?

SS

SS

?

B

SS

SS

SS

SS

SS

SS

SS

SS

SS

SS

?

?

SS

SS

SS

SS

SS

SSSS

SS

SS

SS

SS

SSSS

SS

SS

SS

SS

SS

SSSS

SS

SS

SS

SSSS

SSSS

SS

SS

SS

SS

SS

SS

SSSS

SSSS

SS

SS

SS

SSSS

SS

SS

SS

SS

SS

SS

SS

SS

SS

SS

SS

SS

SSSS

SS

SS Fl

FlR

FlR F C

R

FlR C

R

R FFl

R FFl

R FFl

R

R Fl

R

R Fl F C

R

R

R Fl F

R Fl F C

R

R

R Fl F

R Fl

Fl

R Fl

R

R

Fl F

Fl F

Fl F

R

Fl F

Fl F

R

Fl

Fl

R

R

Fl

R Fl Cl

R

Fl F

RRs Fl F

R Fl F

R Fl F

R Fl F

R Fl

R Fl

Fl F

R Rs

Fl

R Rs

Fl

FlR

Fl

R Rs

F

Fl

Fl

Fl

R

Fl

Fl

Fl

R Rs Fl

R Rs Fl F

Fl

Fl

R

Fl

Fl

Fl

R Fl A

R Fl F

R Fl F

R Fl

R Fl

R

FlR

FFlR

R

Fl F

R Rs Fl F C

R Fl

R Rs Fl F

Rs

R Rs Fl F

R

R Fl F

R Fl

SS

No

data

III

III

II

II

II

II

II

II

II

II

II

II

II

II

II

II

II

II

IIIIII

II

IV

I

I

I

I

IV

I

I

IV

I

IV

I

I

I

I

II

II

IV

I

II

II

II

II

Uppe

r

Flor

idan

aq

uife

r M

iddl

e

se

mic

onfin

ing

unit

1 DS

AP3

DS A

P2

1,070

1,075

1,145

1,130

1,120

1,115

1,110

1,080

1,085

1,090

1,095

1,100

1,105

1,125

1,135

1,140

1,150

1,155

1,160

1,165

1,170

1,175

1,180

1,185

1,190

1,195

1,265

1,250

1,240

1,235

1,230

1,200

1,205

1,210

1,215

1,220

1,225

1,245

1,255

1,260

1,270

1,275

1,280

1,285

1,290

1,295

1,300

1,305

Avon

Park

Fo

rmat

ion

Grain types

Percent pore type

m w p g f r b

Grain size and texture

Drill

er's

dep

th, i

n fe

et b

elow

gro

und

leve

l

Ichn

ofac

ies

Trac

e fo

ssils

and

se

dim

enta

ry

feat

ures

frac

i ii mol

d

fene

irv

Ichnofabricindex

1 2 3 4 5ND

mc s vfs vcsfs ms cs G P C

Lost

circ

ulat

ion

zone

s

Max

imum

vis

ual

est.

poro

sity

Flowmeter rate, in gallons per minute

0 147L S

Geol

ogic

unit

Bor

ehol

e w

all i

mag

e

RSM

HFC

type

Dep

ositi

onal

se

quen

ce

Hyd

rolo

gic

unit

DESu

rfac

es

Max

imum

est

. pe

rmea

bilit

yFl

ow

zone

s

Scientific Investigations Report 2017–5109Plate 5 of 21

U.S. Department of the InteriorU.S. Geological Survey

Prepared in cooperation with the

Broward County Environmental Planning and Community Resilience Division

Detailed Graphical Lithologic Log of the Avon Park Formation in the G–2984 Test CoreholeBy

Kevin J. Cunningham, Jared W. Kluesner, Richard L. Westcott, Edward Robinson, Cameron Walker, and Shakira A. Khan2017

EXPLANATION

Abbreviations

Mudstonem

Wackestonew

Packstonep

Grainstoneg

Floatstonef

Rudstoner

Boundstoneb

i Interparticleii Intraparticle

mold Particle moldicirv Irregular vug

frac Fracturefene Fenestral

Clayc

CobbleC

Mudm

Silts

Very fine sandvfs

Fine sandfs

Medium sandms

Coarse sandcs

GranuleG

PebbleP

Very coarse sandvcs

Depositional environmentDEHigh frequency cycle HFCRelative shoreline movementRSMNot determinedND

LandwardL

SeawardS

Estimated permeabilityEst. perm.Estimatedest.

General Grain size Texture Pore type

Depositional sequences

Depositional sequence AP3DS AP3High frequency cycle type

I Microbial-laminite-capped, grain-rich, peritidal cycle

II Rhizolith- and mud-capped, micrite-rich peritidal cycleIII Aggradational grain-rich subtidal cycleIV Glossifungites-capped subtidal cycle

High frequency cycle

Depositional-sequence boundary

No recovery/no data

Flooding surface FirmgroundKarst

Miscellaneous symbols

FS

K

FG

FG

FG

FG

FG

K

FG

K

FS

K

K

K

K

Ichnofacies

Lithofacies

Porosity and permability

High-energy inner shelf, shallow subtidal

High-energy event, marine subtidal High-energy inner shelf, shallow subtidalLow-energy inner shelf, shallow subtidal

Low-energy restricted lagoon inner shelf, subtidal

Low-energy restricted inner shelf, low-energy tidal flat

Low-energy restricted inner shelf, intertidal to supratidal

Avon Park FormationDepositional environment (DE)

Grain types, trace fossils, and sedimentary features

Gastropod

Ostracod

Larger benthic foraminifera undifferentiated

Smaller benthic foraminifera undifferentiated

Planktic foraminifera

Miliolid

FabulariaF

FallotellaFl

CoskinolinaC

Peloid

Small echinoid

Echinoid fragments

Microcodium

Unidentified skeletal grain

Bivalve

R Rotaliid

Rs Reussella

AmphisteginaA

Dasycladacean algae

RhodolithColeiconusCl

Charophytes

Intraclast

B Breccia Laminae

Desiccation cracksFenestrae

Planolites

Burrowed mottled

Thalassinoides-domintated Glossifungites firmground

Psilonichnus

Ophiomorpha

Rhizocorallium

Thalassanoides

Root traces

Asterosoma

Grain types Trace fossils

Sedimentary features

SS

Percent pore type

Maximum estimated permeability

Maximum visual estimated porosity

Floatstone and rudstone

Glossifungites

Mudstone

Skolithos Not determined

Carbonate

Floatstone

1–2%0% >10–25%>2–10% >25 –50%

>10–25%>1–10% >25 –50%

Grainstone

Cruziana

PackstoneWackestone and packstone

Packstone and grainstone

Mudstone and wackestone

Low Medium

Psilonichnus

Autochthonous breccia

Microbial laminite

0%

No

Data

ISSN 2328-0328 (online)https://doi.org/10.3133/sir20175109

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government

This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map.

For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1–888–ASK–USGS

Suggested citation: Cunningham, K.J., Kluesner, J.W., Westcott, R.L., Robinson, Edward, Walker, Cameron, and Khan, S.A., 2017, Sequence stratigraphy, seismic stratigraphy, and seismic structures of the lower intermediate confining unit and most of the Floridan aquifer system, Broward County, Florida: U.S. Geological Survey Scientific Investigations Report 2017–5109, 71 p., 21 pls., https://doi.org/10.3133/sir20175109.