SimilarityRank
cretaceous 0.916 15845
permian 0.903 18568
devonian 0.895 17422
ordovician 0.892 22032
silurian 0.887 24411
mesozoic 0.885 21369
palaeozoic 0.870 17635
eocene 0.869 39949
carboniferous 0.869 10443
pleistocene 0.855 19850
precambrian 0.854 28924
namurian 0.848 53188
miocene 0.846 31987
oligocene 0.839 52381
breccia 0.838 37637
alluvium 0.834 48914
proterozoic 0.826 68404
chert 0.825 49404
unconformably 0.820 99989
fossiliferous 0.819 85110
belemnite 0.816 33854
metamorphic 0.816 30217
glaciation 0.815 30769
lacustrine 0.815 76897
andesitic 0.814 76635