SimilarityRank
Cretaceous 0.850 59402
Devonian 0.835 99765
Triassic 0.834 93483
Shale 0.807 29866
Pleistocene 0.775 71860
Bakken 0.765 53247
shales 0.755 97010
Marcellus 0.738 34448
shale 0.721 17984
Cambrian 0.712 62691
Anadarko 0.702 97984
Holocene 0.688 86928
geologic 0.681 35099
sedimentary 0.680 47805
Utica 0.670 47346
Basin 0.665 13536
Panhandle 0.642 48803
Pilbara 0.639 94612
Jurassic 0.637 32117
Fossils 0.636 91035
Williston 0.630 70809
geological 0.630 19326
Sandstone 0.628 72094
Formation 0.628 26921
oilfields 0.627 98378