Tectonic evolution of the Jurassic–Cretaceous Great Valley forearc, California: Implications for the Franciscan thrust-wedge hypothesis

Constenius, Kurt N.; Johnson, Roy A.; Dickinson, William R.; Williams, Thomas A.

doi:10.1130/0016-7606(2000)112<1703:teotjc>2.0.co;2

Cited by 70 publications

(77 citation statements)

References 58 publications

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“…The geologic structure of the Great Valley and the Coast Ranges to the west reflects its history as a subducting margin (Atwater 1970;Constenius et al 2000;Godfrey and Klemperer 1998) during the Mesozoic and early Tertiary. The various formations exposed in the Coast Ranges, such as the Franciscan, Coast Range ophiolite and Great Valley sequence make up a subduction assemblage from that tectonic environment (Constenius et al 2000) of Mesozoic age.…”

Section: Regional Geologic Structurementioning

confidence: 99%

“…The various formations exposed in the Coast Ranges, such as the Franciscan, Coast Range ophiolite and Great Valley sequence make up a subduction assemblage from that tectonic environment (Constenius et al 2000) of Mesozoic age. Starting about 30 My ago subduction of the Farallon Plate ceased (Atwater 1970) and movement on the San Andreas commenced.…”

Section: Regional Geologic Structurementioning

confidence: 99%

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Shear-wave Velocity Model from Rayleigh Wave Group Velocities Centered on the Sacramento/San Joaquin Delta

Fletcher

Erdem

2017

Pure Appl. Geophys.

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Abstract-Rayleigh wave group velocities obtained from ambient noise tomography are inverted for an upper crustal model of the Central Valley, California, centered on the Sacramento/San Joaquin Delta. Two methods were tried; the first uses SURF96, a least squares routine. It provides a good fit to the data, but convergence is dependent on the starting model. The second uses a genetic algorithm, whose starting model is random. This method was tried at several nodes in the model and compared to the output from SURF96. The genetic code is run five times and the variance of the output of all five models can be used to obtain an estimate of error. SURF96 produces a more regular solution mostly because it is typically run with a smoothing constraint. Models from the genetic code are generally consistent with the SURF96 code sometimes producing lower velocities at depth. The full model, calculated using SURF96, employed a 2-pass strategy, which used a variable damping scheme in the first pass. The resulting model shows low velocities near the surface in the Central Valley with a broad asymmetrical sedimentary basin located close to the western edge of the Central Valley near 122°W longitude. At shallow depths, the Rio Vista Basin is found nestled between the Pittsburgh/ Kirby Hills and Midland faults, but a significant basin also seems to exist to the west of the Kirby Hills fault. There are other possible correlations between fast and slow velocities in the Central Valley and geologic features such as the Stockton Arch, oil or gas producing regions and the fault-controlled western boundary of the Central Valley.

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Section: Regional Geologic Structurementioning

confidence: 99%

Section: Regional Geologic Structurementioning

confidence: 99%

Shear-wave Velocity Model from Rayleigh Wave Group Velocities Centered on the Sacramento/San Joaquin Delta

Fletcher

Erdem

2017

Pure Appl. Geophys.

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“…In the Sierran Foothills, Upper Cretaceous proximal units of the GVG lie with angular unconformity on the Upper Jurassic accretionary sequence. To the NW, Lower Cretaceous GVG strata rest on rocks of the Eastern Klamath terrane and associated Early Cretaceous stocks (Constenius et al, 2000). Basal sedimentary units in the western GVG were deposited on the essentially unmetamorphosed Middle Jurassic Coast Range ophiolite (Bailey et al, 1970;Shervais et al, 2005;Hopson et al, 2008).…”

Section: Geological Overview Of the California Coast Rangesmentioning

confidence: 99%

Mesozoic transpression, transtension, subduction and metallogenesis in northern and central California

2008

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Middle Paleozoic to Middle Jurassic terrane assemblies in the Klamaths and Sierran Foothills consist of mafic-ultramafic complexes + fine-grained terrigenous strata derived from previously accreted continental-margin belts. Sutured oceanic terranes reflect c. 230 Myr of margin-parallel slip involving chiefly transtension and transpression. Quartzofeldspathic clastic rocks and blueschists ± eclogites are very rare. Little devolatilization occurred at magmagenic depths; hence, coeval hydrothermal ore deposits and granitoids are uncommon. In contrast, nearly head-on Cretaceous subduction of the Farallon plate generated the massive Klamath-Sierra Nevada volcanicplutonic arc, reflecting dewatering of the eastward descending oceanic lithosphere in the magmagenic zone. Immature Great Valley forearc and Franciscan trench deposits shed from the arc record c. 70 Myr. of rapid crustal growth. Au-bearing solutions rising from magmagenic depths, exsolved from plutons, and expelled from heated wall rocks were mobilized attending arc construction. Precipitation of gold-bearing quartz veins

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“…[20] At the end of Mariposa-Galice deposition, the Klamath salient was gradually displaced $200 km to the west relative to the formerly contiguous Sierran arc [e.g., Coleman et al, 1988;Constenius et al, 2000;Dickinson, 2008]. The intrusion of $170 Ma granitoid bodies in the westernmost Klamaths and restricted occurrences of younger plutons to progressively more easterly belts [Hacker et al, 1995;Irwin and Wooden, 1999;Irwin, 2003] suggest that the left-lateral offset of the Klamath salient took place over the interval $150-140 Ma as the crustal assembly of oceanic terranes and superjacent strata gradually migrated westward off the subducting plate's deep-seated magmagenic zone.…”

Section: Plate Tectonic Implicationsmentioning

confidence: 99%

Guadalupe pluton–Mariposa Formation age relationships in the southern Sierran Foothills: Onset of Mesozoic subduction in northern California?

Ernst

Saleeby

Snow³

2009

J. Geophys. Res.

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[1] We report a new 153 ± 2 Ma SIMS U-Pb date for zircons from the hypabyssal Guadalupe pluton which crosscuts and contact metamorphoses upper crustal Mariposa slates in the southern Sierra. A $950 m thick section of dark metashales lies below sandstones from which clastic zircons were analyzed at 152 ± 2 Ma. Assuming a compacted depositional rate of $120 m/Myr, accumulation of Mariposa volcanogenic sediments, which overlie previously stranded Middle Jurassic and older ophiolite + chertargillite belts in the Sierran Foothills, began no later than $160 Ma. Correlative Oxfordian-Kimmeridgian strata of the Galice Formation occupy a similar position in the Klamath Mountains. We speculate that the Late Jurassic was a time of transition from (1) a mid-Paleozoic-Middle Jurassic interval of mainly but not exclusively strike-slip and episodic docking of oceanic terranes; (2) to transpressive plate underflow, producing calcalkaline igneous arc rocks ± outboard blueschists at $170-150 Ma, whose erosion promoted accumulation of the Mariposa-Galice overlap strata; (3) continued transpressive underflow attending $200 km left-lateral displacement of the Klamath salient relative to the Sierran arc at $150-140 Ma and development of the apparent polar wander path cusps for North and South America; and (4) then nearly orthogonal mid and Late Cretaceous convergence commencing at $125-120 Ma, during reversal in tangential motion of the Pacific plate. After $120 Ma, nearly head-on subduction involving minor dextral transpression gave rise to voluminous continent-building juvenile and recycled magmas of the Sierran arc, providing the erosional debris to the Great Valley fore arc and Franciscan trench.

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Tectonic evolution of the Jurassic–Cretaceous Great Valley forearc, California: Implications for the Franciscan thrust-wedge hypothesis

Cited by 70 publications

References 58 publications

Shear-wave Velocity Model from Rayleigh Wave Group Velocities Centered on the Sacramento/San Joaquin Delta

Shear-wave Velocity Model from Rayleigh Wave Group Velocities Centered on the Sacramento/San Joaquin Delta

Mesozoic transpression, transtension, subduction and metallogenesis in northern and central California

Guadalupe pluton–Mariposa Formation age relationships in the southern Sierran Foothills: Onset of Mesozoic subduction in northern California?

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