ANTHONY TOMARAS7.30 .2016

AGS 540: Final Project Geology of Longwood and Central

Florida and Class Material

Central Florida Geology Appendices

1. Title Page2. Table of Contents3. Introduction4. Basic Geologic Information of

Central Florida5. Opening Statement6. Functions and Layers7. Central Florida Central Florida

Potentiometric Surface8. Central Florida Sinkhole Types9. Geomorphology of Longwood

Florida10. Longwood Florida Lithology and

Sediment Distribution11. Conclusions

12. Class Material Introduction13. Chapter 6 – Coordinate

Systems14. Chapter 9 - Symbolizing and

Labeling15. Chapter 8 – Classifying

Features16. Chapter 15 – Querying Data17. Chapter 19 – Buffering18. Chapter 20 – Raster Analysis19. Chapter 12 – Creating

Features

Table of Contents

Geology of Longwood and Central Florida

I chose to make the final project on the Geology of Longwood, Florida for the following reasons: I was born and raised in Longwood Florida. My full time job is in Geology. I do not know much information on the Geology of

Florida.Central Florida’s geology has made national

news in the last few years with sudden, devastating sinkholes. It would be interesting to see where these sinkholes

occur and how large of an area is effected by them.

Geology of Central Florida The Florida peninsula is a

porous plateau of karst limestone sitting atop bedrock known as the Florida Platform. In Central Florida there are around five main lithologic within the Longwood area.

Things that would be essential to understand about Central Florida geology if I were conducting a Phase I study are: The water table, what general

elevation is the water table at. Sinkholes, they make the news when

they happen, where are they most likely to occur.

The specific geology, soil type, and geomorphology of the area.

General Lithology Quaternary

Qbd – Quaternary beach ridge and dune sediments.

Qu – Undifferentiaed Quaternary sediments (sand and silt).

Pliocene/Pleistocene Sediments TQsu – quarts sand with variable

amounts of calcilutile. Cypresshead Formation

TQc – Cypresshead Formation, reddish-orange clayey cross-bedded sand.

Hawthorn Group Th – Undifferentiated Hawthorn

Group, clayey sands to silty clay sand occasional relatively pure clays.

Opening Statement

GIS is a good tool to study the Geology of an area.This can be good for engineering or water

management purposes. It can be used to look at historical geologic data, any

underground utilities present to avoid during drilling operations. Aerial and satellite imagery can aid in the process of giving a clear idea of property type/lines.

I plan on including any relevant information to this map to aid a geologist doing a Phase I investigation A Phase I investigation is a site assessment and information

gathering task.

Functions and Layers Aerial Imagery Basemap

This is to aid in any potential wet and swamp areas, which can give a clue on soil type.

Light Gray World Basemap This basemap is used to only

show basic political and road information in a non-cluttering format

Rock and Sediment Distribution This layer shows the rock and

sediment distribution of Florida Geomorphology

Shows the different types of geomorphologic features

Florida Sinkhole Types Shows the attributes of

different types of sinkholes in Florida.

Florida Stratigraphy Shows basic stratigraphy of

major Floridian formations Upper Aquifer

Potentiometric Surface This contour line shows the

level which water rises in feet below ground surface

Public (Non-Federal) Water Wells Shows this location of public,

non-federal wells

Central Florida Potentiometric Surface I obtained both the well

locations and contour elevation of Florida's potentiometric surface from Florida’s Geological Survey. To display the contour, I picked unique values (the whole range goes from -60 to 240 feet, which caused the contour lines to blend together more as the only ones that are represented in this area range from -20 to 130 ft. For the well locations, I displayed xy data from an excel spreadsheet.

Central Florida Sinkhole Types

This map layout shows the different sinkhole types in and around Central Florida. I obtained the data from the Florida State Geological Survey, and put it into map layout view and included the Light Gray World basemap. Renamed the layer names so they would be more concise.

Geomorphology of Longwood Florida

I included the World Imagery Basemap for some easy to access yet still high quality orthoimagery, and included any geomorphic features that was available on the Florida Geologic Survey Website. Then exported the map in Layout View.

Longwood Florida Lithology and Sediment Distribution

I obtained data on Florida’s stratigraphy and rock/sediment distribution from Florida’s Geologic Survey.

Conclusions

Central and Longwood Florida has a fairly large amount of GIS data available thanks to the Florida State Geological Survey.

This can be helpful for Engineering Geologists in the area to help aid in their work routine.

Geology is important for this area because for many reasons To build any structure that could be affected by a sinkhole is dangerous an

needles with this information it is easy to see where problem areas are. When drilling a well for private, commercial, or agricultural use, it is

important to know the depth of the water table and a general idea on how fruitful a well could be.

By knowing basic rock/soil types it could aid in construction and material removal.

Geomorphic maps are a good tool to reference since it gives names to an areas features, this can be useful for describing the differences in soil/rock types.

There is a large amount of data available for this area, but it can always be improved Central Florida has published reports of surficial geologic maps that have

no associated GIS data included in the report file.

CLASS MATERIAL

AGS 540 Appendices

Chapter 6b Projections

Chapter 6 – Working with Coordinate Systems and

Projections

Each of the 3 data frames have different projections, and it can be quite noticeable. The Alaska data frame uses “Alaska

Albers Equal Area Conic” coordinate system Which uses the “Albers Equal Area

Conic” projection The Mainland data frame uses the

North American Datum of 1927. You can tell by the border of Canada

and the US, it is very straight. The Hawaii data frame uses “Hawaii

Albers Equal Area Conic” coordinate system While similar to the Alaskan data frame,

it is locally created to reduce error.

Chapters 9 Symbolizing and Labeling Features

This map shows the capability and versatility of symbolizing and labeling features in a map.

There is a lot of customization that can be done for each item.

This map of Southern Florida is a tourist information map with shipwrecks, coral reefs, and cities with population of greater than 100,000.

Chapter 8Classifying Features

By selecting the same shapefile, it is possible to create many different types of maps and infographics, if there is enough information provided.

The “counties” polygon shapefile had crime statistics provided for each county, and this can be implemented to the map in various ways shows here.

Chapter 15Querying Data

Buffering Lookouts Final View

Chapter 19 - Buffering

By selecting features from a buffer, and creating new layers it is possible to go from the image on the left to the image on the right

Final Map Raster Data Analysis

By selecting and combining raster surfaces is possible to create a “heat map” using raster data.

Chapter 20-Raster Analysis

Chapter 12 – Creating Features

To merge and change parcels, you have to start an editing session and select the correct layer.

Then, using different snapping methods alter the shape of the parcel.

It is possible to create a whole new parcel and by using the length pop-up box, have it be very accurate.