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Biscayne Aquifer geologic data

Entry ID: USGS_SOFIA_ba_geologic_data

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Summary

Abstract: This report from which the data is taken identifies and characterizes candidate ground-water flow zones in the upper part of the shallow, eogenetic karst limestone of the Biscayne aquifer using GPR, cyclostratigraphy, borehole geophysical logs, continuously drilled cores, and paleontology. About 60 mi of GPR profiles were acquired and are used to calculate the depth to shallow geologic contacts ... and hydrogeologic units, image karst features, and produce a qualitative perspective of the porosity distribution within the upper part of the karstic Biscayne aquifer in the Lake Belt area of north-central Miami-Dade County. . Descriptions of lithology, rock fabric, cyclostratigraphy, and depositional environments of 50 test coreholes were linked to geophysical data to provide a more refined hydrogeologic framework for the upper part of the Biscayne aquifer. Interpretation of depositional environments was constrained by analysis of depositional textures and molluscan and benthic foraminiferal paleontology. Digital borehole images were used to help quantify large-scale vuggy porosity. Preliminary heat-pulse flowmeter data were coupled with the digital borehole image data to identify potential ground-water flow zones.

The objectives of this cooperative project were to identify and characterize candidate ground-water flow zones in the upper part of the shallow, eogenetic karst limestone of the Biscayne aquifer using ground-penetrating radar, cyclostratigraphy, borehole geophysical logs, continuously drilled cores and paleontology. In 1998, the U.S. Geological Survey (USGS), in cooperation with the South Florida Water Management District (SFWMD), initiated a study to provide a regional-scale hydrogeologic framework of a shallow semiconfining unit within the Biscayne aquifer of southeastern Florida. Initially, the primary objective was to characterize and delineate a low-permeability zone in the upper part of the Biscayne aquifer that spans the base of the Miami Limestone and uppermost part of the Fort Thompson Formation. Delineation of this zone was to aid development of a conceptual hydrogeologic model to be used as input into the SFWMD Lake Belt ground-water model. The approximate area encompassed by the conceptual hydrogeologic model is shown as the study area at http://sofia.usgs.gov/exchange/cunningham/bbwelllocation.html. Subsequent analysis of the preliminary data suggested hydraulic compartmentalization occurred within the Biscayne aquifer, and that there was a need to characterize and delineate ground-water flow zones and relatively low-permeability zones within the upper part of the Biscayne aquifer. Consequently, preliminary results suggested that the historical understanding of the porosity and preferential pathways for Biscayne aquifer ground-water flow required considerable revision.

This project was carried out in cooperation with the South Florida Water Management District (SFWMD).

Related URL

Link: GET DATA

Description: Log onto the SOFIA website at http://sofia.usgs.gov

Multimedia Sample

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Description: Figure 1: map showing study area, Federal and State lands, and agricultural areas in southern Florida

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Description: Figure 2: map showing location of test corehole location and number

Geographic Coverage

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Spatial coordinates

N: 26.0

S: 25.5

E: -80.3

W: -80.6

Data Set Citation

Dataset Originator/Creator: Cunningham, Kevin J. Carlson, Janine L., Wingard, G. Lynn , Robinson, Edward, Wacker, Michael A.

Dataset Title: Biscayne Aquifer geologic data

Dataset Release Date: 2005

Data Presentation Form: data tables

Online Resource: http://sofia.usgs.gov/projects/aq_heterogeneity/#data

Temporal Coverage

Start Date: 1998-01-01

Stop Date: 2005-12-31

Location Keywords

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > FLORIDA

Science Keywords

BIOSPHERE > TERRESTRIAL ECOSYSTEMS > WETLANDS

BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > MOLLUSKS

ISO Topic Category

BIOTA

ENVIRONMENT

GEOSCIENTIFIC INFORMATION

INLAND WATERS

Project

USGS_SOFIA > South Florida Information Access

Access Constraints None

Use Constraints None

Ancillary Keywords

Miami-Dade County

Everglades National Park

Data Set Progress

COMPLETE

Data Center

SOUTH FLORIDA INFORMATION ACCESS, FLORIDA INTEGRATED SCIENCE CENTER, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF THE INTERIOR

Data Center URL: http://sofia.usgs.gov/

Data Center Personnel
Name: HEATHER S. HENKEL Phone: 727.803.8747 ext. 3028 Fax: 727.803.2032 Email: hhenkel at usgs.gov Contact Address: USGS-FISC-St. Petersburg 600 Fourth St. South City: St. Petersburg Province or State: FL Postal Code: 33701 Country: USA

Distribution

Distribution Format: HTML

Fees: None

Personnel

KEVIN CUNNINGHAM

Role: TECHNICAL CONTACT

Phone: (954) 377-5913

Fax: (954) 377-5901

Email: kcunning at usgs.gov

Contact Address:

U.S. Geological Survey

3110 SW 9th Avenue

City: Ft. Lauderdale

Province or State: FL

Postal Code: 33315

Country: USA

ALICIA ALEMAN

Role: DIF AUTHOR

Email: alicia.m.aleman at nasa.gov

Contact Address:

Goddard Space Flight Center

Code 610.2

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

Publications/References

Cunningham, Kevin J., Carlson, Janine L., Wingard, G. Lynn , Robinson, Edward, Wacker, Michael A., 2004, Characterization of Aquifer Heterogeneity Using Cyclostratigraphy and Geophysical Methods in the Upper Part of the Karstic Biscayne Aquifer, Southeastern Florida, USGS Water Resources Investigations Report, 03-4208, Tallahassee, FL, U.S. Geological Survey.
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Creation and Review Dates

DIF Creation Date: 2006-04-21

Last DIF Revision Date: 2012-12-21

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