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Author: Lehi F. Hintze Publisher: Utah Geological Survey ISBN: 1557916926 Category : Science Languages : en Pages : 324
Book Description
This bulletin serves not only to introduce the non-geologist to the rich geology of Millard County, but also to provide professional geologists with technical information on the stratigraphy, paleontology, and structural geology of the county. Millard County is unique among Utah’s counties in that it contains an exceptionally complete billion-year geologic record. This happened because until about 200 million years ago the area of present-day Millard County lay near sea level and was awash in shallow marine waters on a continental shelf upon which a stack of fossil-bearing strata more than 6 miles (10 km) thick slowly accumulated. This bulletin summarizes what is known about these strata, as well as younger rocks and surficial deposits in the county, and provides references to scientific papers that describe them in greater detail. Mountains North 30 x 60 (1:100,000-scale) quadrangles. These companion maps and this bulletin portray the geology of Millard County more completely and accurately than any previously published work.
Author: Janae Wallace Publisher: Utah Geological Survey ISBN: 1557918538 Category : CD-ROMs Languages : en Pages : 152
Book Description
This report characterizes the relationship of geology to groundwater occurrence and flow, with emphasis on determining the thickness of the valley-fill aquifer and water yielding properties of the fractured rock aquifers. Develops a water budget for the drainage basin and classifies the groundwater quality and identifies the likely sources of nitrate in groundwater.
Author: Thomas Emery Eakin Publisher: ISBN: Category : Groundwater Languages : en Pages : 48
Book Description
A regional appraisal and discussion of planning the future ground-water development in a region characterized by a semiarid climate and closed-basin drainage.
Author: Paul Inkenbrandt Publisher: Utah Geological Survey ISBN: 1557918910 Category : Base flow (Hydrology). Languages : en Pages : 122
Book Description
This 116-page report presents the results of an investigation by the Utah Geological Survey of land subsidence and earth fissures in Cedar Valley, Iron County, Utah. Basin-fill sediments of the Cedar Valley Aquifer contain a high percentage of fine-grained material susceptible to compaction upon dewatering. Groundwater discharge in excess of recharge (groundwater mining) has lowered the potentiometric surface in Cedar Valley as much as 114 feet since 1939. Groundwater mining has caused permanent compaction of fine-grained sediments of the Cedar Valley aquifer, which has caused the land surface to subside, and a minimum of 8.3 miles of earth fissures to form. Recently acquired interferometric synthetic aperture radar imagery shows that land subsidence has affected approximately 100 mi² in Cedar Valley, but a lack of accurate historical benchmark elevation data over much of the valley prevents its detailed quantification. Continued groundwater mining and resultant subsidence will likely cause existing fissures to lengthen and new fissures to form which may eventually impact developed areas in Cedar Valley. This report also includes possible aquifer management options to help mitigate subsidence and fissure formation, and recommended guidelines for conducting subsidence-related hazard investigations prior to development.
Author: Lehi F. Hintze
Author: Janae Wallace
Author: Geological Survey (U.S.)
Author: Thomas Emery Eakin
Author: Sharon E. Kroening
Author: Paul Inkenbrandt
Author: United States. Congress. Senate. Interior and Insular Affairs
Author: Geological Survey (U.S.)
Author: Geological Survey (U.S.)
Author: 
Author: Geological Survey (U.S.)