| Vertical and Horizontal Stratification | Dirt pudding Recipes and Pictures |
| Vertisols: Slickensides and gilgai |
| Basic Recipe (Prep time: 10 minutes for the basic version. It certainly takes me longer, but I am slow in the kitchen, and I design the profiles as you see at the left.) 3½ cups cold milk 2 pkgs. (4 serving size) JELL-O® Instant Pudding 1 tub (12 oz)COOL WHIP® Whipped Topping, thawed 1 pkg. (16 oz.) Chocolate sandwich cookies, crushed
|
![]() |
||||
| Robinson's modifications: Use a glass bowl to allow the profile characteristics to show. Use a variety of food items to get different colored layers (horizons): crushed vanilla sandwich cookies crushed vanilla wafers, crushed graham crackers Grape-Nuts |
Use coconut mixed with green food coloring for grass.
Put the pudding mixture in the center and the dry ingredients
around
the outside. Use raisins, chocolate chips, etc. for rock outcrops. |
||||
![]() |
A soil profile is a vertical
cross-section. This allows
you to see the layers of the soil, called horizons.
The A horizon is the surface horizon, also known as topsoil. An ochric A horizon is low in organic matter. To get this effect, mix some crushed vanilla wafers or vanilla sandwich cookies with the crushed chocolate sandwich cookies. The C horizon is the parent material, or the material in which the soil forms. This profile represents a soil in early stages of development. The subsoil (B horizon) has not yet formed. Soils with this characteristics are classified as Entisols.
|
||||
| The A horizon in this picture used crushed
chocolate sandwich
cookies because a mollic horizon has more organic matter, and will be
both
darker and thicker than an ochric horizon.
The B horizon, or subsoil, was made of a mixture of crushed chocolate and vanilla sandwich cookies. The B horizon is a subsurface zone of accumulation. It may be enriched with organic matter or minerals, and will have color and/or structure changes when compared to the parent material. The C horizon, or parent material is located under the B horizon. The darker colors in the B horizon are due to the accumulation of organic matter from plant roots and animal activity. The C horizon shows no change in color or structure (arrangement of individual particles) from the original condition. Soils with a mollic horizon are usually classified as Mollisols. |
![]() |
||||
![]() |
This A horizon is dark (crushed chocolate sandwich cookies),
but it
is not deep enough to be classified as mollic, so it is an ochric
horizon.
The E horizon is a zone where minerals have been removed by leaching. This removal of minerals bleaches this layer, so it is lighter than the layer above and the layer below. This sandwich appearance (dark-light-dark) is characteristic of albic horizons. They most often occur in forest soils, but are found in some grassland soils. Notice the layers vary in thickness and depth. This mimics actual soils. The mineral and chemical composition of the B horizon
determines the
classification. Some possibilities with this profile sequence are
Alfisols, Ultisols, or Spodosols.
|
||||
| The A horizon at left is thin, so it is an ochric.
The E horizon, as above, is an albic. The red horizon (red food coloring on coconut) represents a
spodic horizon. Soils with a spodic horizon are usually Spodosols. |
![]() |
||||
![]() |
This profile is done to show the variability that can exist
in natural
soils and the underlying geologic layers.
|
| JELL-O® PUDDING DIRT CUPS | |
| 2 cups cold milk | 1 pkg. (16 oz.) Chocolate sandwich cookies, crushed |
| 1 pkg. JELL-O® Vanilla flavor Instant Pudding | 8 - 10 (7 oz.) Plastic cups - Clear cups work best if students are "creating" a soil |
| 1 tub(8oz.)COOL WHIP® Whipped Topping, thawed | Gummy Worms and frogs |
| POUR milk into large bowl, add pudding mix. Beat until well blended. Let sit 5 min. |
| STIR in COOL WHIP® and ½ of the cookies |
| PLACE 1 Tbsp. Cookies into cups. Fill cups ¾ full with pudding mixture. Top with remaining cookies. Refrigerate 1 hr. |
| DECORATE with gummy worms and frogs, candy flowers or chopped nuts |