Trinidad Head (

Yurok The Yurok (Karuk language: Yurúkvaarar / Yuru Kyara - "downriver Indian; i.e. Yurok Indian") are an Indigenous people from along the Klamath River and Pacific coast, whose homelands are located in present-day California stretching from Trinidad ...

: ''Chuerewa' '' ) is a rocky promontory surrounded by

sea stacks A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind and water, processes of coastal geomorphology ...

sheltering Trinidad Harbor, adjacent to the town of

Trinidad Trinidad is the larger and more populous of the two major islands of Trinidad and Tobago. The island lies off the northeastern coast of Venezuela and sits on the continental shelf of South America. It is often referred to as the southernmos ...

in Humboldt County, California, USA, designated as

California Historical Landmark A California Historical Landmark (CHL) is a building, structure, site, or place in California that has been determined to have statewide historical landmark significance. Criteria Historical significance is determined by meeting at least one of ...

#146.

History

On June 9, 1775, two Spanish Naval explorers,

Bruno de Heceta Bruno de Heceta (Hezeta) y Dudagoitia (1743–1807) was a Spanish Basque explorer of the Pacific Northwest. Born in Bilbao of an old Basque family, he was sent by the Viceroy of New Spain, Antonio María Bucareli y Ursúa, to explore the area nort ...

and

Juan Francisco de la Bodega y Quadra Juan Francisco de la Bodega y Quadra (22 May 1743 – 26 March 1794) was a Spanish Criollo naval officer operating in the Americas. Assigned to the Pacific coast Spanish Naval Department base at San Blas, in Viceroyalty of New Spain (present ...

anchored in Trinidad Bay. Two days later, on

Trinity Sunday Trinity Sunday is the first Sunday after Pentecost in the Western Christian liturgical calendar, and the Sunday of Pentecost in Eastern Christianity. Trinity Sunday celebrates the Christian doctrine of the Trinity, the three Persons of God: th ...

, June 11, 1775, Trinidad Head was claimed for

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

in the name of

Charles III Charles III (Charles Philip Arthur George; born 14 November 1948) is King of the United Kingdom and the 14 other Commonwealth realms. He was the longest-serving heir apparent and Prince of Wales and, at age 73, became the oldest person t ...

by Heceta, his men and two

Franciscan , image = FrancescoCoA PioM.svg , image_size = 200px , caption = A cross, Christ's arm and Saint Francis's arm, a universal symbol of the Franciscans , abbreviation = OFM , predecessor = , ...

fathers who erected a cross on the summit. When Sebastian Rodriguez Cermeno, Captain of the Portuguese ship "San Augustin," discovered and entered the Trinidad Bay in November of 1595, he did not anchor for fear of hitting submerged rocks. Over the next 75 years, Spanish,

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...

n and

British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

ships landed at Trinidad Head for sea otters, fresh water and refuge from storms. The harbor and Trinidad Head were mapped as part of A.D. Bache's

United States Coast Survey United may refer to: Places * United, Pennsylvania, an unincorporated community * United, West Virginia, an unincorporated community Arts and entertainment Films * ''United'' (2003 film), a Norwegian film * ''United'' (2011 film), a BBC Two f ...

under the direction of Lieutenant Commander William P. McArthur. Much of Trinidad Head was transferred to the city of Trinidad in 1983. The came with the condition that the property be maintained for public recreation. The southerly of the promontory containing the lighthouse are owned by the Bureau of Land Management (BLM) in 2014. In January 2017, Congress added Trinidad Head to the onshore acres of the California Coastal National Monument. President

Barack Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, Obama was the first African-American president of the ...

used his executive power under the 1906 Antiquities Act to designate this site as a unit of the National Monument.

Geology

Trinidad Head is composed of

metamorphosed Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causi ...

gabbro Gabbro () is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro is ch ...

embedded in the surrounding Franciscan

melange Melange comes from the French meaning of a "mixture" or "medley". It may also refer to: *Melange (fictional drug), in Frank Herbert's ''Dune'' series novels * Mélange (rocket fuel component) *Mélange, a type of rock with block-in-matrix structur ...

, topped with

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...

sands and gravels.

Observatories

*The Trinidad Head Lighthouse was built 1871 and remains in operation. *

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the US federal government responsible for the civil List of government space agencies, space program ...

's Advanced Global Atmospheric Gases Experiment (AGAGE) began observations of key

ozone Ozone (), or trioxygen, is an inorganic molecule with the chemical formula . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope , breaking down in the lo ...

depleting substances and

greenhouse gases A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor (), carbon dioxide (), methane ...

at Trinidad Head in 1995. The site was updated in May 2005 with a system which measures more than 40 trace gases involved in stratospheric ozone depletion,

climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...

, and

air quality Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types ...

. *Trinidad Head Observatory of the

National Oceanic and Atmospheric Administration The National Oceanic and Atmospheric Administration (abbreviated as NOAA ) is an United States scientific and regulatory agency within the United States Department of Commerce that forecasts weather, monitors oceanic and atmospheric conditio ...

began operation in 2002, monitoring regional and global

meteorology Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting. The study of meteorology dates back millennia, though significant progress in meteorology did no ...

Management

The BLM manages the facility cooperatively with the City of Trinidad, the Trinidad Rancheria, the Trinidad Museum Society and the

Yurok Tribe The Yurok (Karuk language: Yurúkvaarar / Yuru Kyara - "downriver Indian; i.e. Yurok Indian") are an Indigenous people from along the Klamath River and Pacific coast, whose homelands are located in present-day California stretching from Trinida ...

. Hiking trails were established by the city in 1984.

References

{{Authority control Geology of California

Landforms of Humboldt County, California