The Maria fold and thrust belt (MFTB) is a portion of the North American Cordillera orogen in which geological structures accommodate roughly north–south to northwest-southeast vergent Mesozoic age crustal shortening . This lies in contrast to the remainder of the Cordillera, in which shortening is predominantly east–west. Structures associated with the Maria Fold and Thrust Belt are exposed in a series of mountain ranges in southeastern California and western Arizona . Many of the deep structures of the MFTB have been exposed due to east–west to northeast-southwest Cenozoic age extension and unroofing.
6-426: MFTB may refer to: Maria fold and thrust belt Myanma Foreign Trade Bank Multi Functional Training Brigade, a type of brigade in the U.S. Army Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title MFTB . If an internal link led you here, you may wish to change the link to point directly to
12-619: The subduction of the Farallon slab beneath western North America. At the Maria fold-and-thrust-belt, compressional deformation shifts to being generally north–south, with the front of the mountain ranges being defined by a roughly east–west line. This line then shifts gently to the east-southeast, where the Cordilleran deformation diffuses into a broad shear zone in northeastern Mexico . Another notable feature that differentiates it from
18-568: The emplacement of metamorphic core complexes , the 'type example' of which is defined by the Whipple Mountains in southeastern California. The Maria fold-and-thrust-belt is defined as the region where the compression that helped create the North American Cordillera – abruptly changed directions. North of the Maria fold-and-thrust-belt, the mountain ranges trend north–south, with east–west compression due to
24-419: The intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=MFTB&oldid=1257642553 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Maria fold and thrust belt In some parts of this fold-and-thrust-belt region, the extension resulted in
30-555: The rest of the Cordillera is that the deformation involves the rocks of the North American craton . Deformation in the remainder of the Cordillera only involves rocks that were part of the near-shore and offshore, sedimentary sequences. Since soils and climate differ across the Maria fold-and-thrust-belt, this regional geologic structure can be considered a "dividing line" for a number of flora and fauna species. For example,
36-498: The species range of the endangered California Fan Palm , Washingtonia filifera does not extend north of the Maria fold-and-thrust-belt, or more specifically the Turtle Mountains . The Maria fold-and-thrust-belt comprises a large number of ranges in the south-eastern Mojave and north-western Sonoran deserts, including the: List of some regional landforms. (The ~east-west Bill Williams River appears as part of
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