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A Grain of Truth: Formation of Sandstone Activity Model |
| Demonstrate the Stratification of Different Sized Grains |
The formation of alternating laminae of fine and coarse grains of large-scale sedimentary structures is a wide-spread phenomena, yet how such periodic patterns are generated has remained unanswered — until now. With this teacher-developed activity, students quickly and easily demonstrate layer separation in the formation of sandstone using a mixture of sugar and colored fine sand. The mixture is placed in a squeeze bottle then poured into a tank. As the mixture heaps together, the sugar and sand separate and form a striped pattern easy to discern. It includes blue sand, sugar, squeeze bottle, 9 7/8″W x 8″H x 3/4″D acrylic tank, ten sandstone samples, and instructions.
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