27.12.2013 Views

Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

262 <strong>Soil</strong> <strong>Survey</strong><br />

Depth to bedrock (paralithic): 20 to 40 inches<br />

Drainage class: Well drained<br />

Parent material: Loamy residuum weathered from<br />

sandstone and siltstone<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 4.6 inches<br />

Shawmut and similar soils<br />

Composition: 20 percent<br />

Geomorphic description: Side slope backslope on hill<br />

Slope: 15 to 35 percent<br />

Elevation: 5,300 to 6,200 feet<br />

Effective annual precipitation: 17 to 20 inches<br />

Frost-free period: 70 to 90 days<br />

Surface layer texture: Gravelly loam<br />

Drainage class: Well drained<br />

Parent material: Gravelly alluvium<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 4.3 inches<br />

Additional Components<br />

Winspect and similar soils: 4 percent<br />

Management<br />

For management information about this map unit,<br />

see appropriate sections in Part II <strong>of</strong> this publication.<br />

347D—Cheadle-Lymanson-Gilispie<br />

complex, 2 to 15 percent slopes<br />

Setting<br />

Elevation: 6,000 to 7,500 feet<br />

Mean annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Major Component Description<br />

Cheadle and similar soils<br />

Composition: 40 percent<br />

Geomorphic description:<br />

• Mountaintop summit on mountain<br />

• Mountaintop shoulder on mountain<br />

Slope: 2 to 15 percent<br />

Elevation: 6,000 to 7,500 feet<br />

Effective annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Surface layer texture: Channery loam<br />

Depth to bedrock (lithic): 10 to 20 inches<br />

Drainage class: Well drained<br />

Parent material: Residuum weathered from<br />

sandstone or gabbro<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 1.4 inches<br />

Lymanson and similar soils<br />

Composition: 30 percent<br />

Geomorphic description: Mountainflank backslope on<br />

mountain<br />

Slope: 2 to 15 percent<br />

Elevation: 6,000 to 7,500 feet<br />

Effective annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Surface layer texture: Loam<br />

Depth to bedrock (paralithic): 20 to 40 inches<br />

Drainage class: Well drained<br />

Parent material: Loamy residuum weathered from<br />

sandstone and siltstone<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 4.6 inches<br />

Gilispie and similar soils<br />

Composition: 20 percent<br />

Geomorphic description:<br />

• Mountaintop summit on mountain<br />

• Mountaintop shoulder on mountain<br />

• Mountainflank shoulder on mountain<br />

Slope: 2 to 15 percent<br />

Elevation: 6,000 to 7,500 feet<br />

Effective annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days<br />

Surface layer texture: Gravelly loam<br />

Depth to bedrock (lithic): 10 to 20 inches<br />

Drainage class: Well drained<br />

Parent material: Clayey residuum weathered from<br />

sandstone<br />

Native plant cover type: Rangeland<br />

Available water capacity: Mainly 2.0 inches<br />

Additional Components<br />

Adel and similar soils: 5 percent<br />

Bridger and similar soils: 5 percent<br />

Management<br />

For management information about this map unit,<br />

see appropriate sections in Part II <strong>of</strong> this publication.<br />

347E—Cheadle-Lymanson-Gilispie<br />

complex, 15 to 35 percent slopes<br />

Setting<br />

Elevation: 6,000 to 7,500 feet<br />

Mean annual precipitation: 20 to 25 inches<br />

Frost-free period: 50 to 70 days

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!