Page 283 - Ultimate Visual Dictionary (DK)

MINERAL RESOURCES

EXAMPLES OF OIL AND GAS TRAPS MAJOR COAL, OIL, AND GAS DEPOSITS
Pinch-
Impermeable Folded out Water-saturated
rock impermeable permeable rock
Oil rock
Fault
Gas
Water-
saturated Fault
Oil
permeable
rock FAULT TRAP PINCH-OUT TRAP
Anticline Water- Folded Water -
Folded saturated impermeable saturated
impermeable permeable rock permeable
rock rock rock Coal Oil and gas
Gas
Oil Oil
Impermeable
salt dome

ANTICLINE TRAP SALT-DOME TRAP Anticline Impermeable
Sea rock layer
Land folded to form
oil and gas trap
HOW AN ANTICLINE TRAP IS FORMED
Layer of sediment Sea
containing decayed Sea Increasing layers
plant and animal of overlying
matter sediment
Gas

Old Oil and gas formed Oil
seabed by chemical reactions, Water-saturated
heat, and pressure permeable rock
DEPOSITION OF ORGANIC FORMATION OF OIL COLLECTION OF OIL AND GAS IN
MATERIAL AND GAS ANTICLINE TRAP

MINERALIZATION ZONES
Volcano Subduction zone Oceanic crust Mid-ocean
ridge
Continental
crust

Lead, Chromium
Copper, zinc, Manganese,
Copper, gold, silver, and cobalt, and Copper
Tin, tungsten, zinc, gold, tin, lead, and copper nickel and zinc
bismuth, and copper and chromium mercury

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