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- W2791922014 abstract "The organic-rich deposits of Late Devonian age are the second most important petroleum source rocks in the Ghadames Basin (Libya). From available stratigraphy, the peak of organic matter deposition, corresponding to a level of radioactive shales easily recognized in gamma ray logs, occurred at the Frasnian-Famennian transition. The present study was focused on samples from borehole D1–26, located in the central part of the Ghadames Basin, belonging to the Aouinet Ouenine III and IV formations (Frasnian to Famennian). The mineral and organic content of the rocks were analyzed in order to determine the origin of organic matter accumulation and estimate if the organic matter enrichment could be related to the well-known Upper Kellwasser event. The results indicate that during the Frasnian, the planktonic primary productivity was moderate, but anoxic conditions reaching the euphotic zone were frequent and allowed efficient preservation of the organic matter. At the Frasnian-Famennian transition, the deposition of the radioactive shales level can be related to a eustatic rise, which allowed incursion of nutrient-rich water in the basin, leading to increase in primary productivity and photic zone anoxia. During the Famennian, the conditions changed, associated with a relative sea level fall and/or a progradation of detrital sediments originating from the south. Photic zone anoxia was only episodic and plankton-derived organic matter was poorly preserved. Nevertheless, the important influx of organic matter of terrestrial origin allowed significant enrichment of the sediment in organic matter. Several indications suggest the radioactive shales interval could be coeval with the Upper Kellwasser level, nevertheless further stratigraphic work is needed to confirm this hypothesis." @default.
- W2791922014 created "2018-03-29" @default.
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- W2791922014 date "2018-05-01" @default.
- W2791922014 modified "2023-10-14" @default.
- W2791922014 title "Organic matter deposition in the Ghadames Basin (Libya) during the Late Devonian—A multidisciplinary approach" @default.
- W2791922014 cites W1648236804 @default.
- W2791922014 cites W1966384168 @default.
- W2791922014 cites W1969558356 @default.
- W2791922014 cites W1972385486 @default.
- W2791922014 cites W1973893544 @default.
- W2791922014 cites W1975620620 @default.
- W2791922014 cites W1978105167 @default.
- W2791922014 cites W1978295352 @default.
- W2791922014 cites W1983262056 @default.
- W2791922014 cites W1984538495 @default.
- W2791922014 cites W1988508637 @default.
- W2791922014 cites W1990100158 @default.
- W2791922014 cites W1992578419 @default.
- W2791922014 cites W1992683410 @default.
- W2791922014 cites W1992713158 @default.
- W2791922014 cites W1995336154 @default.
- W2791922014 cites W1995575035 @default.
- W2791922014 cites W1997756468 @default.
- W2791922014 cites W1998138507 @default.
- W2791922014 cites W2000232244 @default.
- W2791922014 cites W2004995192 @default.
- W2791922014 cites W2005029962 @default.
- W2791922014 cites W2005353275 @default.
- W2791922014 cites W2005428926 @default.
- W2791922014 cites W2007929566 @default.
- W2791922014 cites W2008975622 @default.
- W2791922014 cites W2009588513 @default.
- W2791922014 cites W2009607369 @default.
- W2791922014 cites W2016645135 @default.
- W2791922014 cites W2019338098 @default.
- W2791922014 cites W2019355929 @default.
- W2791922014 cites W2019839279 @default.
- W2791922014 cites W2020886444 @default.
- W2791922014 cites W2023340085 @default.
- W2791922014 cites W2025703665 @default.
- W2791922014 cites W2030178661 @default.
- W2791922014 cites W2030584186 @default.
- W2791922014 cites W2032155609 @default.
- W2791922014 cites W2034111496 @default.
- W2791922014 cites W2035341192 @default.
- W2791922014 cites W2037451857 @default.
- W2791922014 cites W2037603460 @default.
- W2791922014 cites W2037680694 @default.
- W2791922014 cites W2039932620 @default.
- W2791922014 cites W2042642249 @default.
- W2791922014 cites W2043438570 @default.
- W2791922014 cites W2045105366 @default.
- W2791922014 cites W2048794556 @default.
- W2791922014 cites W2049621326 @default.
- W2791922014 cites W2050307181 @default.
- W2791922014 cites W2053080324 @default.
- W2791922014 cites W2055561004 @default.
- W2791922014 cites W2055994329 @default.
- W2791922014 cites W2056091230 @default.
- W2791922014 cites W2057589450 @default.
- W2791922014 cites W2072452222 @default.
- W2791922014 cites W2076389367 @default.
- W2791922014 cites W2076854433 @default.
- W2791922014 cites W2076907994 @default.
- W2791922014 cites W2077005422 @default.
- W2791922014 cites W2080159193 @default.
- W2791922014 cites W2080824741 @default.
- W2791922014 cites W2083645617 @default.
- W2791922014 cites W2085075988 @default.
- W2791922014 cites W2085719400 @default.
- W2791922014 cites W2086812157 @default.
- W2791922014 cites W2088617006 @default.
- W2791922014 cites W2089194183 @default.
- W2791922014 cites W2093561073 @default.
- W2791922014 cites W2115360246 @default.
- W2791922014 cites W2116272763 @default.
- W2791922014 cites W2119855749 @default.
- W2791922014 cites W2120358125 @default.
- W2791922014 cites W2121579714 @default.
- W2791922014 cites W2123812497 @default.
- W2791922014 cites W2126049533 @default.
- W2791922014 cites W2128116599 @default.
- W2791922014 cites W2128671902 @default.
- W2791922014 cites W2128870723 @default.
- W2791922014 cites W2130529687 @default.
- W2791922014 cites W2130837160 @default.
- W2791922014 cites W2131523833 @default.
- W2791922014 cites W2139499143 @default.
- W2791922014 cites W2140801787 @default.
- W2791922014 cites W2149006659 @default.
- W2791922014 cites W2149081058 @default.