Unit 20 Petroleum Traps

to stop something

• truncate

• halt

• deform

• accumulate

to change the shape of a rock layer

• truncate

• halt

• deform

• accumulate

a type of trap where an angular (sometimes vertical sedimentary layer sealed by a horizontal layer or impermeable rock

• truncate

• halt

• deform

• accumulate

to gradually get more and more of something over a period of time

• truncate

• halt

• deform

• accumulate

that near or around something

• surrounding

• salt dome

• anticline

• pinch-out

a large mass of salt which has flowed upwards through sedimentary rock

• surrounding

• salt dome

• anticline

• pinch-out

a type of trap where the sedimentary layer thins out, and the layers above and below come together (thins to zero) like a wedge

• surrounding

• salt dome

• anticline

• pinch-out

a type of structural trap where the layers of rock are folded upwards

• surrounding

• salt dome

• anticline

• pinch-out

to gradually destroy the surface of something through the action of wind, wave, etc.

• bay

• cautious

• erode

• surface

the top layer of an area of water or land

• bay

• cautious

• erode

• surface