Sedimentology of the turbidites from the first block of the Bonan Oil Field,Shandong

The Paleogene Shahejie Formation in the first block of the Bonan Oil Field occurs as typical turbidity current deposits-a kind of low-density deposits,which may be arranged into ten sandstone and mudstone lithofacies,nine lithofacies associations and five sedimentary microfacies including turbidity current channel, interchannel,sheet turbidite,deep lake and slip blocks microfacies.The responses of different microfacies in well logs are discussed in detail.