TY - JOUR N2 - Diagenetic carbonate deposits (concretions, cementation bodies and cementstone bands) commonly occur in organic carbon-rich sequence of the Agardhfjellet Formation (Upper Jurassic) in Spitsbergen . They are dominated by dolomite/ankerite and siderite. These deposits originated as a result of displacive cementation of host sediment in a range of post-depositional environments, from shallow subsurface to deep-burial ones. Preliminary results of the carbon and oxygen isotopic survey of these deposits in southern Spitsbergen (Lĺgkollane, Ingebrigtsenbukta, Reinodden, and Lidfjellet sections) show the δ13C values ranging between –13.0‰ and –1.8‰ VPDB, and the δ18O values between –16.0‰ and –7.7‰ VPDB. These results suggest that the major stage of formation of the carbonate deposits occurred during burial diagenesis under increased temperature, most probably in late diagenetic to early catagenic environments. Carbonate carbon for mineral precipitation was derived from dissolution of skeletal carbonate and from thermal decomposition of organic matter. L1 - http://journals.pan.pl/Content/110645/PDF/ppr25-027.pdf L2 - http://journals.pan.pl/Content/110645 PY - 2004 IS - No 1 EP - 43 KW - Arctic KW - Spitsbergen KW - Agardhfjellet Formation (Jurassic) KW - diagenetic carbonate deposits KW - carbon and oxygen isotopes A1 - Krajewski, Krzysztof P. PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 25 DA - 2004 T1 - Carbon and oxygen isotopic survey of diagenetic carbonate deposits in the Agardhfjellet Formation (Upper Jurassic), Spitsbergen: preliminary results SP - 27 UR - http://journals.pan.pl/dlibra/publication/edition/110645 T2 - Polish Polar Research ER -