Regional Maps of Subsurface Geopressure Gradients of the Onshore and Offshore Gulf of Mexico Basin Regional Maps of Subsurface Geopressure Gradients of the Onshore and Offshore Gulf of Mexico Basin

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

0 to 1,000

1,001 to 2,000

2,001 to 3,000

3,001 to 4,000

4,001 to 5,000

5,001 to 6,000

6,001 to 7,000

7,001 to 8,000

8,001 to 9,000

9,001 to 10,000

10,001 to 11,000

11,001 to 12,000

12,001 to 13,000

13,001 to 14,000

14,001 to 15,000

15,001 to 16,000

16,001 to 17,000

17,001 to 18,000

18,001 to 19,000

19,001 to 20,000

20,001 to 21,000

21,001 to 22,000

> 22,000

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

Depth of the 0.60 psi/ft pressure-gradient surface 

(CI = 1,000 feet)

 Depth to the First Occurrence of the 0.60 psi/ft Geopressure-Gradient Surface 

 in the Onshore and Offshore Gulf of Mexico Basin, USA

Figure 5A.

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

7000

9000

7000

9000

UNITED STATES

MEXICO

Data density (number of data points)

1

2 to 10

11 to 20

21 to 30

31 to 40

41 to 50

51 to 60

61 to 100

101 to 200

> 200

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

Regional Data Density for 0.60 psi/ft Geopressure-Gradient Map (fig. 5A) of the 

Onshore and Offshore Gulf of Mexico Basin, USA

Figure 5B.

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

Depth of the 0.70 psi/ft pressure-gradient surface

(CI = 1,000 feet)

0 to 1,000

1,001 to 2,000

2,001 to 3,000

3,001 to 4,000

4,001 to 5,000

5,001 to 6,000

6,001 to 7,000

7,001 to 8,000

8,001 to 9,000

9,001 to 10,000

10,001 to 11,000

11,001 to 12,000

12,001 to 13,000

13,001 to 14,000

14,001 to 15,000

15,001 to 16,000

16,001 to 17,000

17,001 to 18,000

18,001 to 19,000

19,001 to 20,000

20,001 to 21,000

21,001 to 22,000

22,001 to 23,000

23,001 to 24,000

24,001 to 25,000

> 25,000

 Depth to the First Occurrence of the 0.70 psi/ft Geopressure-Gradient Surface 

 in the Onshore and Offshore Gulf of Mexico Basin, USA

Figure 6A.

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

Regional Data Density for 0.70 psi/ft Geopressure-Gradient Map (fig. 6A) of the 

Onshore and Offshore Gulf of Mexico Basin, USA

Figure 6B.

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

1

2 to 10

11 to 20

21 to 30

31 to 40

41 to 50

51 to 60

61 to 100

Data density (number of data points)

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

 Depth to the First Occurrence of the 0.80 psi/ft Geopressure-Gradient 

 Surface in the Onshore and Offshore Gulf of Mexico Basin, USA

Figure 7A.

0 to 1,000

1,001 to 2,000

2,001 to 3,000

3,001 to 4,000

4,001 to 5,000

5,001 to 6,000

6,001 to 7,000

7,001 to 8,000

8,001 to 9,000

9,001 to 10,000

10,001 to 11,000

11,001 to 12,000

12,001 to 13,000

13,001 to 14,000

14,001 to 15,000

15,001 to 16,000

16,001 to 17,000

17,001 to 18,000

18,001 to 19,000

19,001 to 20,000

20,001 to 21,000

21,001 to 22,000

22,001 to 23,000

23,001 to 24,000

24,001 to 25,000

25,001 to 26,000

26,001 to 27,000

27,001 to 28,000

28,001 to 29,000

> 29,000

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

Depth of the 0.80 psi/ft pressure-gradient surface

(CI = 1,000 feet)

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

Regional Data Density for 0.80 psi/ft Geopressure-Gradient Map (fig. 7A) of the 

Onshore and Offshore Gulf of Mexico Basin, USA

Figure 7B.

1

2 to 10

11 to 20

21 to 30

31 to 40

41 to 50

51 to 60

61 to 100

101 to 200

Data density (number of data points)

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

3,000 to 4,000

4,001 to 5,000

5,001 to 6,000

6,001 to 7,000

7,001 to 8,000

8,001 to 9,000

9,001 to 10,000

10,001 to 11,000

11,001 to 12,000

12,001 to 13,000

13,001 to 14,000

14,001 to 15,000

15,001 to 16,000

16,001 to 17,000

17,001 to 18,000

18,001 to 19,000

19,001 to 20,000

20,001 to 21,000

21,001 to 22,000

22,001 to 23,000

23,001 to 24,000

24,001 to 25,000

25,001 to 26,000

26,001 to 27,000

> 27,000

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

Depth of the 0.90 psi/ft pressure-gradient surface

(CI = 1,000 feet)

 Depth to the First Occurrence of the 0.90 psi/ft Geopressure-Gradient Surface 

 in the Onshore and Offshore Gulf of Mexico Basin, USA

Figure 8A.

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

7000

9000

7000

9000

UNITED STATES

MEXICO

Regional Data Density for 0.90 psi/ft Geopressure-Gradient Map (fig. 8A) of the 

Onshore and Offshore Gulf of Mexico Basin, USA

Figure 8B.

Data density (number of data points)

1

2 to 10

11 to 20

21 to 30

31 to 40

41 to 50

51 to 60

61 to 100

101 to 200

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

1,000 to 2,000

2,001 to 3,000

3,001 to 4,000

4,001 to 5,000

5,001 to 6,000

6,001 to 7,000

7,001 to 8,000

8,001 to 9,000

9,001 to 10,000

10,001 to 11,000

11,001 to 12,000

12,001 to 13,000

13,001 to 14,000

14,001 to 15,000

15,001 to 16,000

16,001 to 17,000 

17,001 to 18,000

18,001 to 19,000

19,001 to 20,000

20,001 to 21,000

21,001 to 22,000

22,001 to 23,000

> 23,000

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

Depth of the 1.00 psi/ft pressure-gradient surface 

(CI = 1,000 ft)

 Depth to the First Occurrence of the 1.00 psi/ft Geopressure-Gradient Surface

 in the Onshore and Offshore Gulf of Mexico Basin, USA

Figure 9A.

San Antonio

"

"

"

ALABAMA

ARKANSAS

FLORIDA

LOUISIANA

MISSISSIPPI

OKLAHOMA

TEXAS

Dallas

Houston

100° 95° 90°

34°

32°

30°

28°

26°

0 75 MILES

0 75 KILOMETERS

Gulf of Mexico

9000

UNITED STATES

MEXICO

Data density (number of data points)

1

2 to 10

11 to 20

21 to 30

31 to 40

EXPLANATION

Offshore federal protraction areas

Boundary of geopressure-gradient model

Regional Data Density for 1.00 psi/ft Geopressure-Gradient Map (fig. 9A) of the 

Onshore and Offshore Gulf of Mexico Basin, USA

Figure 9B.

U.S. Department of Interior

U.S. Geological Survey

Open-File Report 2013–1058

Sheet 2 of 3 Lauri A. Burke, Scott A. Kinney, Russell F. Dubiel, and Janet K. Pitman U.S. Geological Survey, MS 939, Box 25046, DFC, Denver, CO 80225-0046

 Regional Maps of Subsurface Geopressure Gradients of the Onshore and Offshore Gulf of Mexico Basin Regional Maps of Subsurface Geopressure Gradients of the Onshore and Offshore Gulf of Mexico Basin

Suggested citation: 

Burke, L.A., Kinney, S.A., Dubiel, R.F., and Pitman, J.K., 2013, Regional maps of subsurface geopressure gradients

of the onshore and offshore Gulf of Mexico basin: U.S. Geological Survey Open-File Report 2013–1058, 3 sheets.