Combined reservoir simulation and geochemical data analysis are used to investigate the effects of recharge and other reservoir processes occurring in the western part of the Cerro Prieto, Mexico, geothermal field (i.e., Cerro Prieto I area). Enthalpy-based temperatures and bottomhole temperatures are calculated based on simplified models of the system, considering different reservoir boundary conditions and zones of contrasting initial temperatures and reservoir properties. By matching the computed trends with geothermometer-based temperature and enthalpy histories of producing wells, the main processes active in the western area of Cerro Prieto are identified. This part of the geothermal system is strongly influenced by nearby groundwater aquifers; cooler waters readily recharge the reservoirs. In response to exploitation, the natural influx of cold water into the shallower alpha reservoir is mainly from the west and down Fault L, while the recharge to the deeper beta reservoir in this part of the field, seems to be only lateral, from the west and possibly south. 11 refs., 12 figs.

Geological, geophysical and geochemical studies contributed to conceptual hydrologic model of the blind'' (no surface expression), moderate-temperature (greater than 130{degree}C) Newcastle geothermal system, located in the Basin and Range-Colorado Plateau transition zone of southwestern Utah. Temperature gradient measurements define a thermal anomaly centered near the surface trace of the range-bounding Antelope Range fault with and elongate dissipative plume extending north into the adjacent Escalante Valley. Spontaneous potential and resistivity surveys sharply define the geometry of the dominant upflow zone (not yet explored), indicating that most of the thermal fluid issues form a short segment along the Antelope Range fault and discharges into a gently-dipping aquifer. Production wells show that this aquifer lies at a depth between 85 and 95 meter. Electrical surveys also show that some leakage of thermal fluid occurs over a 1.5 km (minimum) interval along the trace of the Antelope Range fault. Major element, oxygen and hydrogen isotopic analyses of water samples indicate that the thermal fluid is a mixture of meteoric water derived from recharge areas in the Pine Valley Mountains and cold, shallow groundwater. A northwest-southeast trending system of faults, encompassing a zone of increased fracture permeability, collects meteoric water from the recharge area, allows …

This appendix contains raw data used in the fault slip analysis. Data was collected from four sites, sites A through D. Minor fault slip measurements are listed for each site, and each row of data is one measurement. The index number is an arbitrary sequential number. Strike is the strike of the fault plane, measured in the northern hemisphere. Dip is the dip of the fault plane, which has two letters attached to the end showing the quadrant of the dip direction. Rake is the rake of the slickenside in the plane of the fault, which has two letters attached to the end showing the quadrant of the plunge direction of the rake. Sense is the sense of slip of the fault: N = normal (rake > 45{degree}), R = reverse (rake > 45{degree}), D = dextral (rake < 45{degree}), S = sinistral (rake < 45{degree}). 37 figs., 19 tabs.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Monthly magazine published by the Maverick Region of the Porsche Club of America containing stories related to the organization or of interest to the group's members including news, upcoming and past events, other feature articles, and classified advertisements.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Annual statistical report documenting assessment rations for school districts to provide taxpayers with information to determine the equity of their properties and to assist local officials who are evaluating their taxing system.

Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Program for the 95th annual meeting of the Texas Society Sons of the American Revolution, held from March 9 through the 10, 1990, at the College Station Hilton and Conference Center, in College Station, Texas, including a list of sessions for the meeting and related information about the organization and conference. The meeting was called to order by President Billy E. Hightower, in the Ballroom III of the Conference Center.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Newsletter of the Texas Air Control Board including information about the Board as well as news, events, and other relevant information related to air quality in Texas.

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.

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This document reports data collected as part of the Ecological Monitoring Program (EMP) at the Waste Isolation Pilot Plant near Carlsbad, New Mexico, for Calendar Year 1987. Also included are data from the last quarter (October through December) of 1986. This report divides data collection activities into two parts. Part A covers general environmental monitoring which includes meteorology, aerial photography, air quality monitoring, water quality monitoring, and wildlife population surveillance. Part B focuses on the special studies being performed to evaluate the impacts of salt dispersal from the site on the surrounding ecosystem. The fourth year of salt impact monitoring was completed in 1987. These studies involve the monitoring of soil chemistry, soil microbiota, and vegetation in permanent study plots. None of the findings indicate that the WIPP project is adversely impacting environmental quality at the site. As in 1986, breeding bird censuses completed this year indicate changes in the local bird fauna associated with the WIPP site. The decline in small mammal populations noted in the 1986 census is still evident in the 1987 data; however, populations are showing signs of recovery. There is no indication that this decline is related to WIPP activities. Rather, the evidence indicates that …

The Earth Science Laboratory of the University of Utah Research Institute has been involved in research in geothermal exploration and development for the past eleven years. Our work has resulted in the publication of nearly 500 reports, which are listed in this document. Over the years, we have collected drill chip and core samples from more than 180 drill holes in geothermal areas, and most of these samples are available to others for research, exploration and similar purposes. We hope that scientists and engineers involved in industrial geothermal development will find our technology transfer and service efforts helpful.

Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.