San Francisco Bay from the air in May 2010 04

The Tiburon Peninsula is a landform of the

San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area Go ...

Marin County Marin County is a county located in the northwestern part of the San Francisco Bay Area of the U.S. state of California. As of the 2020 census, the population was 262,231. Its county seat and largest city is San Rafael. Marin County is acros ...

and is home to the

incorporated municipalities A municipal corporation is the legal term for a local government, local governing body, including (but not necessarily limited to) city, cities, county, counties, towns, townships, charter townships, villages, and boroughs. The term can also be use ...

of Tiburon,

Belvedere Belvedere (from Italian, meaning "beautiful sight") may refer to: Places Australia *Belvedere, Queensland, a locality in the Cassowary Coast Region Africa *Belvedere (Casablanca), a neighborhood in Casablanca, Morocco *Belvedere, Harare, Zim ...

, and a portion of

Corte Madera, California Corte Madera (; Spanish for "Chop Wood") is an incorporated town in Marin County, California. Corte Madera is located south of San Rafael, at an elevation of 39 feet (12 m). The population was 10,222 at the 2020 census. The town was named after ...

. Much of the peninsula is

unincorporated Unincorporated may refer to: * Unincorporated area, land not governed by a local municipality * Unincorporated entity, a type of organization * Unincorporated territories of the United States, territories under U.S. jurisdiction, to which Congress ...

, including portions of the north side and the communities of Paradise Cay and

Strawberry The garden strawberry (or simply strawberry; ''Fragaria × ananassa'') is a widely grown hybrid species of the genus '' Fragaria'', collectively known as the strawberries, which are cultivated worldwide for their fruit. The fruit is widely ap ...

Richardson Bay Richardson Bay (originally Richardson's Bay) is a shallow, ecologically rich arm of San Francisco Bay, managed under a Joint Powers Agency of four northern California cities. The Richardson Bay Sanctuary was acquired in the early 1960s by the N ...

separates the peninsula from the Marin County mainland.

Angel Island Angel Island may refer to: *Angel Island (California), historic site of the United States Immigration Station, Angel Island, and part of Angel Island State Park, in San Francisco Bay, California * Angel Island, Papua New Guinea * ''Angel Island'' (n ...

lies app. 1 mile south of the peninsula's southern tip. Much of the land area of the Tiburon Peninsula was part of a Spanish land grant originally given to the early Californian John Reed. A prominent feature of the Tiburon Peninsula is

Ring Mountain, Marin County Ring Mountain is an elevated landform on the Tiburon Peninsula in Marin County, California. This mountain was named for George E. Ring, who served as a Marin County Supervisor from 1895 to 1903. A number of rare and endangered flora inhabit R ...

, which forms the backbone of the peninsula and is the highest elevation of the peninsula. The Tiburon Peninsula is the location of a number of rare and

endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inva ...

flora species, and is also the site of ancient Native American

rock carving A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other descriptions ...

s. The mineral

lawsonite Lawsonite is a hydrous calcium aluminium sorosilicate mineral with formula CaAl2Si2O7(OH)2·H2O. Lawsonite crystallizes in the orthorhombic system in prismatic, often tabular crystals. Crystal twinning is common. It forms transparent to transluce ...

was first described from an occurrence on the Tiburon Peninsula.F Leslie Ransome (1895) ''On Lawsonite, a New Rock-forming Mineral from the Tiburon Peninsula, Marin County, California'', University of California Press Tiburon Peninsula as seen from Ring Mountain

Tiburon Peninsula as seen from Ring Mountain

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Landforms of Marin County, California Landforms of the San Francisco Bay Area Peninsulas of California Tiburon, California {{MarinCountyCA-geo-stub