| 11. | The lower sides have instead a more sandstone-marl composition.
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| 12. | There in the still waters dark clays and marls were deposited.
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| 13. | Various units were earlier referred to as glauconitic or chloritic marls.
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| 14. | In 1863, the most common marl was blue marl.
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| 15. | In 1863, the most common marl was blue marl.
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| 16. | When flooded, the marl can support a variety of water plants.
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| 17. | The township was named for the marl beds found in the area.
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| 18. | Areas that are flooded six months or less are covered by marl.
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| 19. | It is a natural hill of Triassic sandstone capped by Keuper marl.
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| 20. | Soil ranges from sand to marl to rich, decomposed leaf litter.
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