Sunday, September 05, 2010

Karst hydrology of Grand Canyon

Carol Hill and Victor Polyak passed along news that their paper on karst hydrology of the Grand Canyon has been published. They conclude that "The karst hydrology of Grand Canyon may be unique compared to other hypogene cave areas of the world." [right, Figure 13 from the paper: "Gypsum rind in an eastern Grand Canyon cave. This is not a speleothemic gypsum crust but a speleogenetic gypsum rind that formed just above the water table as a replacement of the limestone bedrock." Photo by Bob Buecher]
"Descent of the potentiometric surface (or water table) over time is recorded by one ore episode and six cave episodes: (1) emplacement of Cu–U ore, (2) precipitation of iron oxide in cavities, (3) dissolution of cave passages, (4) precipitation of calcite-spar linings over cave passage walls, (5) precipitation of cave mammillary coatings, (6) minor replacement of cave wall and ceiling limestone by gypsum, and (7) deposition of subaerial speleothems."

Ref: "Karst Hydrology of Grand Canyon, Arizona, USA," C.A. Hill, & V.J. Polyak, Sept. 2010, Journal of Hydrology, v. 390, p. 169-181.


  1. Price: US $ 37.95 expensive

    the number of similar Journal's of Hydrology are hundreds, in Hindostanic, Russia Poland France , no college have the funds to have subscriptions of all the principal paper's

    plenty of good works are free
    for instance
    in some weeks the article in pdf
    can reach millions
    in this way some big colleges with subscriptions of this data base
    and a public of what ?
    5 or 10,000 around the globe in one year or two?

    Holography and Related Topics in String Theory
    A thesis presented
    David Mattoon Thompson
    The Department of Physics

    Harvard of course

  2. oh...and the picture
    lacks definition...a good resolution one

    is somewhere?
    in the pdf i s'pose