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Geology

FIU Electronic Theses and Dissertations

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Determination Of Hydraulic Conductivity And Dispersivity In The Biscayne Aquifer, Taylor Slough, Everglades National Park, Jose Dioscoro Altomia Guardiario Jr. Nov 1995

Determination Of Hydraulic Conductivity And Dispersivity In The Biscayne Aquifer, Taylor Slough, Everglades National Park, Jose Dioscoro Altomia Guardiario Jr.

FIU Electronic Theses and Dissertations

Knowledge of the properties of the Biscayne Aquifer is critical to the understanding of groundwater solute transport problems that affect the Everglades region. To add to our knowledge of the aquifer, geologic logging of cores and hydraulic conductivity measurements were performed in 18 fullypenetrating wells using an electromagnetic borehole flowmeter. Corelogs, ambient flow profiles, and hydraulic conductivity (K) values measured in the study site indicate that the Biscayne Aquifer has a hydraulic conductivity with a geometric mean of 0.18 meter/second and a variance of 2.5 , and can be divided into two distinct layers: the Upper Biscayne Aquifer and the …

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Areal And Vertical Distribution Of Total Soil Mercury And Total Phosphorusin The Southern Half Of Water Conservation Area 3-A, Everglades, Southern Florida, Cleone Botelho Arfstrom Jun 1995

Areal And Vertical Distribution Of Total Soil Mercury And Total Phosphorusin The Southern Half Of Water Conservation Area 3-A, Everglades, Southern Florida, Cleone Botelho Arfstrom

FIU Electronic Theses and Dissertations

Total soil-mercury and phosphorus concentrations were determined in 64 sites in the southern half of Water Conservation Area 3A, an area of approximately 500 km2 . Surface soil-Hg concentrations ranged from 117 to 300 ng-g-1;
total phosphorus concentrations range from 350 to 850 pg~g-1. No consistent north-south or east-west trends are found in the mercury or phosphorus surface concentrations when they are normalized to soil bulk density. Nine sites were used for the determination of the vertical distribution of soilmercury. Vertical profiles of soil-Hg revealed decreasing concentrations with depth and correlated well with phosphorus in …

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Vent Alignments In San Francisco Volcanic Field, Arizona : Statistical Analysis And Assessment Of Structural Controls, Zhuoning Chen Jan 1994

Vent Alignments In San Francisco Volcanic Field, Arizona : Statistical Analysis And Assessment Of Structural Controls, Zhuoning Chen

FIU Electronic Theses and Dissertations

Using cluster analysis, a total of 605 vents in San Francisco Volcanic Field are studied over an area of approximately 5000km2. Application of alignment analysis techniques, including the two-point azimuth analysis and Hough transform analysis, demonstrates that cinder cones are aligned along common orientations within larger clusters. These alignments consist of 9-10 cinder cones, are 20-38 km long, and are regional features. The vent alignments indicate the presence of geological features along which magma ascended more readily than elsewhere. The NE-trending Mesa Butte and Oak Creek Canyon-Doney fault systems seem to control the intermediate to silicic centers which …

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Petrology And Geochemistry Of Some High Pressure Rocks From Northern Part Of Rio San Juan Complex, Dominican Republic, Khandaker I. Anam Nov 1993

Petrology And Geochemistry Of Some High Pressure Rocks From Northern Part Of Rio San Juan Complex, Dominican Republic, Khandaker I. Anam

FIU Electronic Theses and Dissertations

The Rio San Juan Complex is an important occurrence of high pressure/low temperature rocks in the circum-Caribbean region which contains both coherent blueschist units and two varieties of melange in the same area. The melanges contain a diverse assemblage of blocks of various sizes, different degrees of metamorphism, and mineral assemblages. Some high pressure blocks show two stages of metamorphism. The earliest stage is characterized by high pressure-low temperature conditions and the second stage is characterized by high pressure-lower temperature conditions. The geochemistry of thirteen samples from the Rio San Juan Complex has been studied and data have been compared …

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A Model Of The Hydrothermal System At Casa Diablo In Long Valley, California, Based On Resistivity Profiles And Soil Mercury Analyses, John David Arfstrom Jul 1993

A Model Of The Hydrothermal System At Casa Diablo In Long Valley, California, Based On Resistivity Profiles And Soil Mercury Analyses, John David Arfstrom

FIU Electronic Theses and Dissertations

A description and model of the near-surface hydrothermal system at Casa Diablo, with its implications for the larger-scale hydrothermal system of Long Valley, California, is presented. The data include resistivity profiles with penetrations to three different depth ranges, and analyses of inorganic mercury concentrations in 144 soil samples taken over a 1.3 by 1.7 km area. Analyses of the data together with the mapping of active surface hydrothermal features (fumaroles, mudpots, etc.), has revealed that the relationship between the hydrothermal system, surface hydrothermal activity, and mercury anomalies is strongly controlled by faults and topography. There are, however, more subtle factors …

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Depth-Related Variations Of Trace Metal Abundances In South Florida Sediments, Donna Wade Booth Jul 1992

Depth-Related Variations Of Trace Metal Abundances In South Florida Sediments, Donna Wade Booth

FIU Electronic Theses and Dissertations

Variations in trace element abundances with depth in soils and sediments may be due to natural processes or reflect anthropogenic influences. The depth related variations of five major elements (Fe, Si, Al, Ca and Mg), seventeen trace elements (Mn, Cr, Ti, P, Ni, Ba, Sc, Sr, Sb, Zn, Pb, Cd, Co, V, Be, Cu and Y) and volatile loss patterns were examined for sediment cores from five sites in South Florida (Lake Okeechobee, SFWMD Water Conservation area 3B, F.I.U., the Everglades and Chekika State Recreation Area). Principal component analysis of the chemical data combined with microscopic examination of the soils …

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An Experimental Petrologic And Geochemical Study Of Deccan Trap Basalts : Part I, Deccan Traps From Tamia, Central India ; Part Ii, Crystallization Relationships Of Deccan Basalts At 6.35 Kbars, Tobi Helene Cohen Jan 1989

An Experimental Petrologic And Geochemical Study Of Deccan Trap Basalts : Part I, Deccan Traps From Tamia, Central India ; Part Ii, Crystallization Relationships Of Deccan Basalts At 6.35 Kbars, Tobi Helene Cohen

FIU Electronic Theses and Dissertations

New major, minor, and trace element data for the Chakhla- Delakari sill and three nearby lava flows in the proximal area of Tamia are presented. Based on abundances of trace elements, it is inferred that the sill was the feeder of the two uppermost lava flows which tapped magmas from a LREE-, Rb-enriched source. The oldest (lowermost) flow shows greater affinity with the western Deccan lavas. The association of the feeder sill with a large network of parallel trending sills and dikes, and the elongate Satpura Dome, is taken to infer that a major locus of eruption of the Deccan …

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