Table of Contents - MWR147: Quaternary Sedimentation in South Florida


Holocene Sediment Accumulation of the South Florida Shelf Margin

Paul Enos

Abstract

Introduction

Regional setting

Methods

Local setting

Submarine topography
Hydrography
Sea-level history

Organisms

Ecology and distribution
Algae
Marine grasses
Foraminifera
Porifera (sponges)
Coelenterates
Bryozoans
Mollusks
Annelid worms
Arthropods
Echinoderms
Tunicates
Habitat communities
Skeletal productivity
Skeletal contributions to sediment
Ancient analogs

Surface sediments

Texture
Grain type
Mineralogy
Sedimentary structures
Porosity and permeability

Early diagenesis

Holocene sediment accumulation patterns

Rock-floor topography
Holocene sediment thickness
Sediment volumes

Stratigraphy of Holocene shelf-margin sediments

Origin and history of sediment accumulations

Outer reefs
Shelf-margin sand shoals
Patch-reef banks
Inner shelf-margin sediment wedges
Tidal deltas
Inner shelf-margin banks

Controls of sediment accumulation

Productivity
Mechanical redistribution
Pre-existing rock topography
Contemporary topography

Comparison of Holocene and Pleistocene sequences of south Florida

Summary and conclusions

Acknowledgments

Appendix 1. Photographs of habitat communities

References cited

Depositional Framework of Pleistocene Rocks in South Florida

Ronald D. Perkins

Abstract

Introduction

Geologic setting

Tectonics

Stratigraphic subdivision and its relationship to previous work

Chronology of Q units

Criteria for recognition of discontinuity surfaces

Vadose sediment
Land-plant root structures
Laminated crusts
Diagenetic soilstone
Soils and soil breccias
Solution surfaces
Bored surfaces
Freshwater limestones
Combination of discontinuity criteria

Determination and application of ecologic suites

Stratigraphic application of present-day topography

Barrier-beach and beach-dune deposits
Barrier-beach, lagoon, and tidal-delta complex

Stratigraphic analysis of the Pleistocene of south Florida

Approaches to problem
Analysis of Q1 unit
Pre-unit topography and Q1 isopach patterns
Q1 lithofacies and ecologic facies
Environmental analysis of Q1 facies
Analysis of Q2 unit
Pre-unit topography and Q2 isopach patterns
Q2 lithofacies and ecologic facies
Environmental analysis of Q2 unit
Analysis of Q3 unit Pre-unit topography and Q3 isopach patterns
Q3 lithofacies and ecologic facies
Environmental analysis of Q3 unit
Analysis of Q4 unit Pre-unit topography and Q4 isopach patterns
Q4 lithofacies and ecologic facies
Environmental analysis of Q4 unit
Analysis of Q5 unit Pre-unit topography and Q5 isopach patterns
Q5 lithofacies and ecologic facies
Environmental analysis of Q5 unit

Stratigraphic implications

Dynamics of discontinuity surface formation
Similarity of sequence

Stratigraphic synthesis and conclusions

Acknowledgments

Appendix 1. Locations of measured sections

References cited