Lysanna Anderson 20250918 spreadsheet https://doi.org/10.5066/P15IBCSO Lysanna Anderson David Wahl 20160103 publication Global and Planetary Change vol. 138 n/a Elsevier BV ppg. 82-92 https://doi.org/10.1016/j.gloplacha.2015.09.012 sub fossil charcoal particle count data and associated 14C age determinations for a core recovered in 2003 from a perennial wetland, Paixban, in northern Guatemala paleo environmental reconstruction, specifically fire history 20160103 publication date Complete None planned A single wetland site. -90.117000 -90.116000 17.800000 17.798700 ISO 19115 Topic Category biota None Charcoal USGS Metadata Identifier USGS:672bcb48d34e16b32e739a74 None Peten, Guatemala, Maya lowlands None. Please see 'Distribution Info' for details. None. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Lysanna Anderson USGS - SOUTHWEST REGION Research Geologist mailing and physical

NASA AMES-Moffett Field,Moffett Field - Building 19

Moffett Field CA 94035 650-439-2929 landerson@usgs.gov Dave Wahl, USGS 14C ages precision is represented in standard deviations for the measurements by the respective laboratories all is consistent logically N/A Latitude Longitude provided N/A Macroscopic charcoal was extracted from 2.5 cm3 samples taken at contiguous 1 cm intervals over the entire length of the core. 20140101 Lysanna Anderson USGS - SOUTHWEST REGION Research Geologist mailing and physical

NASA AMES-Moffett Field,Moffett Field - Building 19

Moffett Field CA 94035 650-439-2929 landerson@usgs.gov Samples were soaked in 3% (NaPO3)6 for a minimum of 24 h before wet sieving at 125 μm. 20140101 The remaining fraction was bleached in commercially available 6% NaOCl in order to completely deflocculate the sediment and clear the samples, through digestion, of any remaining non-charcoal and partially burned organic matter. NOTE: To ensure methodological consistency, bleaching times for the entire sample set for the core was established experimentally. Replicate samples from each of the sediment types present in the core were processed with bleaching times ranging, in 1 h increments, from 1 to 4 h. The time required for deflocculation and digestion of the most resistant sediment type within the core was used for all samples from the core. Bleaching time was determined to be 4 h. 20140101 Following bleach treatment, the samples were sieved at 125 μm, washed into 4 inch diameter single-use Petri dishes, and dried at 50 °C overnight. 20140101 Counts were made using a binocular scope at 10–15 x magnifications. 20140101 Lysanna Anderson USGS - SOUTHWEST REGION Research Geologist mailing and physical

NASA AMES-Moffett Field,Moffett Field - Building 19

Moffett Field CA 94035 650-439-2929 landerson@usgs.gov PXB_14C_ages.csv Comma Separated Value (CSV) file containing data. Producer Defined sample ID USGS sample ID Producer Defined USGS sample ID Sample Midpoint depth (cm) midpoint of depth below sediment water interface in core from which sample was recovered Producer Defined 46.5 549.5 cm 0.5 Sample Thickness (cm) Thickness of sampled depth Producer Defined 1 1 cm 1 14C age uncalibrated 14C age determination Producer Defined 90 8700 radio carbon years 1 ±1sd One standard deviation associated with measured distribution of radio carbon age for sample Producer Defined 30 180 years 1 Type of material description of material dated Producer Defined description of material dated Radiocarbon lab code sample ID assigned by dating facility lab Producer Defined sample ID assigned by dating facility lab ww - US Geological Survey Eastern Geology and Paleoclimate Science Center 14C laboratory Beta - Beta Analytic Testing Laboratory CAMS - Center for Accelerator Mass Spectrometry PXB_charcoal.csv Comma Separated Value (CSV) file containing data. Producer Defined depth(cm) Depth below sediment water interface in core Producer Defined 27 593 cm 1 years BP modeled years before present according to age model based on associated 14C age determinations Producer Defined 33 10276 years before present 1 sediment vol. sampled (cc) volume of sediment sampled from core Producer Defined 2.5 3.0 cc 0.5 No. Particles number of particles of charcoal Producer Defined -999 no data Producer defined 0 993 count 1 Charcoal particle count data and associated radio carbon age determinations from Lago Paixban in northern Guatemala. Ages listed in charcoal data spreadsheet are modeled from 14C age determinations in 14C data spreadsheet. Lysanna Anderson, David Wahl, Two Holocene paleofire records from Peten, Guatemala: Implications for natural fire regime and prehispanic Maya land use, Global and Planetary Change, Volume 138, 2016, Pages 82-92, ISSN 0921-8181, https://doi.org/10.1016/j.gloplacha.2015.09.012. (https://www.sciencedirect.com/science/article/pii/S0921818115300485) U.S. Geological Survey - ScienceBase mailing address

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Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P15IBCSO None 20250918 Lysanna Anderson USGS - SOUTHWEST REGION Research Geologist mailing and physical

NASA AMES-Moffett Field,Moffett Field - Building 19

Moffett Field CA 94035 650-439-2929 landerson@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata FGDC-STD-001.1-1999