HOME

TheInfoList



OR:

Bodega Head is a small
promontory A promontory is a raised mass of land that projects into a lowland or a body of water (in which case it is a peninsula). Most promontories either are formed from a hard ridge of rock that has resisted the erosive forces that have removed the so ...
on the Pacific coast of northern California in the United States. It is located in Sonoma County at , approximately northwest of San Francisco and approximately west of Santa Rosa. The peninsula, which is approximately long and wide, emerges from the coast to the south. It shelters the shallow, sandy
Bodega Bay Bodega Bay ( es, Bahía Bodega) is a shallow, rocky inlet of the Pacific Ocean on the coast of northern California in the United States. It is approximately across and is located approximately northwest of San Francisco and west of Santa Ros ...
and the inner portion known as Bodega Harbor.
Sonoma Coast State Beach Sonoma Coast State Park is a State of California property in Sonoma County consisting of public access use on lands adjoining the Pacific Ocean. This extent of beach runs from a coastal point about north of Jenner and continues for approximatel ...
comprises beaches and dunes along the south side of the promontory. The
University of California, Davis The University of California, Davis (UC Davis, UCD, or Davis) is a public land-grant research university near Davis, California. Named a Public Ivy, it is the northernmost of the ten campuses of the University of California system. The inst ...
runs an ongoing
marine biology Marine biology is the scientific study of the biology of marine life, organisms in the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifie ...
program at the Bodega Marine Laboratory. The laboratory is located on the grounds of
Bodega Marine Reserve Bodega Marine Reserve is a nature reserve and marine reserve on the coast of northern California, located in the vicinity of the Bodega Marine Laboratory on Bodega Head. It is a unit of the University of California Natural Reserve System, admini ...
, which is part of the UC Natural Reserve System. The peninsula is considered a prime spot to observe the migration of
whale Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. As an informal and colloquial grouping, they correspond to large members of the infraorder Cetacea, i.e. all cetaceans apart from dolphins and ...
s. It is also one of the three points of the Red Triangle, a major feeding ground for
great white sharks The great white shark (''Carcharodon carcharias''), also known as the white shark, white pointer, or simply great white, is a species of large mackerel shark which can be found in the coastal surface waters of all the major oceans. It is not ...
. A series of trails are a popular destination for recreational
hiking Hiking is a long, vigorous walk, usually on trails or footpaths in the countryside. Walking for pleasure developed in Europe during the eighteenth century.AMATO, JOSEPH A. "Mind over Foot: Romantic Walking and Rambling." In ''On Foot: A His ...
.
Bodega Head State Marine Reserve & Bodega Head State Marine Conservation Area Bodega Head State Marine Reserve (SMR) and Bodega Head State Marine Conservation Area (SMCA) are two adjoining marine protected areas off Bodega Bay in Sonoma County on California’s north-central coast. The combined area of these marine protect ...
protect area waters. Like underwater parks, these marine protected areas help conserve ocean wildlife and marine ecosystems. The peninsula was probably inhabited by the
Coast Miwok Coast Miwok are an indigenous people that was the second-largest group of Miwok people. Coast Miwok inhabited the general area of modern Marin County and southern Sonoma County in Northern California, from the Golden Gate north to Duncans Po ...
people before the arrival of
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located enti ...
ans. Campbell Cove, on the east side of the promontory, is a candidate for Sir Francis Drake's 1579 landing site.


Geology

Bodega Head lies just on the west side of the
San Andreas Fault The San Andreas Fault is a continental transform fault that extends roughly 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) ...
, which runs between the base of the promontory and the mainland. During the
1906 San Francisco earthquake At 05:12 Pacific Standard Time on Wednesday, April 18, 1906, the coast of Northern California was struck by a major earthquake with an estimated moment magnitude of 7.9 and a maximum Mercalli intensity of XI (''Extreme''). High-intensity s ...
, the promontory shifted approximately , displacing the harbor to the north relative to the mainland.
Geologically Geology () is a branch of natural science concerned with Earth and other Astronomical object, astronomical objects, the features or rock (geology), rocks of which it is composed, and the processes by which they change over time. Modern geology ...
, the rocks of Bodega Head differ greatly from those on the mainland just to the east. Whereas the rocks of Bodega Head are exposed continental
granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies und ...
, the mainland rocks are of oceanic origin from the
Franciscan Complex The Franciscan Complex or Franciscan Assemblage is a geologic term for a late Mesozoic terrane of heterogeneous rocks found throughout the California Coast Ranges, and particularly on the San Francisco Peninsula. It was named by geologist An ...
. Bodega Head is the northern tip of a vast geologic province known as the
Salinian Block The Salinian Block or Salinian terrane is a geologic terrane which lies west of the main trace of the San Andreas Fault system in California. It is bounded on the south by the Big Pine Fault in Ventura County and on the west by the Nacimiento Fau ...
whose core is of the same origins as the core of the
Sierra Nevada Mountains The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primaril ...
. The block was torn off the continent as the San Andreas Fault came into existence about 20 million years ago, and was transported northward hundreds of miles. Other nearby examples of the Salinian Block are the
Point Reyes Peninsula Point Reyes (, meaning "Point of the Kings") is a prominent cape and popular Northern California tourist destination on the Pacific coast. Located in Marin County, it is approximately west-northwest of San Francisco. The term is often applied t ...
and the
Farallon Islands The Farallon Islands, or Farallones (from the Spanish ''farallón'' meaning "pillar" or "sea cliff"), are a group of islands and sea stacks in the Gulf of the Farallones, off the coast of San Francisco, California, United States. The island ...
. A controversial attempt by
Pacific Gas & Electric Company The Pacific Gas and Electric Company (PG&E) is an American investor-owned utility (IOU). The company is headquartered in the Pacific Gas & Electric Building, in San Francisco, California. PG&E provides natural gas and electricity to 5.2 millio ...
to construct a nuclear power plant on the peninsula was thwarted in 1964 due to environmental concerns and the susceptibility of the site to
earthquake An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from ...
s.


See also

*
Point Reyes Point Reyes (, meaning "Point of the Kings") is a prominent cape and popular Northern California tourist destination on the Pacific coast. Located in Marin County, it is approximately west-northwest of San Francisco. The term is often applied t ...


References


External links

{{Commons category, Bodega Head
P.G. & E. Controversy in the 1950s
Headlands of California Landforms of Sonoma County, California Bodega Bay