Franciscan Complex
E95610
The Franciscan Complex is a chaotic assemblage of deformed oceanic and continental rocks in coastal California, formed in a subduction zone setting and prominently exposed in ranges such as the Santa Lucia Range.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Franciscan Complex canonical | 6 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
accretionary complex
ⓘ
geologic formation ⓘ mélange ⓘ tectonostratigraphic terrane ⓘ |
| age |
Cretaceous
ⓘ
Late Jurassic ⓘ early Cenozoic ⓘ |
| associatedWith |
Farallon Plate
ⓘ
North American Plate ⓘ |
| containsFossilsOf |
deep‑marine fauna
ⓘ
radiolaria ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| deformation |
folded
ⓘ
intensely deformed ⓘ strongly faulted ⓘ |
| formedBy | subduction of oceanic lithosphere beneath continental margin ⓘ |
| lithology |
basalt
ⓘ
blueschist ⓘ chert ⓘ eclogite ⓘ greenstone ⓘ greywacke sandstone ⓘ high‑pressure metamorphic rocks ⓘ serpentinite ⓘ shale ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Coastal Ranges ⓘ
surface form:
California Coast Ranges
Diablo Range ⓘ Marin County ⓘ San Francisco Bay Area ⓘ Santa Lucia Range ⓘ coastal California ⓘ Northern California ⓘ
surface form:
northern California
western margin of North America ⓘ |
| metamorphicGrade | high‑pressure low‑temperature ⓘ |
| namedAfter | Franciscan friars of California missions ⓘ |
| overlies | Coast Range Ophiolite ⓘ |
| significance |
classic example of an accretionary prism complex
ⓘ
record of Mesozoic subduction along western North America ⓘ |
| structuralStyle |
chaotic assemblage
ⓘ
mélange with tectonic blocks in sheared matrix ⓘ |
| studiedIn |
sedimentology
ⓘ
structural geology ⓘ tectonics ⓘ |
| tectonicSetting |
accretionary prism
ⓘ
subduction zone ⓘ |
| underlies | Great Valley Group ⓘ |
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.