Scientific data near [39.34000,-122.74000]

Search area extends approximately 17.8 km east-west and 23.0 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Colusa	county
California	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Fouts Springs	quadrangle 1:24,000 scale
Lakeport	quadrangle 1:100,000 scale
Ukiah	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
Upper Stony	hydrologic unit
Lower Sacramento	hydrologic accounting unit
Sacramento	hydrologic subregion
California	hydrologic region
Areas administered by US Federal agencies
Mendocino National Forest	National Forest
National Forest FS	Type of land area
FS	Federal land areas administered by FS

Geology of US states

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

Database Home

Unit	State	Lithology
Franciscan Complex, unit 1 (Coast Ranges)	CA	Jurassic to Cretaceous
Franciscan melange	CA	Jurassic to Cretaceous
Mesozoic volcanic rocks, unit 1 (Coast Ranges)	CA	Jurassic to Cretaceous
Ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains)	CA	Middle to Late Jurassic

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
Ukiah 2009	M-D	Ukiah 2009 12311 line km with spacing 0.80 km over parts of CA
Clear Lake '85	M-D	Clear Lake '85 933 line km with spacing 0.80 km over parts of CA
Stonyford	M-Dz	Stonyford 1287 line km with spacing 1.60 km over parts of CA
Ukiah	M/R-D	Ukiah 2441 line km with spacing 9.60 km over parts of CA

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
PC39	Low-sulfide Au-quartz vein	Mesozoic
PC11	Massive sulfide, Besshi	Mesozoic

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
Franciscan	Accretionary wedge	Western Cordillera

National geochemical survey database

National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.

Database Home

Sample ID	Material	Source
C-257429	Sediment	Stream, Wet

Asbestos mines, prospects, and occurrences in the US

Location and mineralogical characteristics of former mines, prospects, and occurrences of asbestos in the continental US. No asbestos producing mines are currently active. Data here are drawn from several previously published reports.

Database Home

Deposit name	Deposit type	Location
Fouts Red Eye Spring	occurrence	Colusa, CA

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
Unknown	Occurrence	HG
Summit Springs	Unknown	CR
Moon Glade Prospect	Occurrence	CR
Cyote Claim	Occurrence	CR MN
Unnamed Location	Unknown	ASB
Old Glory Claim	Occurrence	MN

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
Summit Springs	unclassified	California, United States
Moon Glade Prospect	Occurrence	California, United States
Cyote Claim	Occurrence	California, United States

National Geochronological Database

Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.

Database Home

Sample ID	Sample source	Rock name
8593	Outcrop or artificial surface exposure	Schist

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
C257429	forest/scattered timberland	LAT/LONG FROM 100 METERS DOWNSTREAM AT ROAD--NO GPS RECEPTION AT SAMPLE SITE, LETTS CREEK
LDP001	stream/river	xcoord=51693.; ycoord=436002; stream
LDP002	stream/river	xcoord=51651.; ycoord=436077; stream
LDP003	stream/river	xcoord=51710.; ycoord=436148; stream
LDP004	stream/river	xcoord=51959.; ycoord=435621; stream
LDP005	stream/river	xcoord=51970.; ycoord=435613; stream
LDP006	stream/river	xcoord=51825.; ycoord=435727; stream
LDP007	stream/river	xcoord=51704.; ycoord=435796; stream
LDP008	stream/river	xcoord=51679.; ycoord=435710; stream
LDP009	stream/river	xcoord=51601.; ycoord=435868; stream
LDP010	stream/river	xcoord=51693.; ycoord=435750; stream
LDP011	stream/river	xcoord=52830.; ycoord=436202; stream
LDP092	stream/river	xcoord=52256.; ycoord=435486; stream
LDP093	stream/river	xcoord=52273.; ycoord=435500; stream
LDP094	stream/river	xcoord=52332.; ycoord=435463; stream
LDP095	stream/river	xcoord=52438.; ycoord=435421; stream
LDP096	stream/river	xcoord=52461.; ycoord=435426; stream
LDP097	stream/river	xcoord=52641.; ycoord=435560; stream
LDP098	stream/river	xcoord=52651.; ycoord=435577; stream
LDP099	stream/river	xcoord=52800.; ycoord=435586; stream
LDP103	stream/river	xcoord=51976.; ycoord=435863; stream
LDP104	stream/river	xcoord=51856.; ycoord=435962; stream
LDP105	stream/river	xcoord=51908.; ycoord=435983; stream
LDP110	stream/river	xcoord=52529.; ycoord=435696; stream
LDP111	stream/river	xcoord=52712.; ycoord=435657; stream
LDP112	stream/river	xcoord=52696.; ycoord=436084; stream
LDP113	stream/river	xcoord=52678.; ycoord=436131; stream
LDP114	stream/river	xcoord=52638.; ycoord=436140; stream
LDP115	stream/river	xcoord=52458.; ycoord=436240; stream
LDP116	stream/river	xcoord=52319.; ycoord=436290; stream
LDP117	stream/river	xcoord=52221.; ycoord=436321; stream
LDP118	stream/river	xcoord=52141.; ycoord=436264; stream
LDP119	stream/river	xcoord=52050.; ycoord=435568; stream
LDP120	stream/river	xcoord=52536.; ycoord=435498; stream
LDP121	stream/river	xcoord=52397.; ycoord=436212; stream
LDP122	stream/river	xcoord=52385.; ycoord=436217; stream
LDP123	stream/river	xcoord=52398.; ycoord=436223; stream
LDP124	stream/river	xcoord=52407.; ycoord=435940; stream
LDP125	stream/river	xcoord=52421.; ycoord=435912; stream
LDP126	stream/river	xcoord=52599.; ycoord=435874; stream
LDP324	stream/river	xcoord=51914.; ycoord=436284; stream
LDP325	stream/river	xcoord=51898.; ycoord=436286; stream
LDP333	stream/river	xcoord=52908.; ycoord=435746; 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
LDP041	stream/river	xcoord=51651.; ycoord=436077; stream
LDP042	stream/river	xcoord=51710.; ycoord=436148; stream
LDP043	stream/river	xcoord=51959.; ycoord=435621; stream
LDP044	stream/river	xcoord=51970.; ycoord=435613; stream
LDP045	stream/river	xcoord=51704.; ycoord=435796; stream
LDP046	stream/river	xcoord=51679.; ycoord=435710; stream
LDP047	stream/river	xcoord=51601.; ycoord=435868; stream
LDP048	stream/river	xcoord=51693.; ycoord=435750; stream
LDP055	stream/river	xcoord=51651.; ycoord=436077; stream
LDP056	stream/river	xcoord=51710.; ycoord=436148; stream
LDP057	stream/river	xcoord=51959.; ycoord=435621; stream
LDP058	stream/river	xcoord=51970.; ycoord=435613; stream
LDP059	stream/river	xcoord=51704.; ycoord=435796; stream
LDP060	stream/river	xcoord=51679.; ycoord=435710; stream
LDP061	stream/river	xcoord=51601.; ycoord=435868; stream
LDP062	stream/river	xcoord=51693.; ycoord=435750; stream
LDP192	stream/river	xcoord=52256.; ycoord=435486; stream
LDP193	stream/river	xcoord=52273.; ycoord=435500; stream
LDP194	stream/river	xcoord=52332.; ycoord=435463; stream
LDP195	stream/river	xcoord=52461.; ycoord=435426; stream
LDP196	stream/river	xcoord=52651.; ycoord=435577; stream
LDP197	stream/river	xcoord=52800.; ycoord=435586; stream
LDP201	stream/river	xcoord=51856.; ycoord=435962; stream
LDP202	stream/river	xcoord=51908.; ycoord=435983; stream
LDP207	stream/river	xcoord=52529.; ycoord=435696; stream
LDP208	stream/river	xcoord=52712.; ycoord=435657; stream
LDP209	stream/river	xcoord=52696.; ycoord=436084; stream
LDP210	stream/river	xcoord=52678.; ycoord=436131; stream
LDP211	stream/river	xcoord=52638.; ycoord=436140; stream
LDP212	stream/river	xcoord=52458.; ycoord=436240; stream
LDP213	stream/river	xcoord=52319.; ycoord=436290; stream
LDP214	stream/river	xcoord=52221.; ycoord=436321; stream
LDP215	stream/river	xcoord=52141.; ycoord=436264; stream
LDP216	stream/river	xcoord=52050.; ycoord=435568; stream
LDP217	stream/river	xcoord=52536.; ycoord=435498; stream
LDP218	stream/river	xcoord=52397.; ycoord=436212; stream
LDP219	stream/river	xcoord=52385.; ycoord=436217; stream
LDP220	stream/river	xcoord=52398.; ycoord=436223; stream
LDP221	stream/river	xcoord=52407.; ycoord=435940; stream
LDP222	stream/river	xcoord=52421.; ycoord=435912; stream
LDP223	stream/river	xcoord=52599.; ycoord=435874; stream
LDP240	stream/river	xcoord=51914.; ycoord=436284; stream
LDP241	stream/river	xcoord=51898.; ycoord=436285; stream
LDP242	stream/river	xcoord=52256.; ycoord=435486; stream
LDP243	stream/river	xcoord=52273.; ycoord=435500; stream
LDP244	stream/river	xcoord=52332.; ycoord=435463; stream
LDP245	stream/river	xcoord=52461.; ycoord=435426; stream
LDP246	stream/river	xcoord=52651.; ycoord=435577; stream
LDP247	stream/river	xcoord=52800.; ycoord=435586; stream
LDP251	stream/river	xcoord=51856.; ycoord=435962; stream
LDP252	stream/river	xcoord=51908.; ycoord=435983; stream
LDP257	stream/river	xcoord=52529.; ycoord=435696; stream
LDP258	stream/river	xcoord=52712.; ycoord=435657; stream
LDP259	stream/river	xcoord=52696.; ycoord=436084; stream
LDP260	stream/river	xcoord=52678.; ycoord=436131; stream
LDP261	stream/river	xcoord=52638.; ycoord=436140; stream
LDP262	stream/river	xcoord=52458.; ycoord=436240; stream
LDP263	stream/river	xcoord=52319.; ycoord=436290; stream
LDP264	stream/river	xcoord=52221.; ycoord=436321; stream
LDP265	stream/river	xcoord=52141.; ycoord=436264; stream
LDP266	stream/river	xcoord=52050.; ycoord=435568; stream
LDP267	stream/river	xcoord=52536.; ycoord=435498; stream
LDP268	stream/river	xcoord=52397.; ycoord=436212; stream
LDP269	stream/river	xcoord=52385.; ycoord=436217; stream
LDP270	stream/river	xcoord=52398.; ycoord=436223; stream
LDP271	stream/river	xcoord=52407.; ycoord=435940; stream
LDP272	stream/river	xcoord=52421.; ycoord=435912; stream
LDP273	stream/river	xcoord=52599.; ycoord=435874; stream
LDP287	stream/river	xcoord=51657.; ycoord=436314; stream
LDP290	stream/river	xcoord=51914.; ycoord=436284; stream
LDP291	stream/river	xcoord=51898.; ycoord=436286; stream
LDP352	stream/river	xcoord=52908.; ycoord=435746; stream
LDP360	stream/river	xcoord=52908.; ycoord=435746; 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.

Database Home

Tract name	Deposit type	Geology
Cascade Arc	porphyry copper	U.S. part of a continental margin arc that formed during subduction of the Pacific and Juan de Fuca plates beneath western North America
Western U.S. and Sonoran Desert Jurassic Arc	porphyry copper	U.S. and Mexican parts of a composite island-continental margin arc that formed during subduction of the Farallon Plate beneath western North America