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. 2015 Apr 21;10(4):e0124498. doi: 10.1371/journal.pone.0124498

Fig 1. Geological sketch map of the northern Latium and location of the study area.

Fig 1

1) Holocene sediments; 2) Middle-Upper Pleistocene terraced marine sediments rich in volcanic components; 3a) Middle-Upper Pleistocene alkali-potassic lavas and volcaniclastic deposits; 3b) Middle-Upper Pleistocene volcaniclastic sediments of the Tuscania basin; 4) Lower Pleistocene marine sediments; 5) Acid volcanic rocks of the Tolfa and Cimini volcanic district; 6) Pliocene marine sediments; 7) Meso-Cenozoic flysch units of the Monti Romani and Monti della Tolfa; 8) Margins of the main craters and calderas; 9) Main scoria cones and small central edifices. (Modified from [55]).