Seismic Clatter•Discovery Procedure:•Observe each seismic map for patterns of geologic features.

•Shade in and describe the general patterns shown by each map. Follow the same procedure for each seismic map.

Seismic Map #1

Seismic Map #2

Seismic Map #3

Seismic Map #4

Seismic Map #5

Seismic Map #6

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Seismic Map #1

• There is a potentially productive zone represented on this seismic plat. It is indicated by a reflection that you find at 7,300 feet at a shot point 330. Color and track the zone as it moves to the left and right of this point.

Teacher’s KeyDiscovery Procedure

Seismic Map #1

• There is a potentially productive zone represented on this seismic plat. It is indicated by a reflection that you find at 7,300 feet at a shot point 330. Color and track the zone as it moves to the left and right of this point.

Discovery Procedure

Seismic Map #2

• There are two near vertical faults above. The first starts at approximately 6,500’ and extends below 9,000’ at shot point 90 and the second starts around 5,500’ below 8,250’ at shot point 200. Indicate the fault lines by drawing two thick lines.

Discovery Procedure Teacher’s Key

Seismic Map #2

• There are two near vertical faults above. The first starts at approximately 6,500’ and extends below 9,000’ at shot point 90 and the second starts around 5,500’ below 8,250’ at shot point 200. Indicate the fault lines by drawing two thick lines.

Discovery Procedure

Seismic Map #3

• A vertical fault is located between shot point 310 and 320 and begins at a depth of 5,500’ and ends at 9,000’. Draw the fault line. The formation on the left side of the fault line is at 7,100’ and the formation on the right side of the fault line is at 6,500’. Shade in the formation on either side of the fault.

Discovery Procedure Teacher’s Key

Seismic Map #3

• A vertical fault is located between shot point 310 and 320 and begins at a depth of 5,500’ and ends at 9,000’. Draw the fault line. The formation on the left side of the fault line is at 7,100’ and the formation on the right side of the fault line is at 6,500’. Shade in the formation on either side of the fault.

Discovery Procedure

Seismic Map #4

• There is a pinchout beginning at a depth of 4,600’ between shot points 1285 and 1290 and dipping to the right to a depth of 6,250’ as it goes off the plat. Shade this zone one color. Then, using another color, shade the zone the pinchout intersects.

Discovery Procedure Teacher’s Key

Seismic Map #4

• There is a pinchout beginning at a depth of 4,600’ between shot points 1285 and 1290 and dipping to the right to a depth of 6,250’ as it goes off the plat. Shade this zone one color. Then, using another color, shade the zone the pinchout intersects.

Discovery Procedure

Seismic Map #5

• There is a salt dome topping out at a depth of 8,000’ at shot point 250. Shade the area that appears to be a salt dome. In addition, there is a potentially productive zone that peaks at 7,750’ at shot point 250. Shade that zone another color. Shade a second potentially productive zone that you find at 8,800’ at shot points 235 and 265. The salt dome breaks this formation at these shot points.

Discovery Procedure Teacher’s Key

Seismic Map #5

• There is a salt dome topping out at a depth of 8,000’ at shot point 250. Shade the area that appears to be a salt dome. In addition, there is a potentially productive zone that peaks at 7,750’ at shot point 250. Shade that zone another color. Shade a second potentially productive zone that you find at 8,800’ at shot points 235 and 265. The salt dome breaks this formation at these shot points.

Discovery Procedure

Seismic Map #6

• There is a potentially productive anticline structure that peaks just left of shot point 240 at approximately 7,500’. Identify and shade this structure as it continues to either side of the plat. There is a second potentially productive anticline 1,200’ below the peak of this structure that peaks just right of shot point 230. Shade this anticline another color.

Discovery Procedure Teacher’s Key

Seismic Map #6

• There is a potentially productive anticline structure that peaks just left of shot point 240 at approximately 7,500’. Identify and shade this structure as it continues to either side of the plat. There is a second potentially productive anticline 1,200’ below the peak of this structure that peaks just right of shot point 230. Shade this anticline another color.

Discovery Procedure

Cycle 4: Seismic Clatter

• Scientists use seismic technology to map patterns of rock formations below the surface

of the earth.

Explosion

Limestone

Truck with recording equipment

Geophones detect reflected waves

Seismic waves reflect off the limestone layer

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Cycle 4: Seismic Clatter• Vocabulary

• 1. Anticline: upward folding of rocks

• 2. Fault: a fissure in the earth’s crust

• 3. Fissure: a crack, split, or narrow passage

• 4. Reflect: bend or bounce sound waves from one surface to another

• 5. Salt dome: an anticlinal fold with a column of salt

• 6. Seismic waves: sound waves of or relating to earth vibration, • including those artificially induced

• 7. Thumper truck: a truck used to send powerful vibrations through • the ground

Wonder Why Question

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Cycle 4: Seismic Clatter