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The Permian sedimentary succession exposed in Sirinia Basin (South Carpathians, Romania) provides a record of mixed siliciclastic-volcanic rocks. The siliciclastic rocks are represented by conglomerate, sandstone and claystone, which are grouped into nine lithofacies (Gmm/mg, St, Sh, Sm, Sr, Fl, Fr, P) occur in a predictable order as repeated fining-upward cycles. Groups of associated facies are arranged into five distinct architectural elements (gravel channels, ribbon-channel, sandy channels, laminated sand shee...