Matches in SemOpenAlex for { <https://semopenalex.org/work/W4313332093> ?p ?o ?g. }
- W4313332093 abstract "Calcite-cemented concretions can reduce reservoir quality and form important low-permeability baffles for fluid flow in sandstone hydrocarbon carrier beds/reservoirs. Understanding the origin and distribution patterns of concretions has important implications for characterizing reservoir heterogeneity and developing fields. The origin of calcite concretions in non-marine sandstones lacking detrital carbonate to source the cement is poorly studied. The practical difficulty of obtaining the precipitation temperature of the concretions prevents the precise determination of the source of cement components, solute flux, pore water type and the geochemical microenvironments in which cement precipitated. Carbonate clumped isotope thermometry can give unique constraints to the temperature of concretionary cement precipitation. This study focused on outcrops of the Lower Cretaceous non-marine Qingshuihe Formation in the Urho area, on the north-western margin of the Junggar Basin (West China). Four depositional facies associations were recognized, corresponding to channel, mid-channel bar, abandoned channel and overbank floodplain environments. Calcite concretions occur only in sandstones and include spherical, ellipsoidal and tabular forms. They are isolated and/or mutually aligned in layers that tend to be either at the top, base, or within channel and mid-channel sand bodies. The clumped isotope temperatures for the concretionary calcite range from 31 to 45°C with a standard error of <3°C. The calcite has highly variable, low δ13C values ranging from −16.91 ± 0.01 to −2.93 ± 0.02‰ (Vienna Pee Dee Belemnite). The 13C-depleted bicarbonate source was linked to biodegradation of migrated oils at shallow burial owing to tectonic uplift and erosion. Calcite δ18O values are very consistent and fall between −12.30 ± 0.04 to −9.79 ± 0.31‰ (Vienna Pee Dee Belemnite). Introduction of meteoric water was a dominant mechanism for the pronounced 18O-depletion in the oxygen isotopes of pore water, along with water–rock interaction during alteration of volcaniclastic materials in sandstones. Meteoric groundwater flushed the Qingshuihe sandstones as confined aquifers down the regional palaeo-slope, biodegrading the migrated oils and enabling a sufficient solute flux for precipitation of concretions." @default.
- W4313332093 created "2023-01-06" @default.
- W4313332093 creator A5013951429 @default.
- W4313332093 creator A5056101043 @default.
- W4313332093 creator A5064000579 @default.
- W4313332093 creator A5085250508 @default.
- W4313332093 creator A5089171585 @default.
- W4313332093 date "2023-01-23" @default.
- W4313332093 modified "2023-10-16" @default.
- W4313332093 title "Calcite‐cemented concretions in non‐marine sandstones: An integrated study of outcrop sedimentology, petrography and clumped isotopes" @default.
- W4313332093 cites W1199843055 @default.
- W4313332093 cites W1482734927 @default.
- W4313332093 cites W1507799134 @default.
- W4313332093 cites W1554185681 @default.
- W4313332093 cites W1828340793 @default.
- W4313332093 cites W1878104993 @default.
- W4313332093 cites W19414449 @default.
- W4313332093 cites W1942235168 @default.
- W4313332093 cites W1946895674 @default.
- W4313332093 cites W1974293085 @default.
- W4313332093 cites W1974924765 @default.
- W4313332093 cites W1976846270 @default.
- W4313332093 cites W1983507417 @default.
- W4313332093 cites W1984847446 @default.
- W4313332093 cites W1991019381 @default.
- W4313332093 cites W1994068641 @default.
- W4313332093 cites W1997685780 @default.
- W4313332093 cites W1999241836 @default.
- W4313332093 cites W2001887170 @default.
- W4313332093 cites W2002985501 @default.
- W4313332093 cites W2005435672 @default.
- W4313332093 cites W2011013286 @default.
- W4313332093 cites W2017913935 @default.
- W4313332093 cites W2018858924 @default.
- W4313332093 cites W2020012193 @default.
- W4313332093 cites W2023928164 @default.
- W4313332093 cites W2025758339 @default.
- W4313332093 cites W2034456397 @default.
- W4313332093 cites W2044460958 @default.
- W4313332093 cites W2047335882 @default.
- W4313332093 cites W2049452866 @default.
- W4313332093 cites W2050641501 @default.
- W4313332093 cites W2061658708 @default.
- W4313332093 cites W2062408017 @default.
- W4313332093 cites W2076196781 @default.
- W4313332093 cites W2086674479 @default.
- W4313332093 cites W2086919066 @default.
- W4313332093 cites W2089846178 @default.
- W4313332093 cites W2097523643 @default.
- W4313332093 cites W2103816821 @default.
- W4313332093 cites W2106990564 @default.
- W4313332093 cites W2108622606 @default.
- W4313332093 cites W2109293499 @default.
- W4313332093 cites W2112403694 @default.
- W4313332093 cites W2113547625 @default.
- W4313332093 cites W2118131194 @default.
- W4313332093 cites W2129805855 @default.
- W4313332093 cites W2129847692 @default.
- W4313332093 cites W2131266649 @default.
- W4313332093 cites W2132292142 @default.
- W4313332093 cites W2132295818 @default.
- W4313332093 cites W2133461810 @default.
- W4313332093 cites W2140456954 @default.
- W4313332093 cites W2143220771 @default.
- W4313332093 cites W2143234761 @default.
- W4313332093 cites W2143320313 @default.
- W4313332093 cites W2147361363 @default.
- W4313332093 cites W2163959278 @default.
- W4313332093 cites W2163965050 @default.
- W4313332093 cites W2297555713 @default.
- W4313332093 cites W2517123774 @default.
- W4313332093 cites W2532673986 @default.
- W4313332093 cites W2536353039 @default.
- W4313332093 cites W2580665216 @default.
- W4313332093 cites W2594605921 @default.
- W4313332093 cites W2601241563 @default.
- W4313332093 cites W2760008588 @default.
- W4313332093 cites W2772686995 @default.
- W4313332093 cites W2806187406 @default.
- W4313332093 cites W2888980489 @default.
- W4313332093 cites W2889216838 @default.
- W4313332093 cites W2923323049 @default.
- W4313332093 cites W2943973795 @default.
- W4313332093 cites W2945081235 @default.
- W4313332093 cites W2947366632 @default.
- W4313332093 cites W2991107509 @default.
- W4313332093 cites W3010570249 @default.
- W4313332093 cites W3041078833 @default.
- W4313332093 cites W3047892708 @default.
- W4313332093 cites W3088947416 @default.
- W4313332093 cites W3119280383 @default.
- W4313332093 cites W3119778467 @default.
- W4313332093 cites W3119951374 @default.
- W4313332093 cites W3123569406 @default.
- W4313332093 cites W3126668763 @default.
- W4313332093 cites W4231995025 @default.
- W4313332093 cites W4251759016 @default.
- W4313332093 doi "https://doi.org/10.1111/sed.13071" @default.
- W4313332093 hasPublicationYear "2023" @default.
- W4313332093 type Work @default.