| Here the rock formed when lava flowed into a freshwater lagoon and quickly altered into spilite basalt. |
| The smooth slate floor of the bottom level reflects the rough basalt on the pathway through a preserved grove of evergreens. |
| Soils on basalt had a higher pH and were higher in most micronutrients, but lower in Iron, than soils on arkose. |
| The basalt lava in particular has been, and is still being, extensively quarried for road aggregate in many large quarries on those mountains. |
| It can be found in fissure veins and brecciated amygdaloidal basalt lodes but not in the conglomerate lodes. |
| Basalt thus produces heavy clay soils, many of which are abundant in nutrients and provide rich agricultural land. |
