the analysis of cave dripwaters and cave calcite deposits with gis resources

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The Analysis of Cave Dripwaters and Cave Calcite Deposits with GIS Resources. Central Texas Cave Project. Central Texas Cave Project. Constituents of Concern Include:. Central Texas Cave Project. Constituents of Concern Include: Driprates of Cave Dripwaters. Pic of Dripping stalagtite. - PowerPoint PPT Presentation

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  • The Analysis of Cave Dripwaters and Cave Calcite Deposits with GIS Resources

  • Central Texas Cave Project

  • Central Texas Cave ProjectConstituents of Concern Include:

  • Central Texas Cave ProjectConstituents of Concern Include:

    Driprates of Cave DripwatersPic of Dripping stalagtite

  • Central Texas Cave ProjectConstituents of Concern Include:

    Calcite Growth

  • Central Texas Cave ProjectConstituents of Concern Include:

    Dripwater Geochemistry

  • Central Texas Cave ProjectConstituents of Concern Include:

    Dripwater Geochemistry

    pHConductivityMajor IonsIsotopic Compositions (Oxygen, Deuterium, Carbon)Alkalinity

  • What affects the geochemistry of these waters? What affects the rates of calcite growth?

  • Project ObjectivesPrecipitationOverlying SoilsLand CoverUse GIS to determine:

  • Study AreaCaverns of Sonora

    Natural Bridge Caverns

    Innerspace Caverns

  • Project ObjectivesPrecipitationOverlying SoilsLand CoverUse GIS to determine:

  • Texas Average Annual PrecipitationSource: Texas Water Development Board

  • Central Texas Average Annual PrecipitationSource: Texas Water Development Board

  • Central Texas Average Annual PrecipitationCaverns of Sonora lies within 20-22 inches per year

    Source: Texas Water Development Board

  • Central Texas Average Annual PrecipitationCaverns of Sonora lies within 20-22 inches per yearNatural Bridge Caverns and Innerspace Caverns lie within 30-35 inches per year

    Source: Texas Water Development Board

  • Are differences in precipitation evident in cave driprates?

  • DripratesCaverns of Sonora has average driprates much smaller than Innerspace Caverns and Natural Bridge Caverns

  • Are differences in precipitation evident in cave calcite growth?

  • Calcite Precipitation Caverns of Sonora isnt growing much calcite!

  • Project ObjectivesPrecipitationOverlying SoilsLand CoverUse GIS to determine:

  • Are differences in soil type above each cave evident in cave dripwater geochemistry?

  • Source: Statsgo Soil Database

  • Caverns of Sonora- MUID TX544Natural Bridge Caverns- MUID TX105Innerspace Caverns- MUID TX153Source: Statsgo Soil Database

  • Natural Bridge CavernsInnerspace CavernsCaverns Of SonoraSource: Statsgo Soil Database

  • Project ObjectivesPrecipitationOverlying SoilsLand CoverUse GIS to determine:

  • How do differences in land cover change the geochemistry of the cave dripwaters?

  • Source: NLCD 1992 Land Cover Dataset

  • Caverns of SonoraInnerspace CavernsNatural Bridge CavernsSource: NLCD 1992 Land Cover Dataset

  • ConclusionsGIS is a useful tool for delineating spatial heterogeneity over land surfaces

    GIS is useful in bringing together many different parameters in which relationships may exist

  • Future Work

    Determine other factors (fractures, bedrock, evapotranspiration) that may be influencing the different chemical constituents that are analyzed in the caves

    Use tracking analyst to determine driprate and geochemical response to rainfall events

    This is a project that I have been working on for awhile now, a part of this project has become the subject of my thesis. This projects main objective is to collect dripwater falling off of stalagtites like these, and actually grow calcite on plates that we put under the stalagitites.. When we collect the dripwater, we also record:

    When we collect the dripwater, we also record:

    The driprates of the drip sites are measured, which can give an idea of how quickly water infiltrating from the surface flows through the vadose zone and into the cave.. We collect calcite on plates on a monthly basis to get an idea of how fast this calcite is growing, and how this may change with climate. Also, the mineralogy of the calcite that we collect on the plates can change with climate which is representative of the water that feeds the calcite that is changing with climate, and has the potential to back out paleoclimate by analyzing calcite that precipitated thousands of years ago So the water that we collect from the dripping stalagtites is analyzed for a number of constituents including

    And alkalinityLooking at the data collected in these caves we can see changes between the three caves, and these changes can be the result of many factors.I will use GIS to determine precipitation, ovelying soils and land cover across the area of the caves and figure out how these enivronmental parameters can change certain constituents that we analyze in the caves. So where do we go to analyze these things? Well, three show caves in central texas were chosen for their ease of entry and the fact that they are actively growing lots of calcite. There are many caves that you can go into that do not actively grow calcite and do not have water dripping in them, which is a subject of a whole different type. These caves are spaced out quite a bit, so you might expect some good differences in precipitation, soil cover, and land cover.I will use GIS to determine precipitation, ovelying soils and land cover across the area of the caves and figure out how these enivronmental parameters can change certain constituents that we analyze in the caves. I will use GIS to determine precipitation, ovelying soils and land cover across the area of the caves and figure out how these enivronmental parameters can change certain constituents that we analyze in the caves. I will use GIS to determine precipitation, ovelying soils and land cover across the area of the caves and figure out how these enivronmental parameters can change certain constituents that we analyze in the caves.

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