E879F28F-1DD8-B71B-0BF399C66D796EBA

Figures 11 and 12. Parade grounds at Golden Gate NRA (left) and three soils visible in shallow pit at Gauley River

Parade grounds at Golden Gate NRA (left) and three soils visible in shallow pit at Gauley River

Figure 11 (left). The parade grounds at Fort Baker in Golden Gate National Recreation Area are formed on artificial fill, called a Xerorthent by soil scientists. The fill is derived from dredged material and can be susceptible to subsidence (settling) during earthquakes. Figure 12 (right). Figure 12. Three distinct soil horizons, comprising dark-colored organic matter at the surface, white-colored leaching organic matter and clay in the middle, and black and orange–colored translocation of the organic matter and clay to the subsoil, are visible in this shallow soil pit dug by scientists in sandy river soils at Gauley River National Recreation Area, West Virginia. These soils, which scientists classify as Spodosols, tend to have low nutrient content because of leaching.

U.S. National Park Service

Permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this website. Digital assets without any copyright restrictions are public domain.

Left: USDA/Susan Southard; Right: USDA/Charles Delp

Public domain:Full Granting Rights

Image

NPS-wide, Code: NPS

NPS.gov Collection

Public Can View

Friday, January 5, 2018 1:38:26 PM

Friday, January 5, 2018 1:38:26 PM

E87B9DC5-1DD8-B71B-0B8B916324C70C80.jpg

Monday, January 1, 0001 12:00:00 AM

jpg

114.1 kB

Scenic