Scientific data near [45.43000,-69.19000]

Search area extends approximately 2.2 km east-west and 3.2 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Piscataquis	county
Maine	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Silver Lake	quadrangle 1:24,000 scale
Dover-foxcroft	quadrangle 1:100,000 scale
Millinocket	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
Piscataquis	hydrologic unit
Penobscot	hydrologic accounting unit
Penobscot	hydrologic subregion
New England	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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Unit	State	Lithology
Devonian gabbro/diorite/ultramafic rocks	ME	Devonian
Devonian Carrabassett Formation	ME	Devonian
Devonian - Silurian Madrid Formation	ME	Devonian - Silurian
Silurian Smalls Falls Formation	ME	Silurian

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
Katahdin (Piscataquis)	M-Dz	Katahdin (Piscataquis) 2055 line km with spacing 0.80 km over parts of ME
Millinocket	M/R-D	Millinocket 3057 line km with spacing 4.80 km over parts of ME

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
Ganderia	Passive margin	Southeastern Laurentia and Appalachians

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
Katahdin Iron Works	unclassified
Katahdin Iron Works	Past Producer	Maine, United States
Katahdin Pyrrhotite Deposit	Past Producer	Maine, United States

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
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.