Time of Sedimentation
A team of Russian sedimentologists, directed by Alexander Lalomov (Russian Academy of Sciences, Institute of Ore Deposits) applied paleohydraulic analyses to geological formations in Russia. One example was the publication of a first report in 2007 by the “Lithology and Mineral Resources”, journal of the Russian Academy of Sciences. It concerned the Crimean Peninsular. It showed that the time of sedimentation of the sequence studied corresponded to a virtually instantaneous episode, whereas according to stratigraphy it took several millions of years. Moreover, a second report concerning the North-West Russian plateau in the St. Petersburg region shows that the time of sedimentation was much shorter than that attributed to it by the stratigraphic time-scale: 0.05% of the time.
The third report concerning the the Ural determines equally the time of sedimentation.
I concluded an agreement with the Institute of Kazan for the Moskovite team of sedimentologists to determine the paleohydraulic conditions of the local transgressive sequence studied in 1868 by Golovkinskii, founder of sequence stratigraphy.
This forth report determines equally the time of sedimentation.
We presented their report to the 33rd International Congress of Geology held in Oslo in August 2008, and in Ekaterinburg (Russia), in October at the 5th Conference on Lithology.
A new series of experiments was arranged with the St. Petersburg Institute of Hydrology to study erosion of different types of rocks (sandstone, limestone) at higher velocities of water current up to 27ms to ascertain their rate of erosion over time and to provide the formation of conglomerates, to know the critical velocity of erosion of conglomerates seen in sandstone at the base of transgressive sequences. Initially, the water current was parallel to the surface plane of the sedimentary sample. The results show that at a velocity of around 25ms, erosion was nil; where the period of the experiment was less than an hour. However, when the period reached 18h the erosion was around 2 grams. Experiment 25 was done with a sample whose surface was at an angle of 2.5 degrees to the direction of the current. In this case erosion reached 6.6g. in 18h.
Papers
Please note that some of these documents are scans of the original and may take long to download.
Dilly, R., Berthault, G.: “Orogenesis: Cause of sedimentary formations” – The Russian Academy of Sciences scientific Council on Lithology and Minerals in Sedimentary Formations – VIII All-Russian Lithological Meeting (Moscow, 27-30 October 2015), Tome II, pp. 162-164
Berthault, G. : “Orogenesis: Cause of sedimentary formations” – Kazan Golovkinsy Stratigraphic Meeting, 2014, pp.19-20
Lalomov, A., Berthault G., Tugarova, M., Isotov V., Sitdikova L.: “Reconstruction of sedimentary conditions of Middle Permian Kama-Ural basin studied by N.A.Golovkinsky” – Kazan Golovkinsy Stratigraphic Meeting, 2014, pp.53-54
Berthault, G. : “Orogenesis: cause of sedimentary formations” – “Open Journal of Geology“ ISSN 2161-7570.Vol 3, Number 28, April 2013.
Berthault G. : “Towards a Refoundation of Historical Geology” – “Georesources” 1(12) 2012, p.38, 39
Berthault, G., Lalomov, A. V. and Tugarova, M. A. : “Reconstruction of paleolithodynamic formation conditions of Cambrian-Ordovician sandstones in the Northwestern Russian platform” – “Lithology and Mineral Resources, 2011, Volume 46, Number 1, 60-70” (Springer Publishing site)
Berthault, G., Veksler A.B., Donenberg V.M. , Lalomov A. : “RESEARCH on EROSION OF CONSOLIDATED and semi-consolidated SOILS BY HIGH SPEED WATER FLOW” Izvestia.VNIIG., 2010, Vol. 257, pp.10-22. – (Russian original.)
Lalomov, A. : “Reconstruction of Paleohydrodynamic Conditions during the Formation of Upper Jurassic Conglomerates of the Crimean Peninsula”, Lithology and Mineral Resources, 2007, Vol. 42, No. 3, pp. 268–280
Berthault, G : “Sedimentological Interpretation of the Tonto Group Stratigraphy (Grand Canyon Colorado River)” , Lithology and Mineral Resources 2004, Vol. 39, No 5. October 2004.
Berthault G., “Analysis of Main Principles of Stratigraphy on the Basis of Experimental Data”, Litol.Polezn.Iskop.2002, vol 37, no.5,pp 509-515 (Lithology and Mineral resources 2002 (fac-similé) (Engl.Transl.), vol.37, no.5, pp442-446), Journal of the Academy of Sciences of Russia.
Julien, P.Y., Lan, Y., and Berthault, G., “Experiments on Stratification of Heterogeneous Sand Mixtures”, Bulletin Société Géologique de France, 1993, vol. 164, no. 5, pp. 649–660.
Berthault, G., “Sedimentation of a Heterogranular Mixture. Experimental Lamination in Still and Running Water”, Compte rendu de l’Académie des Sciences 1988, vol. 306, Serie II, pp. 717–724.
Berthault, G., “Sedimentologie: Expériences sur la lamination des sédiments par granoclassement périodique postérieur au dépôt. Contribution a l’explication de la lamination dans nombre de sédiments et de roches sédimentaires”., Compte rendu de l’Académie des Sciences de Paris 1986 , vol. 303, Ser., 2, no. 17, pp. 1569-1574.
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Lalomov, A. and Tugarova, M. A. : REPORT for 2008 joint research of Geological Laboratory ARCTUR (Moscow) and Lithological department of Geological Faculty of St.-Petersburg State University “RECONSTRUCTION OF PALEOHYDRAULIC CONDITIONS OF DEPOSITION OF PERMIAN STRATA OF KAMA REGION STUDIED BY GOLOVKINSKY”
Lalomov, A. : FINAL REPORT for 2006 – 2007 joint research of Geological Laboratory ARCTUR (Moscow) in co-operation with Institute of Geology of Ore Deposits Russian Academy of Science (IGEM RAS) and Research – Exploration Centre “Monitoring” (Khanty–Mansiisk, West Siberia) – “PALEOCHANNELS OF URAL FOLDED BELT AND PIEDMONT AREA: RECONSTRUCTION OF PALEOHYDRAULIC CONDITIONS”