Coal comes from massive amounts of trees and plant matter that have been changed by tremendous heat and pressure. Oil and natural gas form from fish, reptile, and animal matter under similar heat and pressure conditions. The most logical time for coal, oil and gas to form was during and after the worldwide flood, when enormous amounts of animal and vegetable matter underwent mass burial under the incredible destruction and pressure of the flood waters and the sediments.1

Diamonds are highly pressurized, pure carbon gems. Most diamonds appear in “blue ground,” in or near the neck of an extinct volcano where magma erupted. The high pressure of volcanic activity could have formed diamonds. Many may have formed when the “fountains of the deep” were broken up or when mountains arose during the last months of the Flood (Psalm 104:6-8).

  1. ”How fast can oil form,” www.answersingenesis.com