Chapter 2

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PETERSBURG
FIVE FORKS UNIT

Contents
Figures
Tables
Chapter 1
Chapter 2
Chapter 3
Chapter 4A
Chapter 4B
Chapter 5
References

An Archaeological Overview and Assessment
of the Five Forks Unit

Petersburg National Battlefield, Virginia

Chapter Two
Geographical Setting of Five Forks

The Five Forks Unit of Petersburg National Battlefield is located within the northern half of Dinwiddie County west of the city of Petersburg, Virginia.  Five Forks lies south of the Appomattox River at the extreme western edge of the inner Coastal Plain physiographic province, in or very near the transitional zone between the inner Coastal Plain and the Piedmont.  Elevations on the upland summits range from 260 to 302 feet above sea level (asl) at the forks; slopes descend to drainage bottoms at elevations down to 200 feet asl (Figure 2.1).

The soils on the well drained uplands are the among the oldest ones in the county, having formed in the residuum of acid crystalline rocks and remained stable in geologic time (Clausen et al. 1996:76).  The predominant upland soil type is Appling sandy loam with 2-7 percent slope (2B).  A typical profile for this soil is described below (Clausen et al. 1996:13,62,63):

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Surface layer: Ap horizon
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0 to 7 inches, olive brown sandy loam (2.5Y 4/4)

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Subsurface layer: E horizon
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7 to 11 inches, brownish yellow sandy loam (10YR 6/6

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Subsoil
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11 to 16 inches, Bt1 horizon, brownish yellow sandy clay loam (10YR 6/8

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16 to 33 inches, Bt2 horizon, brownish yellow clay (10YR 6/8) with red mottles (2.5YR 5/8

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33 to 43 inches, BC horizon, brownish yellow sandy clay loam (10YR 6/8) with red mottles (2.5YR 5/8

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Substratum: C horizon
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43 to 72 inches, yellowish red sandy clay loam (5YR 4/6)

This description relates to soils found on all of the major historic farms to be discussed in this study: Gilliam, Boisseau/Young, Sydnor and "Chimneys", and the post-Civil War dwelling east of Church Road.  The drainages adjacent to the Gilliam farm and the Sydnor farm site have a very similar soil type (2C), the only difference being a greater degree of slope.

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