scholarly journals Eocene fault-controlled fluid flow and mineralization in the Paradox Basin, United States

Geology ◽  
2021 ◽  
Author(s):  
Lydia R. Bailey ◽  
Jason Kirk ◽  
Sidney R. Hemming ◽  
Robert W. Krantz ◽  
Peter W. Reiners
Keyword(s):  
Fluid Flow ◽  
Fault Gouge ◽  
Time Interval ◽  
Fluid Migration ◽  
Oil Reservoir ◽  
Paradox Basin ◽  
Show Evidence ◽  
Southwestern Usa ◽  
Red Bed ◽  
Close Temporal Relationship

Sedimentary rocks of the Paradox Basin of the Colorado Plateau (southwestern USA) record widespread manifestations of paleo–fluid flow and fluid-rock reactions including Cu, U-V, and Fe-Mn mineral deposits, Si and Ca metasomatism, hydrocarbon accumulations, and bleached sandstones. Many of these are spatially associated with faults. Here we show evidence for a widespread phase of fault-related fluid migration and mineralization at 41–48 Ma in the Paradox Basin. We measured K-Ar dates of multiple size fractions of clay-rich fault gouge, yielding statistically overlapping dates of authigenic (1Md) illite for the Salt Valley (47.0 ± 3.0 Ma), Kane Springs (47.7 ± 3.8 Ma), Cliffdweller (43.4 ± 4.6 Ma), Courthouse (41.9 ± 2.3 Ma), Lisbon Valley (45.3 ± 0.9 Ma), and GTO (48.1 ± 2.6 Ma) faults. The latter two have an illite Rb-Sr isochron age of 50.9 ± 3.5 Ma, and fault-adjacent bornite has a Re-Os isochron age of 47.5 ± 1.5 Ma. Authigenic illite from a paleo–oil reservoir near the Courthouse fault formed from the interaction of reduced fluids with oxidized red-bed sandstones at 41.1 ± 2.5 Ma. The Moab and Keystone faults have older authigenic illite ages of 59.1 ± 5.7 Ma and 65.2 ± 1.0 Ma, respectively. Our results show a close temporal relationship between fault gouge formation, red-bed bleaching, and Cu mineralization during an enigmatic time interval, raising questions about drivers of Eocene fluid flow.

The effect of seismic deformation mechanisms on fluid migration in accumulation area of gold ore concentrations

2019 ◽  
Vol 484 (1) ◽  
pp. 87-92
Author(s):  
T. M. Zlobina ◽  
V. A. Petrov ◽  
K. Yu. Murashov ◽  
A. A. Kotov
Keyword(s):  
Fluid Flow ◽  
Flow Control ◽  
Deformation Mechanisms ◽  
Fluid Migration ◽  
Fluid Regime ◽  
Gold Ore ◽  
Fluid Flow Control ◽  
Seismic Deformation ◽  
Fluid Inflow ◽  
Main Influence

This study investigates the effect of mechanisms of paleode formations during the period of fluid inflow into the accumulation sphere of gold concentrations. Such mechanisms are believed to correspond to DC- and NDC- type seismic mechanisms, whose main influence on fluid migration lies on the formation of different, relative to fluid regime parameters, structural and hydrodynamic organizations of the ore-forming system, and fluid flow control within the area of the accumulation of ore concentrations.  

THE EFFECT OF FAULT GOUGE ON FLUID FLOW, LISBON VALLEY, UT

2019 ◽  
Author(s):  
Carson L. Broaddus ◽  
◽  
Kimberly A. Hannula ◽  
Robert W. Krantz
Keyword(s):  
Fluid Flow ◽  
Fault Gouge

scholarly journals Clay minerals from the Arkitsa fault gouge zone, in Central Greece, and implications for fluid flow

2017 ◽  
Vol 47 (2) ◽  
pp. 616 ◽  
Author(s):  
D. Papoulis ◽  
D. Romiou ◽  
S. Kokkalas ◽  
P. Lampropoulou
Keyword(s):  
Fluid Flow ◽  
Clay Minerals ◽  
Fault Zone ◽  
Damage Zone ◽  
Fault Gouge ◽  
Hydrothermal Conditions ◽  
Core Zone ◽  
Damage Area ◽  
Central Greece ◽  
Alkaline Conditions

Clay minerals in shallow fault rocks are increasingly recognized as key to the mechanical and seismogenic behavior of faults and fluid flow circulation within the fault core and the surrounding damage zone. We therefore studied faultgouge mineralogy from samples derived from the ENE-trending Arkitsa fault zone, in east-central Greece, in order to testify if the fault is acting as a channel for fluid flow and whether the conditions that characterize the flow can be identified. Clay-gouge samples were collected within the fault core zone, as well as in the broader fault damage area. Consequently, the samples were analyzed by X-Ray Diffraction, SEM and Electron microprobe analyses. The minerals that were identified within the centre of the fault zone are: Montmorillonite, corrensite, illite, micro-calcite, dolomite, quartz, plagioclase and K-feldspars. The absence of corrensite, a clay mineral usually formed in hydrothermal conditions, in the samples from the broader fault damage area indicates that the circulation of hydrothermal fluids is mostly confined within and around the fault core zone. The assemblages within the fault gouge zone and especially the presence of corrensite, combined with the absence of laumontite, indicate hydrothermal alteration at neutral to alkaline conditions and a temperature range at about 100-150 oC.

GEOCHRONOLOGY REVEALS EOCENE FLUID-ROCK INTERACTION AND FAULT-CONTROLLED FLUID FLOW IN THE PARADOX BASIN

2020 ◽  
Author(s):  
Lydia R. Bailey ◽  
◽  
Jason Kirk ◽  
Sidney R. Hemming ◽  
Robert W. Krantz ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Rock Interaction ◽  
Paradox Basin

scholarly journals Cataclastic deformation of triaxially deformed, cemented mudrock (Callovo Oxfordian Clay): an experimental study at the micro/nano scale using BIB-SEM

2016 ◽  
Author(s):  
Guillaume Desbois ◽  
Nadine Höhne ◽  
Janos L. Urai ◽  
Pierre Bésuelle ◽  
Gioacchino Viggiani
Keyword(s):  
Fluid Flow ◽  
Ion Beam ◽  
Constitutive Models ◽  
Sem Analysis ◽  
Image Correlation ◽  
Macroscopic Description ◽  
Grain Rotation ◽  
Show Evidence ◽  
Initial Fracture ◽  
Clear Change

Abstract. The macroscopic description of deformation and fluid flow in mudrocks can be improved by a better understanding of microphysical deformation mechanisms. Here we use a combination of Scanning Electron Microscopy (SEM) and Broad Ion Beam (BIB) polishing to study the evolution of micro structure in samples of Callovo-Oxfordian Clay that were previously tested in the lab. Digital Image Correlation (DIC) enabled for the measurement of strain fields in the specimens, which were used as a guide to select regions in the sample for BIB-SEM analysis. Microstructures show evidence for dominantly cataclastic mechanisms (intergranular, transgranular, intragranular cracking, grain rotation, clay particle bending) down to nm- scale. At low strain, the dilatant fabric contains individually recognizable open fractures, while at high strain the reworked clay gouge contains broken non-clay grains, with a clear change towards smaller pores than the undeformed material and corresponding resealing of initial fracture porosity. This study might provide a first step towards a micro scale basis for constitutive models of deformation and fluid flow in cemented mudstones.

LATE TERTIARY FLUID MIGRATION IN THE TIMOR SEA: A KEY CONTROL ON THERMAL AND DIAGENETIC HISTORIES?

1996 ◽  
Vol 36 (1) ◽  
pp. 399 ◽  
Author(s):  
G.W. O'Brien ◽  
M. Lisk ◽  
I. Duddy ◽  
P.J. Eadington ◽  
S. Cadman ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Fault Reactivation ◽  
Fluid Migration ◽  
Early Pliocene ◽  
Late Tertiary ◽  
Timor Sea ◽  
Thermal Histories ◽  
Hydrocarbon Charge ◽  
Integrated Study

An integrated study of the fluid flow, hydrocarbon charge and thermal histories of a suite of traps from the Timor Sea has revealed the presence of a key fluid flow event in the latest Miocene/Early Pliocene. This event, which coincided with, and was driven by, the extensive tectonism and fault reactivation associated with the collision of the Australian and Eurasian plates, involved the flowage of hot (90-120°C), saline (>200,000 ppm) brines (probably from deeply buried Palaeozoic evaporite sequences) up major faults and through the Mesozoic and Tertiary sequences. The passage of these hot brines produced a Late Tertiary (100,000 to 1 million years). In contrast, strongly reactivated, low integrity traps such as East Swan appear to have been breached too quickly (

Effective use Model of Low Permeability Oil Reservoir

2013 ◽  
Vol 753-755 ◽  
pp. 53-57
Author(s):  
Liang Dong Yan ◽  
Zhi Juan Gao ◽  
Feng Gang Dai
Keyword(s):  
Fluid Flow ◽  
Pressure Gradient ◽  
Seepage Flow ◽  
Oil Field ◽  
Low Permeability ◽  
Oil Reservoir ◽  
Reservoir Fluid ◽  
Start Up ◽  
Well Pattern ◽  
Effective Use

The throat of low permeability oil reservoir is narrow and small, the reservoir fluid flow resistance is big, and with the start-up pressure gradient, compare with medium and high permeability reservoir fluid flow, the characteristics are obviously different in performance for non-darcy flow at low speed. This kind of oil field reservoir started in the process of mining scope is small, the degree of use and the development effect is low. To solve these problems, this paper established considering start-up pressure gradient of the new unstable seepage flow mathematical model of non-darcy radial flow which the analytical solution and the productivity equation is deduced, established the effective radius of the use of low permeability reservoirs, and systemicly researched the calculation method of area well pattern of different types of non-darcy seepage.

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