The Tumey Giant Injection Complex, Tumey Hill, California (USA)

Gustavo Zvirtes, Andrew Hurst, Ruy P. Philipp, Giuseppe Palladino, Antonio Grippa

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The Tumey Giant Injection Complex (TGIC) is a regionally-developed sandstone intrusion complex emplaced into deep-water Kreyenhagen Shale (Eocene) in the San Joaquin Basin, Central California. Detailed geological mapping, stratigraphic reconstruction and outcrop description, supported by structural analysis, allowed the architectural characterisation of the TGIC. The complex is described as two main stratigraphically-constrained intervals: i) a lower interval (250m thick) emplaced into clay-rich mudrock, consisting dominantly of sills with stepped and multi-layered geometry; ii) an upper interval (200m thick) characterized by injection breccia and large wing-like intrusions (ca. 600m width × 100m high) emplaced within predominantly biosiliceous mudrock strata. The intrusions in both intervals were derived from turbiditic channel-fills intensely modified by sand fluidisation. Sandstone intrusions and fractures affecting host strata are dominantly oriented sub-parallel to the basin axis striking between NW-SE and N-S, mainly dipping to NE and forming asymmetric saucer-shaped intrusions, suggesting structurally-driven hydraulic fracturing and sand emplacement. The absence of a deep aquifer and potential sand sources underlying the complex suggests a lateral contribution of fluid flow. The TGIC occurs at a scale similar to injection complexes recognized in the subsurface and is a valuable reservoir analogue for hydrocarbon accumulations associated with sand injectites.
Original languageEnglish
Title of host publicationSubsurface Sand Remobilization and Injection
EditorsS. Silcock, M. Huuse, M. Bowman, A. Hurst, S. Cobain
PublisherGeological Society of London
DOIs
Publication statusE-pub ahead of print - 25 Jul 2019

Publication series

NameGeological Society Special Publications
PublisherGeological Society of London
Volume493
ISSN (Print)0305-8719
ISSN (Electronic)2041-4927

Fingerprint

sand
mudstone
sandstone
fluidization
geological mapping
structural analysis
breccia
basin
sill
fluid flow
shale
emplacement
outcrop
Eocene
fill
deep water
aquifer
hydrocarbon
geometry
clay

Keywords

  • giant sand injection complex
  • San Joaquin Basin
  • intrusion geometry
  • intrusion architecture
  • injection breccia
  • subsurface analogue

Cite this

Zvirtes, G., Hurst, A., Philipp, R. P., Palladino, G., & Grippa, A. (2019). The Tumey Giant Injection Complex, Tumey Hill, California (USA). In S. Silcock, M. Huuse, M. Bowman, A. Hurst, & S. Cobain (Eds.), Subsurface Sand Remobilization and Injection (Geological Society Special Publications; Vol. 493). Geological Society of London. https://doi.org/10.1144/SP493-2019-3

The Tumey Giant Injection Complex, Tumey Hill, California (USA). / Zvirtes, Gustavo; Hurst, Andrew; Philipp, Ruy P.; Palladino, Giuseppe; Grippa, Antonio.

Subsurface Sand Remobilization and Injection. ed. / S. Silcock; M. Huuse; M. Bowman; A. Hurst; S. Cobain. Geological Society of London, 2019. (Geological Society Special Publications; Vol. 493).

Research output: Chapter in Book/Report/Conference proceedingChapter

Zvirtes, G, Hurst, A, Philipp, RP, Palladino, G & Grippa, A 2019, The Tumey Giant Injection Complex, Tumey Hill, California (USA). in S Silcock, M Huuse, M Bowman, A Hurst & S Cobain (eds), Subsurface Sand Remobilization and Injection. Geological Society Special Publications, vol. 493, Geological Society of London. https://doi.org/10.1144/SP493-2019-3
Zvirtes G, Hurst A, Philipp RP, Palladino G, Grippa A. The Tumey Giant Injection Complex, Tumey Hill, California (USA). In Silcock S, Huuse M, Bowman M, Hurst A, Cobain S, editors, Subsurface Sand Remobilization and Injection. Geological Society of London. 2019. (Geological Society Special Publications). https://doi.org/10.1144/SP493-2019-3
Zvirtes, Gustavo ; Hurst, Andrew ; Philipp, Ruy P. ; Palladino, Giuseppe ; Grippa, Antonio. / The Tumey Giant Injection Complex, Tumey Hill, California (USA). Subsurface Sand Remobilization and Injection. editor / S. Silcock ; M. Huuse ; M. Bowman ; A. Hurst ; S. Cobain. Geological Society of London, 2019. (Geological Society Special Publications).
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abstract = "The Tumey Giant Injection Complex (TGIC) is a regionally-developed sandstone intrusion complex emplaced into deep-water Kreyenhagen Shale (Eocene) in the San Joaquin Basin, Central California. Detailed geological mapping, stratigraphic reconstruction and outcrop description, supported by structural analysis, allowed the architectural characterisation of the TGIC. The complex is described as two main stratigraphically-constrained intervals: i) a lower interval (250m thick) emplaced into clay-rich mudrock, consisting dominantly of sills with stepped and multi-layered geometry; ii) an upper interval (200m thick) characterized by injection breccia and large wing-like intrusions (ca. 600m width × 100m high) emplaced within predominantly biosiliceous mudrock strata. The intrusions in both intervals were derived from turbiditic channel-fills intensely modified by sand fluidisation. Sandstone intrusions and fractures affecting host strata are dominantly oriented sub-parallel to the basin axis striking between NW-SE and N-S, mainly dipping to NE and forming asymmetric saucer-shaped intrusions, suggesting structurally-driven hydraulic fracturing and sand emplacement. The absence of a deep aquifer and potential sand sources underlying the complex suggests a lateral contribution of fluid flow. The TGIC occurs at a scale similar to injection complexes recognized in the subsurface and is a valuable reservoir analogue for hydrocarbon accumulations associated with sand injectites.",
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author = "Gustavo Zvirtes and Andrew Hurst and Philipp, {Ruy P.} and Giuseppe Palladino and Antonio Grippa",
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