Olema Valley is a gorge formed by the San Andreas Fault in rural west Marin County, Northern California. The valley runs from the southern end of Tomales Bay through Point Reyes Station, the town of Olema, and Dogtown, to the Bolinas Lagoon, which lies between Bolinas and Stinson Beach.It is part of the Golden Gate National Recreation Area.
The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). The fault divides into three segments, each with different characteristics and a different degree of earthquake risk. The slip rate along the fault ranges from 20 to 35 mm /yr.
West Marin is the largest rural region of Marin County, California.
Northern California is the northern portion of the U.S. state of California. Spanning the state's northernmost 48 counties its main population centers include the San Francisco Bay Area, the Greater Sacramento area, and the Metropolitan Fresno area. Northern California also contains redwood forests, along with the Sierra Nevada, including Yosemite Valley and part of Lake Tahoe, Mount Shasta, and most of the Central Valley, one of the world's most productive agricultural regions.
Bolinas Bay is a small bay, approximately 5 miles (8 km) wide, on the Pacific coast of California in the United States. It is in Marin County, north of the Golden Gate, approximately 15 miles (25 km) northwest of San Francisco. The town of Bolinas is at its shore.
Bolinas Lagoon is a tidal estuary, approximately 1,100 acres (4.5 km2) in area, located in the West Marin region of Marin County, California, United States, adjacent to the town of Bolinas. It is a part of the Greater Farallones National Marine Sanctuary and is considered to be among the possible landing spots of Sir Francis Drake on the west coast of North America in 1579.
Area codes 415 and 628 are California telephone area codes for San Francisco and its northern suburbs in Marin County, and the northeast corner of San Mateo County.
The Marin-Bolinas Botanical Gardens are botanical gardens specializing in succulents, located in Bolinas, California, United States. They are open to the public on weekends.
The Tamalpais Union High School District or TUHSD provides high school education to students residing in ten elementary districts in central and southern Marin County, California and parts of West Marin. The headquarters are on the property of Redwood High School in Larkspur, California.
Bolinas-Stinson Union School District is a public school district in Marin County, California, with offices in Bolinas, California, USA. As of the 20017-18 school year, the District had 91 students at its Bolinas campus.
Dogtown is an unincorporated community in the rural West Marin region of coastal Marin County, California in the San Francisco Bay Area's North Bay. It lies at an elevation of 187 feet. With a population of 30, the town is located beside the Golden Gate National Recreation Area and Point Reyes National Seashore, in the Olema Valley west of the Bolinas Ridge mountain range.
Copper Mine Gulch is a valley in Marin County, California, United States, which is associated with a small stream.
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.
Pike County Gulch is a coastal valley in Marin County, California, United States, which is associated with a small stream. It is located between Wilkins Gulch and Audubon Canyon.
Morses Gulch is a coastal valley in Marin County, California, United States.
McKinnan Gulch is a valley in Marin County, California, United States.
Stinson Gulch is a valley in Marin County, California, United States which is associated with a small stream.
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.
Pine Gulch Creek is a 7.6-mile-long (12.2 km) south-flowing stream in western Marin County, California, United States which empties into Bolinas Lagoon.
Duxbury Reef State Marine Conservation Area (SMCA) is a marine protected area located about 1 mile (2 km) west of Bolinas in Marin County on California’s north central coast. This marine protected area covers 0.66 square miles (1.7 km2). Duxbury Reef SMCA prohibits the take of all living marine resources, except the recreational take of finfish from shore only and the recreational take of abalone.
Rancho Tomales y Baulines was a 9,468-acre (38.32 km2) Mexican land grant in present day Marin County, California, given in 1836 by Governor Nicolás Gutiérrez to Rafael Garcia. The grant extended south from Point Reyes Station along the Olema Valley and encompassed present day Olema and Garcia.
Rancho Las Baulines was a 8,911-acre (36.06 km2) Mexican land grant in present-day Marin County, California, given in 1846 by Governor Pío Pico to Gregorio Briones. The grant extended around Bolinas Lagoon and encompassed present-day Stinson Beach and Bolinas.
The 1971 San Francisco Bay oil spill occurred when two Standard Oil Company of California tankers, the Arizona Standard and the Oregon Standard, collided on January 19, 1971, in the San Francisco Bay. The resulting 800,000 gallon spill, the largest in Bay Area history, threatened sensitive natural habitats both inside and outside the bay, including the Bolinas Lagoon, and contributed to the growth of activism against pollution, after thousands of bay area residents volunteered to clean up beaches and rescue oil soaked birds. A number of environmental organizations had their origins in the spill cleanup. Standard Oil spent more than $1 million in the clean-up.
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.
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