SimilarityRank
triassic 0.916 19513
permian 0.910 18568
silurian 0.898 24411
devonian 0.892 17422
eocene 0.889 39949
mesozoic 0.880 21369
ordovician 0.877 22032
miocene 0.866 31987
pleistocene 0.852 19850
carboniferous 0.849 10443
precambrian 0.846 28924
palaeozoic 0.846 17635
oligocene 0.840 52381
facies 0.825 23456
metamorphic 0.823 30217
namurian 0.819 53188
archaean 0.815 68387
glaciation 0.811 30769
unconformably 0.810 99989
proterozoic 0.809 68404
gneiss 0.807 38681
breccia 0.806 37637
grainstone 0.801 43255
chert 0.799 49404
lias 0.795 55567