Fig. 3. Continuous magnetic results and comparison with geomagnetic models. Shown are radiometric ages (U-Th), magnetic declination, MAD, magnetic inclination, and relative paleointensity for specimens from Alho 31 (dark green) and Alho 06 (dark blue). Paleomagnetic results are compared with global geomagnetic field models for the Pau D’Alho cave location. CALS3k.4e (light blue) stands for “Continuous model from Archeomagnetic and Lake Sediment data” for the last 3 ka (17). Model ARCH3k.1 (orange) stands for “Archeomagnetic data” for the last 3 ka (17). Model HFM.OL1.A1 stands for “Holocene Field Model” (18). This last model accounts for archaeomagnetic, lava flows, and sedimentary data covering the past 10 ka and is less sensitive to outliers than CALS3k.4e yielding more stable estimates. From 1840 to 1990 CE, the three geomagnetic models are constrained by the gufm1 model (6). Also shown are the high-quality South American archeointensity data from bricks, ceramics, tile, and historic basalts for the last 700 y (pink squares and error bars); these data were relocated to the Pau d’Alho location for comparison (13).
From the Trindade et al article.