Describe the process involved. Describe the difference. Stone for tool making was not readily available in the Coastal Bend area. Describe the process involved. Stalagmites grow from the floor of limestone caves.
Rainwater seeps into the cave, and dripping from the ceiling, deposits lime as the water evaporates.
Stalactites form from the ceiling down. A geode is a hollow cavity in rock lined with mineral deposits, mainly quartz. They are formed when the hollow area in the rock is filled with mineral-rich water seeping in over time. As the water in the hollow evaporates the minerals are concentrated and eventually form layers and occasionally crystals. Describe the difference.