These veins formed by the polymerization and solidification of hydrocarbons that were mobilized from the deeper oil shales of the Green River Formation during burial and diagenesis.
ðiːz vˈeɪnz fˈɔːɹmd baɪ ðə pˌɑːlɪmɚɹaɪzˈeɪʃən ænd səlˌɪdɪfɪkˈeɪʃən ʌv hˈaɪdɹəkˌɑːɹbənz ðæt wɜː mˈoʊbɪlˌaɪzd fɹʌmðə dˈiːpɚɹ ˈɔɪl ʃˈeɪlz ʌvðə ɡɹˈiːn ɹˈɪvɚ fɔːɹmˈeɪʃən dˈʊɹɹɪŋ bˈɛɹɪəl ænd dˌaɪədʒˈɛnᵻsˌɪs.