14c dating soil

In the soils, calibrated ages increased significantly with increasing depth.

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The 10- to 20-cm depths from both cultivated and native sites were 1200 yr older than the 0- to 10depth.

The residue of 6 M HCl hydrolysis comprised 23 to 70% of the total soil C and was, on the average, 1500 yr older. The residue of 6 M HCl hydrolysis comprised 23 to 70% of the total soil C and was, on the average, 1500 yr older.

The percentage of nonhydrolyzable C and its TY - JOURT1 - Radiocarbon dating for determination of soil organic matter pool sizes and dynamics AU - Paul, E. The percentage of nonhydrolyzable C and its 14C age analytically identify the amount and turnover rate of the old resistant soil C.

AB - The size and turnover rate of the resistant soil organic matter (SUM) fractions were measured by 14C dating and 13C/12C measurements.

This involved soils archived in 1948, and recent samples, from a series of long-term sites in the North American Great Plains.

The 90- to 120-cm depth of a cultivated site at 7015 yr before present (BP) was 6000 yr older than the surface. The 90- to 120-cm depth of a cultivated site at 7015 yr before present (BP) was 6000 yr older than the surface.

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