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Penngrove, California
Penngrove is a census-designated place (CDP) in Sonoma County, California, United States, situated between the cities of Petaluma and Cotati, at the foot of the western flank of Sonoma Mountain. It is part of the North Bay subregion of the San Francisco Bay Area. The population was 2,522 at the 2010 census. The area is the site of a historic grove called Penn's Grove; it was formerly a freight station on the Northwestern Pacific Railroad and a center of egg and chicken farming. Geography Penngrove's downtown consists of Main Street, a street linking Old Redwood Highway to Adobe Road. Penngrove School is located at the corner of Adobe Road, where Main Street becomes Petaluma Hill Road. Lichau Creek flows southward through the town, paralleling the railway. The creek feeds into the Petaluma River, which flows to San Pablo Bay. Due to the Sonoma Mountain's ancient volcanism, Penngrove is rich with obsidian and petrified wood. Its soil is unique, composed mainly of clay-lik ...
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Census-designated Place
A census-designated place (CDP) is a concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counterparts of incorporated places, such as self-governing cities, towns, and villages, for the purposes of gathering and correlating statistical data. CDPs are populated areas that generally include one officially designated but currently unincorporated community, for which the CDP is named, plus surrounding inhabited countryside of varying dimensions and, occasionally, other, smaller unincorporated communities as well. CDPs include small rural communities, edge cities, colonias located along the Mexico–United States border, and unincorporated resort and retirement communities and their environs. The boundaries of any CDP may change from decade to decade, and the Census Bureau may de-establish a CDP after a period of study, then re-establish it some decades later. Most unin ...
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Northwestern Pacific Railroad
The Northwestern Pacific Railroad is a regional shortline railroad utilizing a stretch of the 271 mile mainline between Schellville and Windsor with freight and Sonoma–Marin Area Rail Transit (SMART) commuter trains. Formerly, it was a regional railroad primarily used for logging that served the entire North Coast of California, with a main line running from Schellville to Eureka, along with an additional portion of the line running from the Ignacio Wye to the edge of San Rafael. The "Southern End" of the line, including Schellville to Willits and from Ignacio to San Rafael is owned by SMART, while the "Northern End" was formally owned and managed by the now-dissolved North Coast Railroad Authority but is now saved for use in California's 2018 Great Redwood Trail Act, which repurposes the unused railroad right-of-way from Eureka to Willits for future use as the Great Redwood Trail. History In the late 1800s both the Southern Pacific Railroad (“SP”) and the Atchi ...
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Asian (U
Asian may refer to: * Items from or related to the continent of Asia: ** Asian people, people in or descending from Asia ** Asian culture, the culture of the people from Asia ** Asian cuisine, food based on the style of food of the people from Asia ** Asian (cat), a cat breed similar to the Burmese but in a range of different coat colors and patterns * Asii (also Asiani), a historic Central Asian ethnic group mentioned in Roman-era writings * Asian option, a type of option contract in finance * Asyan, a village in Iran See also * * * East Asia * South Asia * Southeast Asia * Asiatic (other) Asiatic refers to something related to Asia. Asiatic may also refer to: * Asiatic style, a term in ancient stylistic criticism associated with Greek writers of Asia Minor * In the context of Ancient Egypt, beyond the borders of Egypt and the cont ...
{{disambiguation ...
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Native American (U
Native Americans or Native American may refer to: Ethnic groups * Indigenous peoples of the Americas, the pre-Columbian peoples of North and South America and their descendants * Native Americans in the United States * Indigenous peoples in Canada ** First Nations in Canada, Canadian indigenous peoples neither Inuit nor Métis ** Inuit, an indigenous people of the mainland and insular Bering Strait, northern coast, Labrador, Greenland, and Canadian Arctic Archipelago regions ** Métis in Canada, peoples of Canada originating from both indigenous (First Nations or Inuit) and European ancestry * Indigenous peoples of Costa Rica * Indigenous peoples of Mexico * Indigenous peoples of South America ** Indigenous peoples in Argentina ** Indigenous peoples in Bolivia ** Indigenous peoples in Brazil ** Indigenous peoples in Chile ** Indigenous peoples in Colombia ** Indigenous peoples in Ecuador ** Indigenous peoples in Peru ** Indigenous peoples in Suriname ** Indigenous peoples in ...
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African American (U
African Americans (also referred to as Black Americans and Afro-Americans) are an ethnic group consisting of Americans with partial or total ancestry from sub-Saharan Africa. The term "African American" generally denotes descendants of enslaved Africans who are from the United States. While some Black immigrants or their children may also come to identify as African-American, the majority of first generation immigrants do not, preferring to identify with their nation of origin. African Americans constitute the second largest racial group in the U.S. after White Americans, as well as the third largest ethnic group after Hispanic and Latino Americans. Most African Americans are descendants of enslaved people within the boundaries of the present United States. On average, African Americans are of West/ Central African with some European descent; some also have Native American and other ancestry. According to U.S. Census Bureau data, African immigrants generally do not ...
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White (U
White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on television and computer screens is created by a mixture of red, blue, and green light. The color white can be given with white pigments, especially titanium dioxide. In ancient Egypt and ancient Rome, priestesses wore white as a symbol of purity, and Romans wore white togas as symbols of citizenship. In the Middle Ages and Renaissance a white unicorn symbolized chastity, and a white lamb sacrifice and purity. It was the royal color of the kings of France, and of the monarchist movement that opposed the Bolsheviks during the Russian Civil War (1917–1922). Greek and Roman temples were faced with white marble, and beginning in the 18th century, with the advent of neoclassical architecture, white became the most common color of new churches ...
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United States Census Bureau
The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the U.S. Department of Commerce and its director is appointed by the President of the United States. The Census Bureau's primary mission is conducting the U.S. census every ten years, which allocates the seats of the U.S. House of Representatives to the states based on their population. The bureau's various censuses and surveys help allocate over $675 billion in federal funds every year and it assists states, local communities, and businesses make informed decisions. The information provided by the census informs decisions on where to build and maintain schools, hospitals, transportation infrastructure, and police and fire departments. In addition to the decennial census, the Census Bureau continually conducts over 130 surveys and programs ...
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Rancho Petaluma Adobe
Rancho Petaluma Adobe is a historic ranch house in Sonoma County, California. It was built from adobe bricks in 1836 by order of Mariano Guadalupe Vallejo. It was the largest privately owned adobe structure built in California and is the largest example of the Monterey Colonial style of architecture in the United States. A section of the former ranch has been preserved by the Petaluma Adobe State Historic Park and it is both a California Historic Landmark and a National Historic Landmark. The Rancho Petaluma Adobe State Historic Park is located on Adobe Road on the east side of the present-day town of Petaluma, California. Description The Adobe was designed to function both as a headquarters of a working ranch and as a defensive structure against attack by the Russians then living on the California coast or by the borderland's native tribes. It consisted of two, two-story buildings surrounding an open courtyard of roughly . It was built using adobe bricks and hand-hewn redwood ...
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Adobe
Adobe ( ; ) is a building material made from earth and organic materials. is Spanish for ''mudbrick''. In some English-speaking regions of Spanish heritage, such as the Southwestern United States, the term is used to refer to any kind of earthen construction, or various architectural styles like Pueblo Revival or Territorial Revival. Most adobe buildings are similar in appearance to cob and rammed earth buildings. Adobe is among the earliest building materials, and is used throughout the world. Adobe architecture has been dated to before 5,100 B.C. Description Adobe bricks are rectangular prisms small enough that they can quickly air dry individually without cracking. They can be subsequently assembled, with the application of adobe mud to bond the individual bricks into a structure. There is no standard size, with substantial variations over the years and in different regions. In some areas a popular size measured weighing about ; in other contexts the size is weighi ...
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Petrified Wood
Petrified wood, also known as petrified tree (from Ancient Greek meaning 'rock' or 'stone'; literally 'wood turned into stone'), is the name given to a special type of ''fossilized wood'', the fossilized remains of terrestrial vegetation. ''Petrifaction'' is the result of a tree or tree-like plants having been replaced by stone via a mineralization process that often includes permineralization and replacement. The organic materials making up cell walls have been replicated with minerals (mostly silica in the form of opal, chalcedony, or quartz). In some instances, the original structure of the stem tissue may be partially retained. Unlike other plant fossils, which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. The petrifaction process occurs underground, when wood becomes buried in water-saturated sediment or volcanic ash. The presence of water reduces the availability of oxygen which inhibits ...
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Obsidian
Obsidian () is a naturally occurring volcanic glass formed when lava extrusive rock, extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. Obsidian is produced from felsic lava, rich in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. It is commonly found within the margins of rhyolite, rhyolitic lava flows known as obsidian flows. These flows have a high content of silicon dioxide, silica, granting them a high viscosity. The high viscosity inhibits atomic diffusion, diffusion of atoms through the lava, which inhibits the first step (nucleation) in the formation of mineral crystals. Together with rapid cooling, this results in a natural glass forming from the lava. Obsidian is hard, Brittleness, brittle, and amorphous; it therefore Fracture (mineralogy)#Conchoidal fracture, fractures with sharp edges. In the past, it was used to manufacture cutting and piercing tools, and it has been used experimentally as surgic ...
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San Pablo Bay
San Pablo Bay is a tidal estuary that forms the northern extension of San Francisco Bay in the East Bay and North Bay regions of the San Francisco Bay Area in northern California. Most of the Bay is shallow; however, there is a deep water channel approximately in the middle of the bay, which allows access to major ports in Sacramento, Stockton, Benicia, and Martinez; and other smaller ports on the Sacramento–San Joaquin River Delta. Geography San Pablo Bay was named after Rancho San Pablo, a Spanish land grant given to colonial Alta California settlers in 1815, on the bay at the site of the present-day city of San Pablo. The bay is approximately across and has an area of approximately . The bay receives the waters of the Sacramento and San Joaquin rivers, via Suisun Bay and the Carquinez Strait on its northeast end, and it connects to the Pacific Ocean via the San Francisco Bay on its southern end. The bay is heavily silted from the contributions of the two rivers, ...
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