| Tapo Formation is formed by conglomerate and conglomeratic sandstone as bases,with slate and sandy slate as coarse debris sediments.I sorted out three types of lithology,they are conglomerate & conglomeratic sandstone & sandstone(conglomerate as main),conglomeratic sandstone & sandstone(sandstone as main)and sandstone & mudstone interbedding.Basing on the results,I also classed three sedimentary facies(fan delta face,shallow sea face and deep sea face),eight subfacies(fan delta subfacies,fan delta plain subfacies,fan delta front subfacies,higer shallow sea subfacies,lower shallow sea subfacies,submarine fan subfacies)and seven microfacies.In the last,I built the sedimentary facies model for Tapo Formation,as Fan delta &Submarine Fan Sedimentary System(FSSS). |
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