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both 1540 and 1545 combined to form a single sample
extremely sandy sample (~80% very fine organic C)
Note: This is the uppermost date shown in the paper
this upper sediment sample provided an age for any old carbon  effect and was used to correct the balance of sediment samples for Humboldt lake

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Note: this date was deemed unreliable and not used to establish Nora sediment ages
Note: This is the uppermost date shown in the paper

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Note: this date was deemed unreliable and not used to establish Nora sediment ages
Note: This is the uppermost date shown in the paper

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Note: this date was deemed unreliable and not used to establish Nora sediment ages
Note: This is the uppermost date shown in the paper

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Note: this date was deemed unreliable and not used to establish Nora sediment ages
Note: This is the uppermost date shown in the paper