One paper describes the minor elements in metal deposits in sedimentary rocks, focusing on geochemical work on certain classes of ores in sediments and on the theories of origin of the deposits. The paper estimates that the quantities of material that can be accumulated in a sediment horizon with a great affinity for these materials, say in a period of one billion years, will still not be sufficient to produce a large ore deposit. Authors: ; ; ; Publication Date: 1949-01-01 Research Org. The factor or element association shows high loadings for cadmium, barium and nickel, meaning a high degree of correlation of these elements with this factor. Deep soils were chosen to ensure the presence of carbonate for dissolution in acid and release of occluded hydrocarbons. Similarly, urbanization of the region north and east of Taylor Slough may be producing emissions that are contaminating Taylor Slough with toxic metals especially mercury and other urban pollutants.
Department of the Interior, U. I, Principles and general studies, Volume 2, Geochemical studies Author: K H Wolf Publisher: Amsterdam : Elsevier Scientific Publishing Company, 1976. The slough extends south for about 27 kilometers to Florida Bay, gradually widening along the way. Factor scores, which increase as element correlations increase i. Sediments are an important repository of integrated information on the water quality and chemical composition of the slough now and in the past. The weight percent oil in each phase can be calculated by comparison of fluorescence responses of crude oil standard with known concentrations. The paper estimates the necessary diffusion coefficients that occur in deep structures, where increased mobilities of various substances occur.
Extensive construction of canals throughout the Everglades has greatly altered the natural freshwater flow of the ecosystem. A total of 639, 15 meter deep, shot-hole sediments were collected at 720 meter intervals along 460 km of seismic lines by the seismic crew. Analyses of these chemical components in sediments, sediment pore water water within the sediment , surface water, and aquatic vegetation are being conducted in support of the project objectives. The lithium and magnesium anomalies in soils therefore probably reflect leakage of produced water along high angle normal faults. This soil gas survey, in conjunction with 3D seismic, would have helped guide the drilling of the Shirley Rother oil well. Soil samples, which were collected from 50 cm depth at 320 meter intervals over and around the field, were analyzed for major and trace elements Figure 17. Dissolved reactive phosphate micromoles per liter Figure 4.
Groundwater proved to be a useful medium for conducting this survey as thermogenic hydrocarbons were identified fulfilling the objective of the survey. Information on the paleoenvironmental conditions of the ecosystem will provide land managers with a framework from which the goals of ecosystem restoration can be defined. Fresh to weathered oil microseeps are evident over and around the Roncott oil field and they also cluster along the Prairie Evaporite Salt Dissolution edge blue dashed line in the northeast part of the survey area Figure 22. MnP mediated oxidation can be limited by carbon and low C:N ratios. Minor Elements in Metal Deposits in Sedimentary Rocks - A Review of the Recent Literature Introduction Classification of Deposits Minor-Element Data Compilation Stratabound Galena-Shalerite in Carbonates Stratiform Massive Sulphide Deposits Stratabound Cu-U-V Deposits in Arenaceous Rocks Significance of Minor Elements Discussion of Ore Genesis Stratabound Lead-Zinc in Carbonates Stratiform Massive Sulphides Metal Deposits in Argillaceous Rocks Stratabound Cu-U-V Deposits in Arenaceous Rocks Modern Metalliferous Sediments Conclusions Acknowledgements References Chapter 2. The samples have similar features: fine texture of the ceramic body, and black gloss painted directly on it.
Sedimentary, Geochemistry and Mineralogy of the Sulfides of Lead, Zinc, Copper and Iron and their Occurrence in Sedimentary Ore Deposits Introduction Aspects of Pb, Zrr, Cu, and Fe Chemistry and Geochemistry Lead Zinc Copper Iron Crystal-Field Theory and the Geochemistry of Fe and Cu Distribution of Pb, Zn, Cu, and Fe in the Earth Pb, Zn, Cu, anf Fe Sulfide Minerals of Sedimentary Association Structures and Compositions of the Major Minerals Forms and Textures of the Minerals Mineral Composition as an Indication of Formation Conditions Pb, Zn, Cu, and Fe Sulfides in Aqueous Systems Eh - pH and Partial Pressure Diagrams Equilibria Amongst Lead Compounds Equilibria Amongst Zinc Compounds Equilibria Amongst Copper and Copper-Iron Compounds Equilibria Amongst Iron Compounds Transport and Depositional Phenomena Involving Pb, Zn, Cu, and Fe Sulfides Solubilities and Complex Formation Depositional Reactions, Depositional Systems, and Surface Phenomena Examples of Sedimentary Environments Containing Pb, Zn, Cu, and Fe Sulfides Modern Environments Copper and Iron Sulfide Concentrations in Sedimentary Environments Lead-Zinc Sulfide Ores Concluding Remarks Acknowledgements References. This combination of approaches will provide detailed information on the past environmental paleoenvironmental conditions of the ecosystem, both chemical and biological. Figure 20 shows a proportional symbol plot of log-transformed C2+ hydrocarbon concentrations in shot-hole sediments. Headspace and dissolved ethane anomalies are evident in 5 of the 14 water wells samples Figure 12. Figure 29 shows a proportional symbol plot of headspace pentane C5 concentrations in the lake sediments.
Some of these microseeps were drilled in conjunction with 3D seismic information. The left-lateral wrench fault at the southern boundary of the field may have produced fractures that are responsible for the shallower, 2500-foot thick gas column and apparent higher permeability at Jonah compared with other parts of the basin. The unique composition of oil field waters at Grant Canyon compared with dry reservoirs, suggests this geochemical method could be useful in finding other Grant Canyon-like oil fields. Net reservoir thickness is 129 meters over a 960-acre area. The paper estimates the necessary diffusion coefficients that occur in deep structures, where increased mobilities of various substances occur.
Two anomalies are also found within 100 to 300 meters south of a temporarily abandoned gas well in the northern part of the survey area. Geochemical Studies is a collection of papers dealing with ore petrology, particularly on the genesis of ores found in sediments. Geochemical Insight reinterpreted and plotted the data back in 2016. Taylor Slough begins about 3 kilometers north of the park road crossover, near the L31W canal southwest of Homestead. Effect of Freshwater Flow from Taylor Slough on Florida Bay Taylor Slough is much smaller than Shark River Slough in both areal extent and total water discharge but still plays an important role in regulating fresh-water flow and water quality in Florida Bay. The procedure can be used for uranium concentrations of not less than 0. Sulphur and Lead Isotopes in Strata-Bound Deposits Introduction Sulphur Isotopes General Theory Abundance Fractionation of Sulphur Isotopes Influence of Sulphur Species on Sulphur Isotopic Abundances Sulphur Isotopes in Strata-Bound Deposits Deposits Enclosed in Marine Host Rocks Discussion Deposits Enclosed in Rocks of Continental or Near Continental Origin Deposits of the Conglomerate-U -Au Type Lead Isotopes General Theory Lead Isotopes in Strata-Bound Sulphide Deposits Volcanogenic Massive Sulphide Deposits Carbonate-Hosted Lead- Zinc Deposits Discussion References Chapter 9.
Emphasis is being placed on studies of nutrients and sulfur - key chemical components for the biolocical resources of the ecosystem. This work will contribute to our understanding of biogeochemical processes and paleoenvironmental conditions in Taylor Slough. In essence, sloughs are the broad, shallow rivers of the Everglades. Geologists, geochemists, and engineers working with fossil fuels will find the collection highly significant. The oil microseeps look more like oil from the Mississippian Leadville Limestone hosted reservoir. Map of Taylor Slough area. In other regions of the Everglades, similar levels of pore-water sulfide have been shown to be permissive of significant methyl mercury production.