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Fig. 3 | Journal of Palaeogeography

Fig. 3

From: A near-shore clastic-carbonate mixing mode in a continental rift basin (early Oligocene, eastern Shijiutuo Uplift, Bohai Bay Basin, China): sedimentology, reservoir characteristics and exploration practice

Fig. 3

The lithological characteristics of the mixed sediment lithofacies of Members 1 and 2 of Shahejie Formation, the steep slope belt, eastern STU. a and d Core photos, arrows in a are biological dissolution pores; b, c, e, i Photomicrographs, b-Cross-polarized light, c, e and i-Plane- polarized light. a Well QHD29-2E-5, 3386.14 m, core sample, sandy conglomerate. Biological dissolution pores can be found on the surface; b Well QHD29-2E-5, 3384.88 m, dolomitic grains bearing epidermis oolitic fine conglomerate, with complete gastropods fossils; c Well QHD36–3-2, 3771.96 m, bioclast-bearing sandy conglomerate; d Well QHD36–3-2, 3777.00 m, core specimen, bioclastic dolomite, developing biological cavity and bioclastic dissolution pores; e Well QHD36–3-2, 3765.16 m, terrestrial clastic bioclastic dolomite; f Well QHD36–3-2, 3776.94 m, quartz-bearing bioclastic dolomite; g Well QHD29-2E-5, 3358 m, epidermis oolitic bioclast-bearing dolomite; h Well QHD36–3-2, 3777.15 m, oolitic-bearing bioclastic micrite dolomite; i Well QHD29-2E-2, 3223.51 m, sandy micrite bearing dolomite

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