TITLE

Hydrogeology of the Potsdam Sandstone in Northern New York

AUTHOR(S)
Williams, John H.; Reynolds, Richard J.; Franzi, David A.; Romanowicz, Edwin A.; Paillet, Frederick L.
PUB. DATE
December 2010
SOURCE
Canadian Water Resources Journal/Revue Canadienne des Ressources;Winter2010, Vol. 35 Issue 4, p399
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The Potsdam Sandstone of Cambrian age forms a transboundary aquifer that extends across northern New York and into southern Quebec. The Potsdam Sandstone is a gently dipping sequence of arkose, subarkose, and orthoquartzite that unconformably overlies Precambrian metamorphic bedrock. The Potsdam irregularly grades upward over a thickness of 450 m from a heterogeneous feldspathic and argillaceous rock to a homogeneous, quartz-rich and matrix-poor rock. The hydrogeological framework of the Potsdam Sandstone was investigated through an analysis of records from 1,500 wells and geophysical logs from 40 wells, and through compilation of GIS coverages of bedrock and surficial geology, examination of bedrock cores, and construction of hydrogeological sections. The upper several metres of the sandstone typically is weathered and fractured and, where saturated, readily transmits groundwater. Bedding-related fractures in the sandstone commonly form sub-horizontal flow zones of relatively high transmissivity. The vertical distribution of sub-horizontal flow zones is variable; spacings of less than 10 m are common. Transmissivity of individual flow zones may be more than 100 m2/d but typically is less than 10 m2/d. High angle fractures, including joints and faults, locally provide vertical hydraulic connection between flow zones. Hydraulic head gradients in the aquifer commonly are downward; a laterally extensive series of sub-horizontal flow zones serve as drains for the groundwater flow system. Vertical hydraulic head differences between shallow and deep flow zones range from 1 m to more than 20 m. The maximum head differences are in recharge areas upgradient from the area where the Chateauguay and Chazy Rivers, and their tributaries, have cut into till and bedrock. Till overlies the sandstone in much of the study area; its thickness is generally greatest in the western part, where it may exceed 50 m. A discontinuous belt of bedrock pavements stripped of glacial drift extends across the eastern part of the study area; the largest of these is Altona Flat Rock. Most recharge to the sandstone aquifer occurs in areas of thin, discontinuous till and exposed bedrock; little recharge occurs in areas where this unit is overlain by thick till and clay. Discharge from the sandstone aquifer provides stream and river baseflow and is the source of many springs. A series of springs that are used for municipal bottled water and fish-hatchery supply discharge from 1,000 to 5,000 L/min adjacent to several tributaries east of the Chateauguay River. The major recharge areas for the Chateauguay springs are probably upgradient to the southeast, where the till cover is thin or absent.
ACCESSION #
58487103

 

Related Articles

  • Buried-valley aquifers in the Canadian Prairies: geology, hydrogeology, and origin. Cummings, Don I.; Russell, Hazen A.J.; Russell, David R. // Canadian Journal of Earth Sciences;Sep2012, Vol. 49 Issue 9, p987 

    We review over 100 years of literature on Prairie buried valleys to provide a platform for future research and policy development. Prairie buried-valley fills commonly function as aquifers that yield abundant groundwater. They have distinct geologies and a distinct stratigraphic setting, which...

  • Characterization of a Regional Aquifer System in the Maritimes Basin, Eastern Canada. Rivard, Christine; Michaud, Yves; Lefebvre, RenĂ©; Deblonde, Christine; Rivera, Alfonso // Water Resources Management;Nov2008, Vol. 22 Issue 11, p1649 

    A regional hydrogeological study was carried out in the Maritimes provinces, in one of the main aquifer systems in Canada. The study area covers a land surface of 10,500 km2, of which 9,400 km2 is over Carboniferous and younger rocks. The sedimentary fractured bedrock is composed of a sequence...

  • Field evidence of hydraulic connections between bedrock aquifers and overlying granular aquifers: examples from the Grenville Province of the Canadian Shield. Richard, Sandra; Chesnaux, Romain; Rouleau, Alain; Morin, Roger; Walter, Julien; Rafini, Silvain // Hydrogeology Journal;Dec2014, Vol. 22 Issue 8, p1889 

    Field evidence of hydraulic connections between a bedrock aquifer and an overlying granular aquifer in the Canadian Shield (Grenville Province) is presented. This issue is rarely considered and investigated despite its important hydraulic and chemical consequences and its widespread occurrence...

  • Delineation of the Aquifer in the Curin Basin, South of Zahedan City, Iran. Nejad, Hadi Tahmasbi; Hoseini, Fatemeh Zakeri; Mumipour, Mehdi; Kaboli, Abdolreza; Najib, Morteza // Open Geology Journal;2012, Vol. 6, p1 

    Resistivity method using 596 Schlumberger vertical electrical soundings along 26 profiles are conducted in the Curin basin, Iran to investigate the sub-surface layering and aquifer characteristics. The results of quantitative and qualitative interpretation of data reveal four layers. The true...

  • Life in the Precambrian. Levy, Allen W. // Sciences;May/Jun76, Vol. 16 Issue 3, p6 

    Describes the form of life during the precambrian period. Account of the early formation of life on earth; Chronological order of the evolutionary advances of life; Discoveries of precambrian fossils.

  • Precambrian-Cambrian boundary global stratotype ratified and a new perspective of Cambrian time... Rozanov, A. Yu.; Landing, Ed // Geology;Mar95, Vol. 23 Issue 3, p285 

    Comments on the article `Precambrian-Cambrian boundary global stratotype ratified and new perspective of Cambrian time,' by Ed Landing published in `Geology,' Volume 22, 1994. Misconceptions on small shelly fossils (SSF); Gap between the Manykay and Tommotian stages; Justification of combined...

  • The relationship between the open fractures and mineralized fractures in Oligocene sandstones of Leghorn coast (Tuscany, Italy) - the hydrogeological relapses. Feroni, A. Cerrina; Martinelli, P. // Hydrology & Earth System Sciences Discussions;2010, Vol. 7 Issue 2, p2301 

    The Oligocene-Miocene turbidite sandstones of fore-deep in the Northern Apennines form a very great aquifer that originally, before the reduction by Plio-Pleistocene erosion, is extended over an area of 60 000 sq/km (minimum) to 1.5 km-4.5 km tickness. The spatial relationships between the open...

  • Nd isotopic study of Precambrian crust basement of South Korea: Evidence for Early Archean crust? Lan, Ching-Ying; Lee, Typhoon // Geology;Mar95, Vol. 23 Issue 3, p249 

    Discusses the Sm-Nd isotopic study of Precambrian basement of South Korea. Implications of a long history of crustal evolution as evidenced from the basement rocks; Variations in TDM of South Korea; Discovery of Early Archean basement rocks; Correlations between South Korea and East China.

  • Closer look cures an evolutionary hiccup. Hecht, Jeff // New Scientist;11/4/95, Vol. 148 Issue 2002, p19 

    Reports on the impact of the results of the dating of volcanic rocks in Namibia on the study of the evolution of multicellular animals. Absence of a lull between the heyday of the Ediacara fauna in the Pre-cambrian period and the earliest representatives of the `Cambrian explosion'; Discovery...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics