Foundations of Geology Crossword Puzzle

QUESTIONS LIST:

• dike : a vein of igneous rock that runs perpendicular to the strata.
• rock : usually a combination of two or more minerals
• unconformity : a surface of erosion that separates one layer of rock from another.
• crystalline : usually with a sharp, geometric shape.
• mineral : basic building block of rocks.
• erosion : there is only an unconformity when there is clear evidence of _ .
• stalagmite : structure that rises from the floor of a cavern.
• stalactite : an icicle-like structure hanging down from the ceiling of a cavern.
• magma : molten rock.
• minerals : inorganic crystalline substances found naturally in the earth.
• laminae : several layers of lamination together.
• strata : layers of rock.
• lamination : a single layer of rock that is less that 1 cm thick.
• column : when the formation in a cavern is from the floor all the way to the ceiling.
• sill : a vein of igneous rock that runs in the same direction as the strata.
• topsoil : topmost layer that is rich in humus.
• metamorphic : rock that has undergone change, usually due to heat and/or pressure.
• water : most sediment is laid down by _ .
• delta : sediment deposits carried to the end of a river can form this.