Authors have studied these processes for many of the world’s largest rivers including the Amazon (NITTROUER et al., 1986), the Yellow River (LIU et al., 20), the Yangtze River (CHEN et al., 2000), the Po River (CATTANEO et al., 2003), the Ganges-Brahmaputra system (KUEHL et al., 1997 GOODBRED and KUEHL, 19), the Mekong River (TA et al., 2002 XUE et al., 2010) and the Mississippi River (KNOX, 2006 BIEDENHARN et al., 2000) etc.).ĢThe Danube Delta (Fig. The structure and the evolution of deltaic systems are controlled by extremely complex processes and factors including variations in relative sea level, fluvial inputs, marine dynamics, morphology and tectonics. Situated in the contact area between continental and marine environments, deltas serve as the primary pathway for the transport of fresh water and terrigenous sediment to the coastal ocean (MILLIMAN and MEADE, 1983). BP as a result of decelerating sea-level rise (STANLEY and WARNE, 1993). Top of pageġ Most of the world’s deltaic systems started forming between 7400 and 9 500 yr. Cet article décrit également les évolutions d’origine anthropogénique qui ont eu lieu durant les deux derniers siècles. Les phases d’évolution holocènes du delta du Danube ont été précisées en croisant analyses géomorphologiques, sédimentologiques, géochimiques, minéralogiques, biologiques et surtout par datation 14C : (1) la formation de la Pointe initiale de Letea‑Caraorman vers 11 700-7 500 ans BP (2) le delta de St Georges I vers 9 000-7 200 ans BP (3) le delta de Sulina vers 7 200-2 000 ans BP (4) les deltas de St Georges II et de Kilia entre 2 500 ans BP et l’actuel (5) le delta Cosna-Sinoie entre 3 500 et 1 500 ans BP. Le delta du Danube est formé par une séquence de dépôts détritiques d’une épaisseur oscillant entre quelques dizaines et 300‑400 m qui se sont accumulés pour l’essentiel durant le Pléistocène supérieur et l’Holocène. Le contexte deltaïque est apparu durant le Quaternaire quand le Danube a commencé à se déverser dans le bassin de la mer Noire. The paper also describes the anthropogenic changes that have occurred during the last two centuries.Ĭette contribution propose une courte synthèse sur la physiographie, la géologie, l’hydrologie et l’évolution du delta du Danube durant l’Holocène. BP to present and (5) the Cosna-Sinoie Delta, 3500-1500 yr. BP (4) the St. George II and Kilia Deltas, 2500 yr. Five main evolutionary phases have been elucidated: (1) the formation of the Initial Letea-Caraorman Spit, 11700‑7500 yr. The Holocene evolution phases of the Danube Delta have been elucidated by corroborating geomorphological, structural, textural, geochemical, mineralogical and faunal analyses and mainly by 14C dating. The Danube Delta is formed of a sequence of clastic deposits ranging from tens to 300‑400 meters thick that accumulated mainly during the Late Pleistocene and the Holocene. Deltaic conditions were initiated during the Quaternary, when the Danube started flowing into the Black Sea basin. This paper presents a short synthesis on the physiography, geology, hydrology and evolution of the Danube Delta during the Holocene.
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