Geochronological database and classification system for age uncertainties in Neotropical pollen records
The newly updated inventory of palaeoecological research in Latin America offers an important overview of sites available for multi-proxy and multi-site purposes. From the collected literature supporting this inventory, we collected all available age model metadata to create a chronological database...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-02-01
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| Series: | Climate of the Past |
| Online Access: | http://www.clim-past.net/12/387/2016/cp-12-387-2016.pdf |
| Summary: | The newly updated inventory of palaeoecological research in Latin America
offers an important overview of sites available for multi-proxy and
multi-site purposes. From the collected literature supporting this
inventory, we collected all available age model metadata to create a
chronological database of 5116 control points (e.g. <sup>14</sup>C, tephra,
fission track, OSL, <sup>210</sup>Pb) from 1097 pollen records. Based on this
literature review, we present a summary of chronological dating and
reporting in the Neotropics. Difficulties and recommendations for chronology
reporting are discussed. Furthermore, for 234 pollen records in northwest
South America, a classification system for age uncertainties is implemented
based on chronologies generated with updated calibration curves. With these
outcomes age models are produced for those sites without an existing
chronology, alternative age models are provided for researchers interested
in comparing the effects of different calibration curves and age–depth
modelling software, and the importance of uncertainty assessments of
chronologies is highlighted. Sample resolution and temporal uncertainty of
ages are discussed for different time windows, focusing on events relevant
for research on centennial- to millennial-scale climate variability. All age
models and developed R scripts are publicly available through figshare, including
a manual to use the scripts. |
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| ISSN: | 1814-9324 1814-9332 |