Coordinates: 37°55′54″N122°41′20″W / 37.93167°N 122.68889°W [1]
A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.
Pike County Gulch is a coastal valley in Marin County, California, United States, [1] which is associated with a small stream. It is located between Wilkins Gulch (to the northwest) and Audubon Canyon (to the southeast).
Marin County is a county located in the San Francisco Bay Area of the U.S. state of California. As of the 2010 census, the population was 252,409. Its county seat is San Rafael. Marin County is included in the San Francisco-Oakland-Hayward, CA Metropolitan Statistical Area across the Golden Gate Bridge from San Francisco.
The United States of America (USA), commonly known as the United States or America, is a country comprising 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico. The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world's 17 megadiverse countries.
Wilkins Gulch is a valley in western Marin County, California, United States, located northwest of Pike County Gulch. It is associated with a small stream.
The stream descends the western slope of the Bolinas Ridge, crosses State Route 1 about 3 miles (5 km) north of Stinson Beach, California, and drains into the northern tip of Bolinas Lagoon. [2]
Bolinas Ridge is a north-south ridge in southwestern Marin County, California. Much of the western side of the ridge is protected parkland in the Golden Gate National Recreation Area, and the eastern side is watershed lands of the Marin Municipal Water District.
California State Route 1 (SR 1) is a major north–south state highway that runs along most of the Pacific coastline of the U.S. state of California. At a total of just over 659 miles (1,061 km), it is the longest state route in California. SR 1 has several portions designated as either Pacific Coast Highway (PCH), Cabrillo Highway, Shoreline Highway, or Coast Highway. Its southern terminus is at Interstate 5 (I-5) near Dana Point in Orange County and its northern terminus is at U.S. Route 101 (US 101) near Leggett in Mendocino County. SR 1 also at times runs concurrently with US 101, most notably through a 54-mile (87 km) stretch in Ventura and Santa Barbara counties, and across the Golden Gate Bridge.
Stinson Beach is a census-designated place in Marin County, California, on the west coast of the United States. Stinson Beach is located 2.5 miles (4 km) east-southeast of Bolinas, at an elevation of 26 feet. The population of the Stinson Beach CDP was 632 at the 2010 census.
The gulch contains an ore vein 4 feet (1.22 m) thick containing pyrite, located a mile (1.6 km) south of the Union Gulch Mine. [3]
The mineral pyrite (/ˈpaɪraɪt/), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 (iron(II) disulfide). Pyrite is considered the most common of the sulfide minerals.
