Major Land Resource Area 113X
Central Claypan Areas
Accessed: 12/21/2024
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Key Characteristics
- This area is in the Dissected Till Plains section. The western part has a mantle of Peoria Loess or Pre-Wisconsin-age loess overlying Nebraskan-age and Kansan-age till.
- Uplands
- Have thin, light-colored surface horizons
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i
Key Characteristics
- This area is in the Dissected Till Plains section. The western part has a mantle of Peoria Loess or Pre-Wisconsin-age loess overlying Nebraskan-age and Kansan-age till.
- Drainageways
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i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Uplands
- Nearly level plains (<5% slopes; some mapunit slope ranges may exceed 5%)
- Light colored soil (Alfisol or Alfic intergrade)
- Poorly drained or somewhat poorly drained soil
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i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Uplands
- Nearly level plains (<5% slopes; some mapunit slope ranges may exceed 5%)
- Light colored soil (Alfisol or Alfic intergrade)
- Moderately well drained and well drained soil
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Uplands
- Nearly level plains (<5% slopes; some mapunit slope ranges may exceed 5%)
- Fragipan
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Dissected till plains (>5% slopes)
- Bedrock/residuum < 40"
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Dissected till plains (>5% slopes)
- Fragic properties
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Dissected till plains (>5% slopes)
- Loess over till/paleosol/pedisediment (bedrock>40")
- Silty/loamy till
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Dissected till plains (>5% slopes)
- Loess over till/paleosol/pedisediment (bedrock>40")
- Clayey till
- Somewhat poorly drained
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Dissected till plains (>5% slopes)
- Loess over till/paleosol/pedisediment (bedrock>40")
- Clayey till
- Well drained
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Terraces, Lake plains, Outwash plains
- Clayey lacustrine sediments
- Moderately well drained soil
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Terraces, Lake plains, Outwash plains
- Sandy deposits
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Floodplains
- Silty alluvium (fine silty and course-silty particle size family classes)
- Very poorly drained, poorly drained and somewhat poorly drained soils
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Floodplains
- Silty alluvium (fine silty and course-silty particle size family classes)
- Moderately well drained and well drained
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Floodplains
- Loamy alluvium (includes fine-loamy and course-loamy particle size family classes)
- Poorly drained and somewhat poorly drained soil
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Floodplains
- Loamy alluvium (includes fine-loamy and course-loamy particle size family classes)
- Moderately well drained and well drained soil
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Floodplains
- Sandy alluvium
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Floodplains
- Clayey alluvium
-
i
Key Characteristics
- This area is in the Dissected Till Plains section. The western part has a mantle of Peoria Loess or Pre-Wisconsin-age loess overlying Nebraskan-age and Kansan-age till.
- Uplands
- Have dark organic-rich surface horizons
- Claypan (has abrupt textural change or subsoil that is similar to an abrupt textural change) at approximately 10-14 inches in depth
-
i
Key Characteristics
- This area is in the Dissected Till Plains section. The western part has a mantle of Peoria Loess or Pre-Wisconsin-age loess overlying Nebraskan-age and Kansan-age till.
- Uplands
- Have dark organic-rich surface horizons
- Not as above
-
i
Key Characteristics
- This area is in the Dissected Till Plains section. The western part has a mantle of Peoria Loess or Pre-Wisconsin-age loess overlying Nebraskan-age and Kansan-age till.
- Terraces
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Uplands
- Nearly level plains (<5% slopes; some mapunit slope ranges may exceed 5%)
- Natric horizon (sodium)
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Uplands
- Nearly level plains (<5% slopes; some mapunit slope ranges may exceed 5%)
- Dark colored (Mollisol or Mollic intergrade)
- Very poorly drained, poorly drained or somewhat poorly drained soil
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Uplands
- Nearly level plains (<5% slopes; some mapunit slope ranges may exceed 5%)
- Dark colored (Mollisol or Mollic intergrade)
- Moderately well drained or well drained soil
-
i
Key Characteristics
- This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
- Terraces, Lake plains, Outwash plains
- Clayey lacustrine sediments
- Poorly drained soil
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Ecological site keys
MLRA 113 Ecological Site Key
A.
This area is in the Dissected Till Plains section. The western part has a mantle of Peoria Loess or Pre-Wisconsin-age loess overlying Nebraskan-age and Kansan-age till.
I.
Uplands
ii.
Have dark organic-rich surface horizons
a.
Claypan (has abrupt textural change or subsoil that is similar to an abrupt textural change) at approximately 10-14 inches in depth
... R113XY001MO – Claypan Summit Prairie
B.
This area is in the Till Plains section of the Central Lowland province of the Interior Plains. The eastern part of this MLRA is covered by Peoria Loess, which is underlain by Illinoian-age till.
I.
Uplands
i.
Nearly level plains (<5% slopes; some mapunit slope ranges may exceed 5%)
c.
Dark colored (Mollisol or Mollic intergrade)
i.
Very poorly drained, poorly drained or somewhat poorly drained soil
... R113XY903IL – Wet Upland Prairie
d.
Light colored soil (Alfisol or Alfic intergrade)
II.
Dissected till plains (>5% slopes)
iii.
Loess over till/paleosol/pedisediment (bedrock>40")
b.
Clayey till
III.
Terraces, Lake plains, Outwash plains
i.
Clayey lacustrine sediments
IV.
Floodplains
i.
Silty alluvium (fine silty and course-silty particle size family classes)
a.
Very poorly drained, poorly drained and somewhat poorly drained soils
... F113XY919IL – Wet Silty Floodplain Forest
ii.
Loamy alluvium (includes fine-loamy and course-loamy particle size family classes)
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