About: Franciscan Complex

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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 Andrew Lawson, who also named the San Andreas fault that defines the western extent of the assemblage.

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  • Der Franciscan-Komplex (auch Franciscan Formation, Franciscan Group, Franciscan Assemblage, Franciscan Series) ist eine aus sehr verschiedenartigen Gesteinen aufgebaute, mehr als tausend Kilometer lange Gesteinseinheit an der Westküste von Nordamerika von Oregon im Norden bis nach Südkalifornien, die auch große Teile der San-Francisco-Halbinsel aufbaut. Seinen Namen verdankt das Terrane dem Geologen Andrew Cowper Lawson, der auch die San-Andreas-Verwerfung benannte, die den Komplex durchzieht. (de)
  • 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 Andrew Lawson, who also named the San Andreas fault that defines the western extent of the assemblage. The Franciscan Complex is dominated by greywacke sandstones, shales and conglomerates which have experienced low-grade metamorphism. Other important lithologies include chert, basalt, limestone, serpentinite, and high-pressure, low-temperature metabasites (blueschists and eclogites) and meta-limestones. Fossils like radiolaria are found in chert beds of the Franciscan Complex. These fossils have been used to provide age constraints on the different terranes that constitute the Franciscan. The mining opportunities within the Franciscan are restricted to deposits of cinnabar and limestone. The outcrops of the formation have a very large range, extending from Douglas County, Oregon to Santa Barbara County, California. Franciscan-like formations may be as far south as Santa Catalina Island. The formation lends its name to the term describing high-pressure regional metamorphic facies, the Franciscan facies series. (en)
  • Un gradient franciscain, ou métamorphisme haute pression-basse température de gradient prograde (parfois aussi appelé métamorphisme franciscain), est un terme géologique désignant un assemblage hétérogène de roches typique de la péninsule de San Francisco ou de ses environs. Le terme de Franciscan Assemblage est dû au géologue Andrew Lawson, qui nomma également la faille de San Andreas qui retient ce gradient. * Portail de la géologie (fr)
  • 藩市杂岩（英語：Franciscan complex）是指在美國加利福尼亚州海岸山脉的混杂沉积（英語：melange）。它的組成以輕度变质的杂砂岩（英語：graywacke）、页岩和砾岩为主，並夾有燧石、玄武岩、石灰岩、蛇纹岩，以及高压、低温变质的蓝片岩和榴辉岩。藩市杂岩基本是由变质和变形岩石的组合，它的成因与北美西海岸的中生代东倾俯冲带有关。当时加利福尼亚大陆边缘存在一条中生代深海海沟。这条海沟是中生代的法拉隆（英語：Farallon）洋壳板块，向北美大陆板块俯冲造成的。首先洋底玄武岩和沉积物隨洋壳板块向下俯冲。后又被仰冲到大陆板块下方，这导致大范围变形，产生逆冲断层和褶皱，引起高压-低温区域变质作用。 (zh)
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  • 5505662 (xsd:integer)
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dbp:age
  • Late Jurassic to Late Cretaceous (en)
dbp:caption
  • Chevron folds in ribbon chert of the Marin Headlands, California. Geologist Christie Rowe for scale. (en)
dbp:country
  • United States (en)
dbp:name
  • Franciscan Complex (en)
dbp:namedfor
  • San Francisco, California (en)
dbp:otherlithology
dbp:overlies
  • basement; Coast Range Ophiolite in some areas (en)
dbp:period
  • Late Cretaceous (en)
dbp:prilithology
  • schist , sandstone, basalt, greywackes (en)
dbp:region
  • California Coast Ranges, northern Transverse Ranges (en)
dbp:type
  • varied; primarily metamorphic , but also sedimentary, igneous and high-pressure metamorphic (en)
dbp:underlies
  • various (en)
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rdfs:comment
  • Der Franciscan-Komplex (auch Franciscan Formation, Franciscan Group, Franciscan Assemblage, Franciscan Series) ist eine aus sehr verschiedenartigen Gesteinen aufgebaute, mehr als tausend Kilometer lange Gesteinseinheit an der Westküste von Nordamerika von Oregon im Norden bis nach Südkalifornien, die auch große Teile der San-Francisco-Halbinsel aufbaut. Seinen Namen verdankt das Terrane dem Geologen Andrew Cowper Lawson, der auch die San-Andreas-Verwerfung benannte, die den Komplex durchzieht. (de)
  • Un gradient franciscain, ou métamorphisme haute pression-basse température de gradient prograde (parfois aussi appelé métamorphisme franciscain), est un terme géologique désignant un assemblage hétérogène de roches typique de la péninsule de San Francisco ou de ses environs. Le terme de Franciscan Assemblage est dû au géologue Andrew Lawson, qui nomma également la faille de San Andreas qui retient ce gradient. * Portail de la géologie (fr)
  • 藩市杂岩（英語：Franciscan complex）是指在美國加利福尼亚州海岸山脉的混杂沉积（英語：melange）。它的組成以輕度变质的杂砂岩（英語：graywacke）、页岩和砾岩为主，並夾有燧石、玄武岩、石灰岩、蛇纹岩，以及高压、低温变质的蓝片岩和榴辉岩。藩市杂岩基本是由变质和变形岩石的组合，它的成因与北美西海岸的中生代东倾俯冲带有关。当时加利福尼亚大陆边缘存在一条中生代深海海沟。这条海沟是中生代的法拉隆（英語：Farallon）洋壳板块，向北美大陆板块俯冲造成的。首先洋底玄武岩和沉积物隨洋壳板块向下俯冲。后又被仰冲到大陆板块下方，这导致大范围变形，产生逆冲断层和褶皱，引起高压-低温区域变质作用。 (zh)
  • 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 Andrew Lawson, who also named the San Andreas fault that defines the western extent of the assemblage. (en)
rdfs:label
  • Franciscan-Komplex (de)
  • Franciscan Complex (en)
  • Gradient franciscain (fr)
  • 藩市杂岩 (zh)
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