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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 The Analysis of Cave Dripwaters and Cave Calcite Deposits with GIS and Cave Calcite Deposits with GIS
ResourcesResources
Central Texas Cave ProjectCentral Texas Cave Project
Central Texas Cave ProjectCentral Texas Cave Project
Constituents of Concern Include:Constituents of Concern Include:
Central Texas Cave ProjectCentral Texas Cave Project
Constituents of Concern Include:Constituents of Concern Include:
Driprates of Cave DripwatersDriprates of Cave Dripwaters
Pic of Dripping stalagtite
Central Texas Cave ProjectCentral Texas Cave Project
Constituents of Concern Include:Constituents of Concern Include:
Calcite GrowthCalcite Growth
Central Texas Cave ProjectCentral Texas Cave Project
Constituents of Concern Include:Constituents of Concern Include:
Dripwater GeochemistryDripwater Geochemistry
Central Texas Cave ProjectCentral Texas Cave Project
Constituents of Concern Include:Constituents of Concern Include:
Dripwater GeochemistryDripwater Geochemistry
pHpH ConductivityConductivity Major IonsMajor Ions Isotopic Compositions Isotopic Compositions
(Oxygen, Deuterium, Carbon)(Oxygen, Deuterium, Carbon) AlkalinityAlkalinity
What affects the geochemistry of these What affects the geochemistry of these waters? What affects the rates of calcite waters? What affects the rates of calcite growth? growth?
Project ObjectivesProject Objectives
1)1) PrecipitationPrecipitation
2)2) Overlying SoilsOverlying Soils
3)3) Land CoverLand Cover
Use GIS to determine:
Study AreaStudy Area
Caverns of Sonora Caverns of Sonora
Natural Bridge CavernsNatural Bridge Caverns
Innerspace CavernsInnerspace Caverns
Project ObjectivesProject Objectives
1)1) PrecipitationPrecipitation
2)2) Overlying SoilsOverlying Soils
3)3) Land CoverLand Cover
Use GIS to determine:
Texas Average Annual Texas Average Annual PrecipitationPrecipitation
Source: Texas Water Development Board
Central Texas Average Annual Central Texas Average Annual PrecipitationPrecipitation
Source: Texas Water Development Board
Central Texas Average Annual Central Texas Average Annual PrecipitationPrecipitation
Caverns of Sonora lies Caverns of Sonora lies within within 20-22 inches20-22 inches per per yearyear
Source: Texas Water Development Board
Central Texas Average Annual Central Texas Average Annual PrecipitationPrecipitation
Caverns of Sonora lies Caverns of Sonora lies within within 20-22 inches20-22 inches per per yearyear
Natural Bridge Caverns Natural Bridge Caverns and Innerspace Caverns lie and Innerspace Caverns lie within within 30-35 inches30-35 inches per per yearyear
Source: Texas Water Development Board
Are differences in precipitation Are differences in precipitation evident in cave driprates?evident in cave driprates?
DripratesDriprates
Caverns of Sonora has Caverns of Sonora has average driprates average driprates much smaller than much smaller than Innerspace Caverns Innerspace Caverns and Natural Bridge and Natural Bridge CavernsCaverns
Are differences in precipitation Are differences in precipitation evident in cave calcite growth?evident in cave calcite growth?
Calcite Precipitation Calcite Precipitation
Caverns of Sonora isn’t Caverns of Sonora isn’t
growing much calcite!growing much calcite!
Project ObjectivesProject Objectives
1)1) PrecipitationPrecipitation
2)2) Overlying SoilsOverlying Soils
3)3) Land CoverLand Cover
Use GIS to determine:
Are differences in soil type above Are differences in soil type above each cave evident in cave each cave evident in cave dripwater geochemistry?dripwater geochemistry?
Source: Statsgo Soil Database
Caverns of Sonora- MUID TX544
Natural Bridge Caverns- MUID TX105
Innerspace Caverns- MUID TX153
Source: Statsgo Soil Database
Natural Bridge Caverns
Innerspace Caverns
Caverns Of Sonora
Source: Statsgo Soil Database
Project ObjectivesProject Objectives
1)1) PrecipitationPrecipitation
2)2) Overlying SoilsOverlying Soils
3)3) Land CoverLand Cover
Use GIS to determine:
How do differences in land cover How do differences in land cover change the geochemistry of the change the geochemistry of the
cave dripwaters?cave dripwaters?
Source: NLCD 1992 Land Cover Dataset
Caverns of SonoraCaverns of SonoraInnerspace CavernsInnerspace Caverns
Natural Bridge CavernsNatural Bridge Caverns
Source: NLCD 1992 Land Cover Dataset
ConclusionsConclusions
GIS is a useful tool for delineating spatial GIS is a useful tool for delineating spatial heterogeneity over land surfacesheterogeneity over land surfaces
GIS is useful in bringing together many GIS is useful in bringing together many different parameters in which relationships different parameters in which relationships may existmay exist
Future WorkFuture Work
Determine other factors (fractures, Determine other factors (fractures, bedrock, evapotranspiration) that may be bedrock, evapotranspiration) that may be influencing the different chemical influencing the different chemical constituents that are analyzed in the cavesconstituents that are analyzed in the caves
Use tracking analyst to determine driprate Use tracking analyst to determine driprate and geochemical response to rainfall and geochemical response to rainfall eventsevents