Book Chapter
Rancho Vallecitos Formation, Baja California Norte, Mexico
Author(s)
-
Published:January 01, 1993
Forty kilometers south of Tecate, Baja California Norte, is an extensive area of pre–medial Cretaceous, greenschist-facies flysch, poorly exposed, and of unknown thickness. These rocks are lithocorrelative with the Triassic(?) French Valley and Julian Schist Formations and the Upper Triassic-Middle Jurassic Bedford Canyon Formation, north of the international border.
The flysch type strata of the area consist of tabular, thin- to thick-bedded subarkosic metasandstone interbedded with metapelite. Isotopic studies on detrital zircon suggest a mixed population of discordant Middle to Late Proterozoic zircon and late Paleozoic and Triassic zircon.
The flysch strata, herein named the Rancho Vallecitos Formation, is divided...
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GSA Special Papers
The Prebatholithic Stratigraphy of Peninsular California
Author(s)
Geological Society of America

Volume
279
Copyright:
© 1993 Geological Society of America
Geological Society of America
ISBN print:
9780813722795
Publication date:
January 01, 1993
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Index Terms/Descriptors
- Baja California
- clastic rocks
- clasts
- contourite
- correlation
- cratons
- Cretaceous
- debris flows
- deltaic environment
- depositional environment
- fabric
- facies
- fluvial environment
- flysch
- graded bedding
- grain size
- greenschist facies
- laminations
- lithofacies
- lithostratigraphy
- mass movements
- matrix
- melange
- Mesozoic
- metamorphic rocks
- metapelite
- metasandstone
- metasedimentary rocks
- Mexico
- nesosilicates
- olistostromes
- orientation
- orogeny
- orthosilicates
- paleocurrents
- Paleozoic
- patterns
- petrography
- planar bedding structures
- Precambrian
- Proterozoic
- provenance
- sedimentary rocks
- sedimentary structures
- sedimentation
- shale
- silicates
- soft sediment deformation
- sorting
- stratigraphy
- submarine fans
- thickness
- Triassic
- turbidity current structures
- upper Precambrian
- zircon
- zircon group
- Julian Schist
- French Valley Formation
- Tecate Mexico
- Rancho Vallecitos Formation
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