Kejimkujik National Park - Geology and Soils

Geology and Soils

The bedrock of the Park consists of Precambrian to Ordovician period quartzite and slate, plus Devonian period granite. All of these rocks, especially quartzite, have a high silica content and provide scanty amounts of nutrients to the soils that develop on them. The slate, however, is fine-grained and produces a loamy soil which yields its nutrients more quickly than the stony sandy loams and loamy sands found over the coarse-grained rocks. Most of the slaty loams occur around Kejimkujik Lake. Deep outwash sands and gravels form a band west of the lake. Elsewhere the soil landscape is dominated by the cobbly, often shallow granite or quartzite material. Podzols underlie most well-drained areas. Gleysols and peat bogs dominate where drainage is poor. The Park receives acid rain, and its soils have few available acid-buffering minerals, so strong acidity is the rule for soils and waters—even large bodies of water such as Kejimkujik Lake.

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