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Chemostratigraphy of some key European Frasnian-Famennian boundary sections (Germany, Poland, France
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- Figure 1. Diagram showing the main ‘events’ along the late D
- Figure 2. Paleogeographic reconstruction of the Upper Devoni
- Table 1. Synthetic table presenting the arguments advanced
- Table 2. Synthetic table presenting the arguments advanced i
- Figure 3. Lithologs and samples position of the investigated
- Figure 4. Location map of the Kowala section in Poland (modi
- Figure 5. Location of the Frasnian/Famennian boundary in the
- Figure 6. Location map of the Büdesheimer Bach core (modifie
- Figure 7. 4 meters core box of Büdesheimer Bach stored in th
- Figure 8. Location map of the Steinbruch Schmidt section (mo
- Figure 9. Location of the Frasnian/Famennian boundary and th
- Figure 10. The lower Kellwasser Horizon with the position of
- Figure 11. Location map of the Devonian of the Montagne Noir
- Figure 12. Location map of Coumiac (modified after House et
- Figure 13. Location of the Frasnian/Famennian boundary and t
- Figure 14. Location of the Lower Kellwasser Horizon (Bank 24
- Figure 15. Location map of La Serre trench C (modified after
- Figure 16. Location of the Frasnian/Famennian boundary in th
- Table 3. Characteristics of the ED-XRF trace elements result
- Table 4. Characteristics of the WD-XRF major and trace elem
- Figure 17. Distribution of the Al2O3 (%) contents along the
- Figure 18. Distribution of the quartz contents (Integrated i
- Figure 19. Distribution of the Ti/Al ratios along the sectio
- Figure 20. Distribution of the Si/Al ratios along the sectio
- Figure 21. Distribution of the Na/K ratios along the section
- Figure 22. Distribution of the K/Fe+Mg ratios along the sect
- Figure 23. Distribution of the Corg (%) contents along the s
- Figure 24. Distribution of the P2O5 content in excess (P2O5*
- Figure 25. Distribution of the Ba content in excess (Ba*) al
- Figure 26. Barite (left) and FluoroApatite at the F/F bounda
- Figure 27. Distribution of the V/Cr ratios along the section
- Figure 28. Distribution of the Ni/Co ratios along the sectio
- Figure 29. Framboidal pyrite in the UKWH of the Büdesheimer
- Figure 30. Framboidal pyrite in the LKWH of the Büdesheimer
- Figure 31. Distribution of the Al/(Al+Fe+Mn) ratios along th
- Figure 32. Distribution of the Cr/Al ratios along the sectio
- Figure 33. Distribution of the Mn/Al ratios along the sectio
- Figure 34. Distribution of the S contents (wt.%) along the s
- Figure 35. Framboidal pyrite at the F/F boundary in the bank
- Figure 36. Iron oxide (with Si) in the bank 13a of the La Se
- Figure 37. Distribution of the Zr/Al2O3 (*100) ratios along
- Figure 38. Distribution of the Mg/Al ratios along the sectio
- Figure 39. Factor loadings of the different standardized pro
- Figure 40. Factor loadings of the different standardized pr
- Table 5. Summarized observations made in the Kellwasser Hor
- Figure 41. Flow-chart illustrating the possible links betwee
- Figure 42. Representation of the overall process of sediment
- Table 6. Example of the ICP-MS trace elements results charac
- Figure 43. Crossplot of Corg (%) content vs. S content (%) i
- Figure 44. Crossplot of As content (ppm) vs. S content (%) u
- Figure 45. Crossplot of DOP vs. reactive iron content (ppm)
- Figure 46. Example of cubic pyrite crystals present in the L
- Figure 47. Tree diagram of the reactive elements fraction by
- Figure 48. Crossplot of DOP vs. U reactive/Th reactice ratio
- Figure 49. Tree diagram of the reactive elements fraction an
- Figure 50. Tree diagram of the trace element contents in pyr
- Figure 51. Crossplot of DOP vs. Ni content in pyrite.
- Figure 52. Tree diagram of the trace element contents in pyr
- Figure 53. Crossplot of the pyrite morphology vs. Ni content
- Figure 54. Distribution of the Mn, As, U in pyrite along th
- Figure 55. Crossplot of U content in pyrite vs. morphology a
- Figure 56. Tree diagram of the trace element contents in py
- Figure 57. Crossplot of the As content in pyrite (ppm) vs.
- Figure 58. Crossplot of the Corg content (%) and DOP vs. Cd
- Figure 59. Crossplot of P2O5* and Ba* vs. As content in pyr
- Figure 60. Crossplot of P2O5* and Ba* vs. U content in pyr
- Figure 61. Crossplot of Ni content in pyrite (ppm) vs. DOP
- Figure 62. Crossplot of the ankerite integrated intensity (
- Figure 63. Crossplot of the DOP vs. DTMP of Ni and Co inclu
- Figure 64. Model showing the parameters involved in the DTMP
- Figure 65. Model showing the parameters involved in the DTM
- Figure 66. Model showing the parameters involved in the DTMP
- Figure 67. Distribution of the DOP, the δ34Spyrite (‰ V-CDT)
- Figure 68. Crossplot of δ34Spyrite (‰ V-CDT) vs. Corg (%) an
- Table 7. Results of the synchrotron μ-XRF analysis on differ
- Table 8. Results of the Kowala section analysis.
- Table 9. Results of the Büdesheimer Bach section analysis.
- Table 10. Results of the Steinbruch Schmidt section analysis
- Table 11. Results of the Coumiac (Stratotype) section analys
- Table 12. Results of the La Serre trench C section analysis.
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Abstract: This study aimed to put constraints on regional and/or global environmental changes, which took place during the Frasnian-Famennian transition by using a geochemical multiproxy approach. The investigation of several key European Frasnian-Famennian boundary sections brings new geochemical evidences which emphasize the role of tectono-magmatic processes, like volcanism, hydrothermalism and major tectonic movements in the development of the particularities of the Kellwasser Horizons deposited close to the southern shores of Laurussia and the northern parts of Gondwana.
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Science > Earth Sciences > Geology
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Publication year : 2005
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