Age, distribution, and stratigraphic relationship of rock units in the San Joaquin Basin Province, California: Chapter 5 in &lt;i&gt;Petroleum systems and geologic assessment of oil and gas in the San Joaquin Basin Province, California&lt;/i&gt;

Scheirer, Allegra Hosford; Magoon, Leslie B.

doi:10.3133/pp17135

Cited by 8 publications

(18 citation statements)

References 23 publications

(51 reference statements)

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“…The type of C californicus (Kellogg, 1911) was described from the North Dome of the Kettleman Hills, upper Etchegoin Formation in Fresno County California (Kellogg, 1911;Stirton, 1935). The Etchegoin Formation spans from the late early Hemphillian to the early Blancan in age (Hosford Scheirer and Magoon, 2007;Janis et al, 2008), between 7.0 +/-1.2 Ma for the lower portion (Obradovich et al, 1978) and 4.1 +/-0.2 Ma for the uppermost (Sarna-Wojcicki et al, 1991), but the type and paratypes of C californicus come from the upper part of the section.…”

Section: Introductionmentioning

confidence: 99%

An Early Hemphillian Occurrence of Castor (Castoridae) from the Rattlesnake Formation of Oregon

Samuels

Zancanella

2011

Journal of Paleontology

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Section: Introductionmentioning

confidence: 99%

An Early Hemphillian Occurrence of Castor (Castoridae) from the Rattlesnake Formation of Oregon

Samuels

Zancanella

2011

Journal of Paleontology

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“…2). Sedimentation is controlled by sea level changes, regional tectonics, and sediment supply (Callaway 1990;Scheirer and Magoon 2007). The tectonic setting in the SJV transitioned from a forearc setting above a subduction zone to a transform setting with the initiation of the San Andreas Fault~30 ma (Atwater 1970;Fig.…”

Section: Geologic Backgroundmentioning

confidence: 99%

“…Unlike many sedimentary basins, the SJV does not have buried evaporites, making processes like the initial composition of pore fluids, meteoric water recharge, and water-rock interactions the primary factors in developing the basin wide vertical and lateral TDS structure (Ramseyer and Boles 1986;Wilson et al 1999;Fisher and Boles 1990;Kharaka and Hanor 2004;Gillespie et al 2017;McMahon et al 2018). These processes are modified by stratigraphy containing extensive lowpermeability clays and shales (Faunt 2009;Scheirer and Magoon 2007) that can compartmentalize TDS by inhibiting meteoric water recharge pathways. All these processes combine to produce a TDS depth profile that generally increases with depth and that is fresher toward the eastern margin of the SJV (Kharaka and Hanor 2004;Gillespie et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Stratigraphic and structural controls on groundwater salinity variations in the Poso Creek Oil Field, Kern County, California, USA

Stephens

Shimabukuro

Chang³

et al. 2021

Hydrogeol J

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Groundwater total dissolved solids (TDS) distribution was mapped with a three-dimensional (3D) model, and it was found that TDS variability is largely controlled by stratigraphy and geologic structure. General TDS patterns in the San Joaquin Valley of California (USA) are attributed to predominantly connate water composition and large-scale recharge from the adjacent Sierra Nevada. However, in smaller areas, stratigraphy and faulting play an important role in controlling TDS. Here, the relationship of stratigraphy and structure to TDS concentration was examined at Poso Creek Oil Field, Kern County, California. The TDS model was constructed using produced water TDS samples and borehole geophysics. The model was used to predict TDS concentration at discrete locations in 3D space and used a Gaussian process to interpolate TDS over a volume. In the overlying aquifer, TDS is typically <1,000 mg/L and increases with depth to ~1,200–3,500 mg/L in the hydrocarbon zone below the Macoma claystone—a regionally extensive, fine-grained unit—and reaches ~7,000 mg/L in isolated places. The Macoma claystone creates a vertical TDS gradient in the west where it is thickest, but control decreases to the east where it pinches out and allows freshwater recharge. Previously mapped normal faults were found to exhibit inconsistent control on TDS. In one case, high-density faulting appears to prevent recharge from flushing higher-TDS connate water. Elsewhere, the high-throw segments of a normal fault exhibit variable behavior, in places blocking lower-TDS recharge and in other cases allowing flushing. Importantly, faults apparently have differential control on oil and groundwater.

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“…The noble gases are transferred back through the capillary by establishing a flow of water vapor from the transfer vessel onto a titanium sponge held at 950°C. Details about the subsequent purification and analysis steps can be found in the supporting information (Barry et al, 2016, SAES Getters, 1986, Stout & Gibbons, 1955. In addition, the supporting information contains information on the types of standards, blanks and corrections used.…”

Section: Methodsmentioning

confidence: 99%

“…Analyses of casing gas samples from injectate storage tanks in Fruitvale indicated substantial mixing with air . Geological and depositional history for the field can be found in the supporting information (Division of Oil, Gas and Geothermal Resources (DOGGR), 1992, 1998, Hluza, 1965Lillis & Magoon, 2007;Preston, 1931, Scheirer & Magoon, 2007.…”

Section: Geological Contextmentioning

confidence: 99%

A Novel Method for the Extraction, Purification, and Characterization of Noble Gases in Produced Fluids

Tyne

Barry

Hillegonds

et al. 2019

Geochem Geophys Geosyst

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Hydrocarbon systems with declining or viscous oil production are often stimulated using enhanced oil recovery (EOR) techniques, such as the injection of water, steam, and CO2, in order to increase oil and gas production. As EOR and other methods of enhancing production such as hydraulic fracturing have become more prevalent, environmental concerns about the impact of both new and historical hydrocarbon production on overlying shallow aquifers have increased. Noble gas isotopes are powerful tracers of subsurface fluid provenance and can be used to understand the impact of EOR on hydrocarbon systems and potentially overlying aquifers. In oil systems, produced fluids can consist of a mixture of oil, water and gas. Noble gases are typically measured in the gas phase; however, it is not always possible to collect gases and therefore produced fluids (which are water, oil, and gas mixtures) must be analyzed. We outline a new technique to separate and analyze noble gases in multiphase hydrocarbon‐associated fluid samples. An offline double capillary method has been developed to quantitatively isolate noble gases into a transfer vessel, while effectively removing all water, oil, and less volatile hydrocarbons. The gases are then cleaned and analyzed using standard techniques. Air‐saturated water reference materials (n = 24) were analyzed and results show a method reproducibility of 2.9% for 4He, 3.8% for 20Ne, 4.5% for 36Ar, 5 .3% for 84Kr, and 5.7% for 132Xe. This new technique was used to measure the noble gas isotopic compositions in six produced fluid samples from the Fruitvale Oil Field, Bakersfield, California.

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Age, distribution, and stratigraphic relationship of rock units in the San Joaquin Basin Province, California: Chapter 5 in <i>Petroleum systems and geologic assessment of oil and gas in the San Joaquin Basin Province, California</i>

Cited by 8 publications

References 23 publications

An Early Hemphillian Occurrence of Castor (Castoridae) from the Rattlesnake Formation of Oregon

An Early Hemphillian Occurrence of Castor (Castoridae) from the Rattlesnake Formation of Oregon

Stratigraphic and structural controls on groundwater salinity variations in the Poso Creek Oil Field, Kern County, California, USA

A Novel Method for the Extraction, Purification, and Characterization of Noble Gases in Produced Fluids

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