RCYBPRadio Carbon Years Before Present (also known as RCBP; historical dating)
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13,000 RCYBP to 10,500 RCYBP, an event the authors correlate to the onset of sedimentation in the records from Carajas, Salitre, and Icatu.
12,500 RCYBP, in the Late Glacial, with an increase in forest taxa.
2002), the last two occurring in the Late Glacial (17,200 RCYBP--12,700 RCYBP) and in the early Holocene (10,400 RCYBP--7800 RCYBP).
17,000 RCYBP to 9000 RCYBP, forests covered the area.
10,000 RCYBP and 9000 RCYBP, followed by a drier period until 6500 RCYBP or 4500 RCYBP, depending on the site.
During the Holocene, changes toward wetter conditions started around 6000 RCYBP in southeastern Brazil, and even later in southern Brazil, around 3000 RCYBP (Behling 2002).
After so many decades of research in the area, it is striking that dates for the majority of burials in the Lagoa Santa region cluster around two peaks: between 10,000 and 8000 RCYBP, and between 2000 and 1000 RCYBP (Figure 2).
Two organic levels, found at 115 cm and 275 cm depth, were dated to 1570 [+ o -] 70 RCYBP and 2630 [+ o -] 40 RCYBP respectively.
Dates for Cerca Grande VI range between 9700 RCYBP and 8000 RCYB; dates for Boleiras range between 9600 RCYBP and 140 RCYBP, and there is a major gap between 7500 RCYBP and 800 RCYBP.
--Santana do Riacho rockshelter (Prous 1991), located in central Minas Gerais State (2) and not very far from Lagoa Santa, provided 31 radiocarbon dates that cluster into two peaks: one between 8000 and 9500 RCYBP, and other between 4300 and 800 RCYBP (Chausson and Delibrias 1993).
The record at Lago do Pires (Behling 1998) shows a deeper chronology, where it is possible to observe an increase in moisture that starts somewhere between 8800 RCYBP and 7500 RCYBP, followed by drier mid-Holocene conditions, as detected at Lagoa Santa and Lagoa dos Olhos.
Although the site was not completely abandoned during the mid-Holocene, it was much less frequently occupied: of 38 dates obtained, only five fall in the period between 7300 RCYBP and 2400 RCYBP.