Tectonics, Sedimentary Basins, and Provenance: A Celebration of the Career of William R. Dickinson
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Provenance, paleogeography, and paleotectonic implications of the mid-Cenozoic Sespe Formation, coastal southern California, USA
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Published:December 28, 2018
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CiteCitation
Raymond V. Ingersoll, Claire D. Spafford, Carl E. Jacobson, Marty Grove, Jeffrey L. Howard, Jeremy Hourigan, Jane Pedrick, 2018. "Provenance, paleogeography, and paleotectonic implications of the mid-Cenozoic Sespe Formation, coastal southern California, USA", Tectonics, Sedimentary Basins, and Provenance: A Celebration of the Career of William R. Dickinson, Raymond V. Ingersoll, Timothy F. Lawton, Stephan A. Graham
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ABSTRACT
The upper Middle Eocene to Lower Miocene Sespe Formation is the youngest part of an ~7-km-thick Cretaceous–Paleogene forearc stratigraphic sequence in coastal southern California. Whereas Upper Cretaceous through Middle Eocene strata of southern California record a transition from local (i.e., continental-margin batholith) to extraregional (i.e., cratonal) provenance resulting from Laramide deformation (75–35 Ma), the Sespe Formation records the reversal of this process and the re-establishment of local sediment sources by Middle Miocene time.
In contrast to underlying dominantly marine strata, the Sespe Formation primarily consists of alluvial/fluvial and deltaic sandstone and conglomerate, which represent terminal filling of the forearc...
- absolute age
- California
- Cenozoic
- clastic rocks
- Coast Ranges
- Colorado River
- conglomerate
- dates
- deltaic environment
- depositional environment
- Eocene
- Farallon Plate
- fluvial sedimentation
- Franciscan Complex
- Laramide Orogeny
- Mesozoic
- middle Cenozoic
- middle Miocene
- Miocene
- Mojave Desert
- Neogene
- nesosilicates
- North America
- orthosilicates
- Paleogene
- paleogeography
- Peninsular Ranges
- provenance
- rotation
- Salinian Block
- sandstone
- sedimentary rocks
- sedimentation
- Sespe Formation
- silicates
- slabs
- Sonoran Desert
- Southern California
- tectonics
- terranes
- Tertiary
- U/Pb
- United States
- upper Eocene
- zircon
- zircon group
- Nacimiento Fault
- detrital zircon