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Petrified Forest (California)
The Petrified Forest is a petrified forest located in Sonoma County, California, in the United States. It is the only petrified forest in California from the Pliocene. It also has the largest petrified trees in the world. The forest is now open to the public to visit after restoration from damage caused by the Napa and Sonoma fires of 2017. History Geological history Approximately 3.4 million years ago, a volcano eruption at Mount St. Helena caused the trees to become petrified in a process that took thousands of years to complete. Diane Erwin, from the University of California, Berkeley, stated in 2012 that the petrified forest shows that redwood trees were once located further inland, unlike their contemporary descendants that are primarily coastal. The Palynological Society calls the forest "one of the finest examples in the world of an ancient forest." 19th century The forest was discovered in 1870 by Othniel Charles Marsh, who determined that the petrified trees were '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonoma County, California
Sonoma County ( ) is a county located in the U.S. state of California. As of the 2020 United States census, its population was 488,863. Its seat of government and largest city is Santa Rosa. Sonoma County comprises the Santa Rosa-Petaluma Metropolitan Statistical Area, which is part of the San Jose-San Francisco- Oakland, CA Combined Statistical Area. It is the northernmost county in the nine-county San Francisco Bay Area region. In California's Wine Country region, which also includes Napa, Mendocino, and Lake counties, Sonoma County is the largest producer. It has nineteen approved American Viticultural Areas and more than 350 wineries. The voters have twice approved open space initiatives that have provided funding for public acquisition of natural areas, preserving forested areas, coastal habitat, and other open space. More than 8.4 million tourists visit each year, spending more than $1 billion in 2016. Sonoma County is a leading producer of hops, grapes, prunes, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Louis Stevenson
Robert Louis Stevenson (born Robert Lewis Balfour Stevenson; 13 November 1850 – 3 December 1894) was a Scottish novelist, essayist, poet and travel writer. He is best known for works such as ''Treasure Island'', ''Strange Case of Dr Jekyll and Mr Hyde'', ''Kidnapped (novel), Kidnapped'' and ''A Child's Garden of Verses''. Born and educated in Edinburgh, Stevenson suffered from serious bronchial trouble for much of his life but continued to write prolifically and travel widely in defiance of his poor health. As a young man, he mixed in London literary circles, receiving encouragement from Sidney Colvin, Andrew Lang, Edmund Gosse, Leslie Stephen and William Ernest Henley, W. E. Henley, the last of whom may have provided the model for Long John Silver in ''Treasure Island''. In 1890, he settled in Samoa where, alarmed at increasing European and American influence in the Polynesia, South Sea islands, his writing turned from Romance (literary fiction), romance and adven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Volcanism
The Eocene ( ) is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petrified Forests
Petrified wood (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 or volcanic ash. The presence of water reduces the availability of oxygen which inhibits aerobic decomposition by bacteria and fungi. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parks In Sonoma County, California
A park is an area of natural, semi-natural or planted space set aside for human enjoyment and recreation or for the protection of wildlife or natural habitats. Urban parks are green spaces set aside for recreation inside towns and cities. National parks and country parks are green spaces used for recreation in the countryside. State parks and provincial parks are administered by sub-national government states and agencies. Parks may consist of grassy areas, rocks, soil and trees, but may also contain buildings and other artifacts such as monuments, fountains or playground structures. Many parks have fields for playing sports such as baseball and football, and paved areas for games such as basketball. Many parks have trails for walking, biking and other activities. Some parks are built adjacent to bodies of water or watercourses and may comprise a beach or boat dock area. Urban parks often have benches for sitting and may contain picnic tables and barbecue grills. The largest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of California, Berkeley
The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a Public university, public Land-grant university, land-grant research university in Berkeley, California, United States. Founded in 1868 and named after the Anglo-Irish philosopher George Berkeley, it is the state's first land-grant university and is the founding campus of the University of California system. Berkeley has an enrollment of more than 45,000 students. The university is organized around fifteen schools of study on the same campus, including the UC Berkeley College of Chemistry, College of Chemistry, the UC Berkeley College of Engineering, College of Engineering, UC Berkeley College of Letters and Science, College of Letters and Science, and the Haas School of Business. It is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral Universities – Very high research activity". Lawrence Berkeley National Laboratory was originally founded as par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollen
Pollen is a powdery substance produced by most types of flowers of seed plants for the purpose of sexual reproduction. It consists of pollen grains (highly reduced Gametophyte#Heterospory, microgametophytes), which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametophytes during the process of their movement from the stamens to the pistil of flowering plants, or from the male Conifer cone, cone to the female cone of gymnosperms. If pollen lands on a compatible pistil or female cone, it Germination, germinates, producing a pollen tube that transfers the sperm to the ovule containing the female gametophyte. Individual pollen grains are small enough to require magnification to see detail. The study of pollen is called palynology and is highly useful in paleoecology, paleontology, archaeology, and Forensic science, forensics. Pollen in plants is used for transferring Ploidy#Haploid and monoploid, haploid male genetic ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Historical Landmarks
A California Historical Landmark (CHL) is a building, structure, site, or place in the U.S. state of California that has been determined to have statewide historical landmark significance. Criteria Historical significance is determined by meeting at least one of these criteria: # The first, last, only, or most significant of its type in the state or within a large geographic region ( Northern, Central, or Southern California); # Associated with an individual or group having a profound influence on the history of California; or # An outstanding example of a period, style, architectural movement or construction; or is the best surviving work in a region of a pioneer architect, designer, or master builder. Other designations California Historical Landmarks numbered 770 and higher are automatically listed in the California Register of Historical Resources. A site, building, feature, or event that is of local (city or county) significance may be designated as a California Point of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Silverado Squatters
''The Silverado Squatters'' (1883) is a travel memoir by Robert Louis Stevenson of his two-month honeymoon trip with Fanny Vandegrift (and her son Lloyd Osbourne) to Napa Valley, California, in 1880. Background In July 1879, Stevenson received word that his future American wife's divorce was almost complete, but that she was seriously ill. He left Scotland right away and travelled to meet her in Monterey, California, (his trip detailed in '' The Amateur Emigrant'' (1894) and ''Across the Plains'' (1892)). Broken financially, suffering from a lifelong fibrinous bronchitis condition, and with his writing career at a dead end, he was nursed back to health by his doctor, his nurse, and his future wife, while living briefly in Monterey, San Francisco, and Oakland. His father having provided money to help, on May 19, 1880, he married the Indianapolis native, whom he had first met in France in 1875, soon after the events of ''An Inland Voyage''. Still too weak to undertake the journ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pine Tree
A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. ''World Flora Online'' accepts 134 species-rank taxa (119 species and 15 nothospecies) of pines as current, with additional synonyms, and ''Plants of the World Online'' 126 species-rank taxa (113 species and 13 nothospecies), making it the largest genus among the conifers. The highest species diversity of pines is found in Mexico. Pines are widely distributed in the Northern Hemisphere; they occupy large areas of boreal forest, but are found in many habitats, including the Mediterranean Basin, and dry tropical forests in southeast Asia and Central America. Wood from pine trees is one of the most extensively used types of timber, and some pines are widely used as Christmas trees. Description Pine trees are evergreen, coniferous resinous trees (or, rarely, shrubs) growing tall, with the majority of species reaching tall. The smalle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calistoga, California
Calistoga (Wappo language, Wappo: ''Nilektsonoma'') is a city in Napa County, California, United States. Located in the North Bay (San Francisco Bay Area), North Bay region of the San Francisco Bay Area, the city had a population of 5,228 as of the 2020 United States census, 2020 census. Calistoga was founded in 1868 when the California Pacific Railroad was built, establishing the town as a tourist destination for its Calistoga Spa Hot Springs, Calistoga Hot Springs. Today, Calistoga continues as a popular tourist destination in Wine Country, owing to its vineyards and historic landmarks. History The Upper Napa Valley was once the home of a significant population of Indigenous People, called the Wappo, during the Spanish colonial era of the late 18th century. With abundant oak trees providing acorns as a food staple and the natural hot springs as a healing ground Calistoga (Wappo language, Wappo: ''Nilektsonoma'', meaning "Chicken Hawk Place") was the site of several villages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sequoia (genus)
''Sequoia'' is a genus of redwood coniferous trees in the subfamily Sequoioideae of the family Cupressaceae. The only extant species of the genus is '' Sequoia sempervirens'' in the Northern California coastal forests ecoregion of Northern California and Southwestern Oregon in the United States. The two other genera in the subfamily Sequoioideae, '' Sequoiadendron'' and '' Metasequoia'', are closely related to ''Sequoia''. It includes the tallest trees, as well as the heaviest, in the world. Several extinct species have been named from fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...s, including ''Sequoia affinis ''(Western North America) and ''Sequoia magnifica'' (petrified wood from the Yellowstone National Park area). Etymology The name ''Sequoia'' was first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
