Geology
The area is underlaid by serpentinite, a rock that contains very little quartz and aluminum-bearing minerals and consists mainly of serpentine. Weathered serpentinite is dissolved rock, transformed into thin, sand- and clay-poor soil which is easily eroded. This creates a land surface over serpentinites which is stony, unfertile and sparsely vegetated and is the reason that the term "serpentine barren" is used to describe these areas. A typical serpentine barren contains bear oak, Virginia pine, Eastern redcedar, grasses and some unique and rare wildflowers.
Serpentine is valued as a decorative building stone, road material, and for this area in Maryland, a historic source of chromium ore. During the 19th century Soldiers Delight and the Bare Hills district of Baltimore County were the largest producers of chrome in the world. In Maryland, chromite, a significant accessory mineral in the serpentine, was mined until 1860. Several old mines and quarries are still visible in these serpentine barrens.
Read more about this topic: Soldiers Delight Natural Environmental Area