	metamorphic greenschist
CCA062	rock	igneous quartz monzonite
CCA066	rock	igneous granodiorite
CCA067	rock	igneous granodiorite
CCA068	rock	metamorphic gneiss
CCA069	rock	metamorphic gneiss
CCA070	rock	metamorphic gneiss
CCA071	rock	metamorphic gneiss
CCA072	rock	metamorphic gneiss
CCA073	rock	metamorphic gneiss
CCA295	sediment
CCA295A	sediment
CCA296	sediment
CCA296A	sediment
CCA346	sediment
CCA347	sediment
CCA348	sediment
CCA348A	sediment
CCA349	sediment
CCA350	sediment
CCA359	sediment
CCA360	sediment
CCA361	sediment
CCA361A	sediment
CCA362	sediment
CCA363	sediment
CCA364	sediment
CCA365	sediment
CCA366	sediment
CCA369	sediment
CCA370	sediment
CCA370A	sediment
CCA371	sediment
CCA372	sediment
CCA372A	sediment
CCA373	sediment
CCA374	sediment
CCA375	sediment
CCA376	sediment
CCA376A	sediment
CCA377	sediment
CCA426	rock	igneous granodiorite
CCA477	rock	metamorphic gneiss
CCA481	rock	metamorphic gneiss
CCI113	sediment
CCI114	sediment
CCI670	sediment
CCI671	sediment
CCI672	sediment
CCI673	sediment
CCI974	sediment
CCI975	sediment
CCI976	sediment
CCI977	sediment
CCI978	sediment
CCJ111	sediment
CCJ112	sediment
CCJ113	sediment
CCJ125	sediment
CCJ126	sediment
CCJ136	sediment
CCM432	rock	igneous quartz diorite
CCM433	rock	igneous quartz porphyry
CCM434	rock	igneous quartz diorite
CCM446	rock	metamorphic gneiss
CCM454	rock	igneous quartz diorite
D248345	soil
D291089	rock	igneous diorite
D308126	rock	igneous basalt
D308129	rock	igneous basalt
D308130	rock	igneous basalt
D308132	rock	igneous tonalite
D308134	rock	igneous tonalite
D574559	rock	igneous gabbro
D574560	rock	igneous gabbro
D574561	rock	igneous gabbro
D574562	rock	igneous gabbro
D574563	rock	igneous gabbro
D574564	rock	igneous gabbro
D574565	rock	igneous gabbro
D574566	rock	igneous gabbro
D574567	rock	igneous gabbro
D574568	rock	igneous gabbro
D574569	rock	igneous gabbro
D574570	rock	igneous gabbro
D574581	rock	metamorphic metabasalt
D574657	rock	igneous quartz diorite
M118785	rock	igneous quartz diorite
M120915	rock	metamorphic metabasalt
M202455	rock	igneous gabbro
M202456	rock	igneous gabbro
M202457	rock	igneous gabbro
M202458	rock	igneous gabbro
M202459	rock	igneous gabbro
M202460	rock	igneous gabbro
M202461	rock	igneous gabbro
M202462	rock	igneous gabbro
M202463	rock	igneous gabbro
M202464	rock	igneous gabbro
M202465	rock	igneous gabbro
M202466	rock	igneous gabbro
M203099	rock	metamorphic metabasalt
W189422	rock	igneous basalt
W189423	rock	igneous basalt
W189424	rock	igneous basalt
W189425	rock	metamorphic metabasalt
W189426	rock	metamorphic metabasalt
W189791	rock	igneous felsic

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.

Database Home

Sample ID	Date collected	Sample type
7021648	1979-09-17	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7021703	1979-09-17	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7021704	1979-09-18	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7021705	1979-09-18	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7021706	1979-09-18	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7021721	1979-09-18	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.
7021722	1979-09-18	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7021723	1979-09-18	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.
7021724	1979-09-18	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.
7021776	1979-09-19	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.
7022096	1979-09-25	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.
7022097	1979-09-25	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.
7022117	1979-09-03	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7022118	1979-09-03	Wet stream 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.

Database Home

Sample ID	Date collected	Sample type
3023278	1979-09-17	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023334	1979-09-17	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023335	1979-09-18	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023336	1979-09-18	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023337	1979-09-18	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023352	1979-09-18	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023353	1979-09-18	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023354	1979-09-18	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023355	1979-09-18	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023407	1979-09-19	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023729	1979-09-25	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023730	1979-09-25	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023750	1979-09-03	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3023751	1979-09-03	Stream 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"

Database Home

Sample ID	Rock type	Rock name
CAA732	metamorphic	schist
CAA733	metamorphic	phyllite
CAA734	metamorphic	metafelsite
CAS132	metamorphic	phyllite
CAS133	metamorphic	hornfels
CAS134	igneous	tonalite
CAS135	metamorphic	hornfels
CAS136	metamorphic	hornfels
CAS137	metamorphic	metapelite
CAS138	igneous	aplite
CAS139	igneous	unspecified
CAS140	igneous	aplite
CAS141	metamorphic	meta-argillite
CAS142	igneous	tonalite
CAS143	igneous	aplite
CAS144	metamorphic	meta-argillite
CAS145	metamorphic	marble
CAS146	metamorphic	meta-argillite
CAS147	metamorphic	hornfels
CAS159	igneous	granodiorite
CAS160	metamorphic	phyllite
CAS162	metamorphic	metabreccia
CAS163	metamorphic	meta-argillite
CAS164	metamorphic	schist
CAS165	metamorphic	meta-argillite
CAS167	igneous	basalt
CAS168	igneous	basalt
CAS169	metamorphic	schist
CAS170	igneous	felsite
CAS174	igneous	tonalite
CAS175	igneous	adamellite
CAS176	metamorphic	hornfels
CAS180	igneous	granodiorite
CAS181	metamorphic	meta-argillite
CAS182	metamorphic	metasiltstone
CAS183	metamorphic	schist
CAS188	igneous	unspecified
CAS189	igneous	unspecified
CAS190	metamorphic	phyllite
CAS191	igneous	unspecified
CCA035	igneous	unspecified
CCA036	sedimentary	unspecified
CCA037	metamorphic	unspecified
CCA061	igneous	unspecified
CCA062	igneous	unspecified
CCA066	igneous	unspecified
CCA067	igneous	unspecified
CCA068	metamorphic	unspecified
CCA069	metamorphic	unspecified
CCA070	metamorphic	unspecified
CCA071	unspecified
CCA426	igneous	unspecified
CCA477	metamorphic	unspecified
CCA481	metamorphic	unspecified
CCM432	igneous	unspecified
CCM433	igneous	unspecified
CCM434	igneous	unspecified
CCM446	metamorphic	unspecified
CCM454	igneous	unspecified
D291089	igneous	diorite
D308126	igneous	basalt
D308129	igneous	basalt
D308130	igneous	basalt
D308132	igneous	tonalite
D308134	igneous	tonalite
D574559	igneous	gabbro
D574560	igneous	gabbro
D574561	igneous	gabbro
D574562	igneous	gabbro
D574563	igneous	gabbro
D574564	igneous	gabbro
D574565	igneous	gabbro
D574566	igneous	gabbro
D574567	igneous	gabbro
D574568	igneous	gabbro
D574569	igneous	gabbro
D574570	igneous	gabbro
D574581	metamorphic	metabasalt
D574657	igneous	quartz diorite
M118785	igneous	quartz diorite
M120915	metamorphic	metabasalt
M202455	igneous	gabbro
M202456	igneous	gabbro
M202457	igneous	gabbro
M202458	igneous	gabbro
M202459	igneous	gabbro
M202460	igneous	gabbro
M202461	igneous	gabbro
M202462	igneous	gabbro
M202463	igneous	gabbro
M202464	igneous	gabbro
M202465	igneous	gabbro
M202466	igneous	gabbro
M203099	metamorphic	metabasalt
W189422	igneous	basalt
W189423	igneous	basalt
W189424	igneous	basalt
W189425	igneous	basalt
W189426	igneous	basalt
W189791	igneous	felsic

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.

Database Home

Site name	Development	Commodities
Mahoney	Past Producer	CU AU PB AG ZN
Peterson	Prospect	AG AU CU PB ZN
Mahoney	Past Producer	PB ZN AG AU CD CU
Alaska Lead and Silver	Past Producer	AG PB ZN CD CU
Londevan	Prospect	AG PB ZN AU CU
Londevan	Prospect	AU PB AG ZN
Peterson	Prospect	AU PB AG ZN
Blue Streak	Prospect	AU CU NI
Unnamed (Coon Cove)	Prospect	CU PB ZN
Blue Streak	Prospect	AU CU NI
Unnamed (west shore of George Inlet)	Prospect	AG
Sharon	Prospect	CU ZN
Alaska Lead & Silver	Past Producer	PB AG ZN
Sharon No. 1	Prospect	AU ZN
Herring Cove 1,2	Prospect	SDG
Unnamed Coon Cove	Occurrence	STN
Paula 1-4	Prospect	AG
Alaska Lead & Silver Mill	Plant	PB ZN

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.

Database Home

Site	Status	Commodities
Mahoney; Ash; Asche	Undetermined	Pb;Zn
Unnamed (Coon Cove)	Undetermined	Cu;Pb;Zn
Sharon	Undetermined	Cu;Zn
Unnamed (west shore of George In...	Undetermined	Ag
Londevan; Lon-De-Van; Telegraph ...	Undetermined	Ag;Pb;Zn
Alaska Lead and Silver; A.L.S.	Undetermined	Ag;Pb;Zn
Peterson; Surprise	Undetermined	Ag;Au;Cu;Pb;Zn
Blue Streak	Undetermined	Au;Cu;Ni

An index to PGE-Ni-Cr deposits and occurrences in selected mineral-occurrence databases (web-accessible database)

A compendium of references to previously published databases and database records that describe PGE, nickel, and chromium deposits and occurrences. These data show where to obtain more detailed information about each deposit or occurrence.

Database Home

Deposit name	Deposit type	Location
Blue Streak	Occurrence	Alaska, United States
Blue Streak	Occurrence	Alaska, United States

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
CCA295	stream/river	stream
CCA295A	stream/river	stream
CCA296	stream/river	stream
CCA296A	stream/river	stream
CCA346	stream/river	stream
CCA347	stream/river	stream
CCA348	stream/river	stream
CCA348A	stream/river	stream
CCA349	stream/river	stream
CCA350	stream/river	stream
CCA359	stream/river	stream
CCA360	stream/river	stream
CCA361	stream/river	stream
CCA361A	stream/river	stream
CCA362	stream/river	stream
CCA363	stream/river	stream
CCA364	stream/river	stream
CCA365	stream/river	stream
CCA366	stream/river	stream
CCA369	stream/river	stream
CCA370	stream/river	stream
CCA370A	stream/river	stream
CCA371	stream/river	stream
CCA372	stream/river	stream
CCA372A	stream/river	stream
CCA373	stream/river	stream
CCA374	stream/river	stream
CCA375	stream/river	stream
CCA376	stream/river	stream
CCA376A	stream/river	stream
CCA377	stream/river	stream
CCI113	stream/river	stream
CCI114	stream/river	stream
CCI670	stream/river	stream
CCI671	stream/river	stream
CCI672	stream/river	stream
CCI673	stream/river	stream
CCI974	stream/river	stream
CCI975	stream/river	stream
CCI976	stream/river	stream
CCI977	stream/river	stream
CCI978	stream/river	stream
CCJ111	stream/river	stream
CCJ112	stream/river	stream
CCJ113	stream/river	stream
CCJ125	stream/river	stream
CCJ126	stream/river	stream
CCJ136	stream/river	stream

National Geochemical Database: Soil

Geochemical analysis of soil samples 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
D248345	forest/scattered timberland

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.

Database Home

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.