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• W2887516469 endingPage "112" @default.
• W2887516469 startingPage "90" @default.
• W2887516469 abstract "The upper Devonian, mixed siliciclastic‑carbonate stratigraphic succession of the Geirud Formation in the Alborz Mountain Range, north of Iran, hosts numerous phosphorites and phosphatic rocks. These phosphorites, which represent one of the most globally important deposits in the Devonian, have gained little attention regarding their genesis and diagenetic evolution. This study focuses mainly on the post-depositional changes that occurred during shallow to deep burial diagenetic evolution and subaerial weathering of the Geirud phosphorites. The phosphorites consist of phosphatic massive mudclasts, detritus-rich lithoclasts, bioclasts and bones formed by several stages of phosphogenesis and erosion, reworking, winnowing and condensation associated with Famennian sea level changes. The phosphatic clasts consist of early diagenetic, poorly crystalline, carbonate fluorapatite (CFA) and pyrite cementing detrital quartz, illite, muscovite, rutile and zircon. Phosphatic clasts are intensely compacted with sutured grain contacts, along which dissolution and reprecipitation of chemically-refined, well crystalline CFA with a bright blue cathodoluminescence and illite occurred during deep burial diagenesis. Similarly, quartz shows deformation planar features; overgrowth cement was developed as a result of pressure dissolution in phosphatic sandstones, followed by precipitation of ferroan dolomite, ankerite and chlorite in secondary porosity. Subaerial weathering led to oxidation of pyrite and generation of acidic pH condition, under which Ca and P from phosphates, Fe and S from pyrite, Fe, Ca, Mg and Mn from ferroan carbonates and Al and Si from aluminosilicates were released to form goethite, psilomelane, calcite, gypsum and crandallite. The PAAS-normalized rare earth elements (REEs) show bell-shaped patterns with middle (REEs) enrichment, positive Eu anomaly and a weak negative Ce anomaly. This implies recrystallization of CFA in phosphorites and phosphatic rocks during deep burial diagenesis, deviating from the modern seawater-like REE patterns. In this regard, deep burial diagenesis affecting the upper Devonian Geirud phosphorites is possibly a common process in the Proterozoic-Paleozoic phosphorites in northern Iran and elsewhere in the world." @default.
• W2887516469 created "2018-08-22" @default.
• W2887516469 creator A5005837284 @default.
• W2887516469 creator A5018419788 @default.
• W2887516469 creator A5022769850 @default.
• W2887516469 creator A5083612504 @default.
• W2887516469 date "2018-11-01" @default.
• W2887516469 modified "2023-10-09" @default.
• W2887516469 title "Diagenetic evolution of the upper Devonian phosphorites, Alborz Mountain Range, northern Iran" @default.
• W2887516469 cites W128848223 @default.
• W2887516469 cites W1481706062 @default.
• W2887516469 cites W1521429640 @default.
• W2887516469 cites W1641647539 @default.
• W2887516469 cites W1773996933 @default.
• W2887516469 cites W1849879787 @default.
• W2887516469 cites W1940417507 @default.
• W2887516469 cites W1965208642 @default.
• W2887516469 cites W1965792897 @default.
• W2887516469 cites W1966825082 @default.
• W2887516469 cites W1971199910 @default.
• W2887516469 cites W1974948104 @default.
• W2887516469 cites W1975220765 @default.
• W2887516469 cites W1976237764 @default.
• W2887516469 cites W1977637886 @default.
• W2887516469 cites W1978080275 @default.
• W2887516469 cites W1980736078 @default.
• W2887516469 cites W198198223 @default.
• W2887516469 cites W1983611371 @default.
• W2887516469 cites W1986319571 @default.
• W2887516469 cites W1990035597 @default.
• W2887516469 cites W1993896721 @default.
• W2887516469 cites W1994269510 @default.
• W2887516469 cites W1996910113 @default.
• W2887516469 cites W1997268694 @default.
• W2887516469 cites W1998426053 @default.
• W2887516469 cites W2000860532 @default.
• W2887516469 cites W2001421941 @default.
• W2887516469 cites W2002183200 @default.
• W2887516469 cites W2005726506 @default.
• W2887516469 cites W2007213636 @default.
• W2887516469 cites W2008018897 @default.
• W2887516469 cites W2008299899 @default.
• W2887516469 cites W2011659381 @default.
• W2887516469 cites W2011801766 @default.
• W2887516469 cites W2011968190 @default.
• W2887516469 cites W2012821703 @default.
• W2887516469 cites W2016379558 @default.
• W2887516469 cites W2017867064 @default.
• W2887516469 cites W2018042912 @default.
• W2887516469 cites W2019276355 @default.
• W2887516469 cites W2019844078 @default.
• W2887516469 cites W2026665793 @default.
• W2887516469 cites W2028630457 @default.
• W2887516469 cites W2032224839 @default.
• W2887516469 cites W2033647106 @default.
• W2887516469 cites W2034046857 @default.
• W2887516469 cites W2038519446 @default.
• W2887516469 cites W2038631041 @default.
• W2887516469 cites W2038644825 @default.
• W2887516469 cites W2039869433 @default.
• W2887516469 cites W2040522153 @default.
• W2887516469 cites W2040544606 @default.
• W2887516469 cites W2043890424 @default.
• W2887516469 cites W2048185041 @default.
• W2887516469 cites W2048620592 @default.
• W2887516469 cites W2048753407 @default.
• W2887516469 cites W2050371898 @default.
• W2887516469 cites W2052694638 @default.
• W2887516469 cites W2053735414 @default.
• W2887516469 cites W2057482300 @default.
• W2887516469 cites W2062560140 @default.
• W2887516469 cites W2064819099 @default.
• W2887516469 cites W2071003343 @default.
• W2887516469 cites W2072799079 @default.
• W2887516469 cites W2073515037 @default.
• W2887516469 cites W2075941874 @default.
• W2887516469 cites W2077120489 @default.
• W2887516469 cites W2078012795 @default.
• W2887516469 cites W2079140419 @default.
• W2887516469 cites W2079193553 @default.
• W2887516469 cites W2080739556 @default.
• W2887516469 cites W2084239657 @default.
• W2887516469 cites W2084464737 @default.
• W2887516469 cites W2085596462 @default.
• W2887516469 cites W2086569190 @default.
• W2887516469 cites W2088291675 @default.
• W2887516469 cites W2088588901 @default.
• W2887516469 cites W2089462565 @default.
• W2887516469 cites W2095800565 @default.
• W2887516469 cites W2101328266 @default.
• W2887516469 cites W2112338613 @default.
• W2887516469 cites W2115253992 @default.
• W2887516469 cites W2115901915 @default.
• W2887516469 cites W2119224358 @default.
• W2887516469 cites W2121308759 @default.
• W2887516469 cites W2122123084 @default.
• W2887516469 cites W2130490621 @default.
• W2887516469 cites W2131050439 @default.

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