Fig 1.
Sites and areas considered for this study.
Only the sites containing geometric microliths for the time-span under study are shown. Maps modified from ESRI World Terrain Base Map.
Fig 2.
Some of the geometric microliths present in the sites under study.
The geometrics belong to the sites of Cova de les Cendres (1,2), Barranquet (3,4), Cova de l’Or (5–11), Mas d’Is (12) and Cueva de Nerja (13–16). Full information of the geometric microliths used (including their provenance) can be found in S2 File in Geos.csv and Specimen_information.csv. In this figure, geometrics 1 and 2 are republished from [72] under CC BY license, with permission from MARQ–Museu Arqueològic d’Alacant, original copyright 2009. Likewise, geometrics 3, 4 and 12 are republished from [28] under CC BY license, with permission from A. Cortell-Nicolau and O. García-Puchol, original copyright 2020.
Fig 3.
Convergence of the posterior distribution of the parameter r.
Confidence intervals offered at 80% and 95%. For both kernels, from the initial uniform distribution, the parameter value offers better convergence for each θi.
Fig 4.
Posterior distribution of the possible origins for each particle.
Site abbreviations from left to right: Chav = Chaves, Ben = Benàmer, Tor = Cueva del Toro, Valm = Valmayor XI, Or = Cova de l’Or, Nerj = Cueva de Nerja, Cen = Cova de les Cendres, Gui = Guixeres, Bar = Barranquet, Cast = Los Castillejos, Ret = El Retamar, Mas = Mas d’Is, Fal = Abric de la Falguera.
Fig 5.
Probability for the proposed origin areas considering a single origin.
(A) relaxed kernel. (B) strict kernel. Higher intensity and size of circles indicates higher probability. Maps modified from ESRI World Terrain Base Map.
Fig 6.
Probability for the proposed expansion routes considering a single origin.
(A) relaxed kernel. (B) strict kernel. Stronger colour indicates higher probability. Maps modified from ESRI World Terrain Base Map.
Fig 7.
Probability for the proposed origin areas considering two origins.
Higher intensity and size of circles indicates higher probability. Left column represents relaxed kernels; right column strict kernels. From left to right, barplot abbreviations stand for: AR-CAT = Ebro-Northeast, AR-PV = Ebro-Xúquer, AR-AND = Ebro-Guadalquivir, CAT-PV = Northeast-Xúquer, CAT-AND = Northeast-Guadalquivir, PV-AND = Xúquer, Guadalquivir, PV-PV, AR-AR, CAT-CAT, AND-AND. Maps modified from ESRI World Terrain Base Map.
Fig 8.
Probability for the proposed expansion routes expansion routes considering two origins.
Stronger colour indicates higher probability. Left column represents relaxed kernels; right column strict kernels. From left to right, barplot abbreviations stand for: Py-Med = Inner Pyrenees-Northern Mediterranean, Py-S = Inner Pyrenees-Southern Mediterranean, Med-S = Northern Mediterranean-Southern Mediterranean, Py-Py = Pyrenees-Pyrenees, Med-Med = Northern Mediterranean-Northern Mediterrnean, S-S = Southern Mediterranean-Southern-Mediterranean. Maps modified from ESRI World Terrain Base Map.
Fig 9.
Sites hierarchical cluster on the basis of the similarity of their geometric microliths.