Hydrostratigraphic units

Seaber, Paul R.

doi:10.1130/dnag-gna-o2.9

Cited by 35 publications

(35 citation statements)

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“…These included geology-related parameters such as the distribution and characteristics of primary and secondary porosity and permeability, as well as parameters related to the dynamics of the hydrological regime such as movement, storage, and release of water, and water-well construction methods and locations. Seaber (1988) argued that parameters related to the dynamics of the hydrologic regime are not material properties, and that inclusion of such parameters in the definition of HSUs severely reduces the regional applicability of such a categorical system. Consequently, Seaber (1988) proposed a redefinition of an HSU based on the characteristics of a rock's interstices, and defined an HSU as "a body of rock distinguished and characterized by its porosity and permeability."…”

Section: Geophysical Investigationsmentioning

confidence: 99%

“…Seaber (1988) argued that parameters related to the dynamics of the hydrologic regime are not material properties, and that inclusion of such parameters in the definition of HSUs severely reduces the regional applicability of such a categorical system. Consequently, Seaber (1988) proposed a redefinition of an HSU based on the characteristics of a rock's interstices, and defined an HSU as "a body of rock distinguished and characterized by its porosity and permeability." The stated purpose of Seaber (1988) was to "promote uniform and unambiguous methods to be used in partitioning any type of body of rock into hydrostratigraphic units, based on their inherent, mappable porosity and permeability."…”

Section: Geophysical Investigationsmentioning

confidence: 99%

“…Consequently, Seaber (1988) proposed a redefinition of an HSU based on the characteristics of a rock's interstices, and defined an HSU as "a body of rock distinguished and characterized by its porosity and permeability." The stated purpose of Seaber (1988) was to "promote uniform and unambiguous methods to be used in partitioning any type of body of rock into hydrostratigraphic units, based on their inherent, mappable porosity and permeability." Like rock-stratigraphic units, HSUs should be recognizable, mappable, traceable, and reproducible.…”

Section: Geophysical Investigationsmentioning

confidence: 99%

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A Hydrostratigraphic System for Modeling Groundwater Flow and Radionuclide Migration at the Corrective Action Unit Scale, Nevada Test Site and Surrounding Areas, Clark, Lincoln, and Nye Counties, Nevada

Prothro¹,

Drellack²,

Mercadante³

2009

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Underground Test Area (UGTA) corrective action unit (CAU) groundwater flow and contaminant transport models of the Nevada Test Site (NTS) and vicinity are built upon hydrostratigraphic framework models (HFMs) that utilize the hydrostratigraphic unit (HSU) as the fundamental modeling component. The delineation and three-dimensional (3-D) modeling of HSUs within the highly complex geologic terrain that is the NTS requires a hydrostratigraphic system that is internally consistent, yet flexible enough to account for overlapping model areas, varied geologic terrain, and the development of multiple alternative HFMs. The UGTA CAUscale hydrostratigraphic system builds on more than 50 years of geologic and hydrologic work in the NTS region. It includes 76 HSUs developed from nearly 300 stratigraphic units that span more than 570 million years of geologic time, and includes rock units as diverse as marine carbonate and siliciclastic rocks, granitic intrusives, rhyolitic lavas and ash-flow tuffs, and alluvial valley-fill deposits.The UGTA CAU-scale hydrostratigraphic system uses a geology-based approach and two-level classification scheme. The first, or lowest, level of the hydrostratigraphic system is the hydrogeologic unit (HGU). Rocks in a model area are first classified as one of ten HGUs based on the rock's ability to transmit groundwater (i.e., nature of their porosity and permeability), which at the NTS is mainly a function of the rock's primary lithology, type and degree of postdepositional alteration, and propensity to fracture.

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Section: Geophysical Investigationsmentioning

confidence: 99%

Section: Geophysical Investigationsmentioning

confidence: 99%

Section: Geophysical Investigationsmentioning

confidence: 99%

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A Hydrostratigraphic System for Modeling Groundwater Flow and Radionuclide Migration at the Corrective Action Unit Scale, Nevada Test Site and Surrounding Areas, Clark, Lincoln, and Nye Counties, Nevada

Prothro¹,

Drellack²,

Mercadante³

2009

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“…Furthermore, the interest in the late 1980's in naming aquifers and in prescribing rules for hydrostratigraphic nomenclature (Seaber, 1988) demonstrate the inaccuracy of his prediction.…”

Section: On Aquifermentioning

confidence: 99%

Selected contributions to ground-water hydrology by C.V. Theis, and a review of his life and work

Clebsch¹,

Theis²,

Appel³

et al. 1994

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“…Hydrostratigraphy is the classification of geologic structures in regard to their water-bearing characteristics (Maxey, 1964;Seaber, 1988). This work represents a continuation of efforts to understand the stratigraphy and hydrostratigraphy of these aquifers, based on a series of new geologic maps and studies along the outcrop of these aquifers.…”

Section: Introductionmentioning

confidence: 99%

Geologic framework, hydrostratigraphy, and ichnology of the Blanco, Payton, and Rough Hollow 7.5-minute quadrangles, Blanco, Comal, Hays, and Kendall Counties, Texas

Clark¹,

Golab²,

Morris³

2016

Scientific Investigations Map

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit http://store.usgs.gov.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.Suggested citation: Clark, A.K., Golab, J.A., and Morris, R.R., 2016, Geologic framework, hydrostratigraphy, and ichnology of the Blanco, Payton, and Rough Hollow 7.5-minute quadrangles, Blanco, Comal, Hays, and Kendall Counties, Texas (ver. 1.1, September 20, 2016) AcknowledgmentsThis study was completed on both public and private lands, and the authors would like to extend their thanks to the landowners and managers in Blanco, Comal, Hays, and Kendall Counties who provided access to their property, which greatly improved the completeness and accuracy of this study. Geologic AbstractThis report presents the geologic framework, hydrostratigraphy, and ichnology of the Trinity and Edwards Groups in the Blanco, Payton, and Rough Hollow 7.5-minute quadrangles in Blanco, Comal, Hays, and Kendall Counties, Texas.

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Hydrostratigraphic units

Cited by 35 publications

References 0 publications

A Hydrostratigraphic System for Modeling Groundwater Flow and Radionuclide Migration at the Corrective Action Unit Scale, Nevada Test Site and Surrounding Areas, Clark, Lincoln, and Nye Counties, Nevada

A Hydrostratigraphic System for Modeling Groundwater Flow and Radionuclide Migration at the Corrective Action Unit Scale, Nevada Test Site and Surrounding Areas, Clark, Lincoln, and Nye Counties, Nevada

Selected contributions to ground-water hydrology by C.V. Theis, and a review of his life and work

Geologic framework, hydrostratigraphy, and ichnology of the Blanco, Payton, and Rough Hollow 7.5-minute quadrangles, Blanco, Comal, Hays, and Kendall Counties, Texas

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