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Abstract
Depositionail holocene facies identified along the Huelva coast, southwestern Spain, are joined mb nine sets: (1.) lateral-fluvial bars, (2> fluvial flood plain, (3> estuarine channel, (4> tidal channel, channel-margin, (6> tidal fiat, (7> tidal delta, (8> salt-marsh and (9) sandy spit. A nomenclature of estuarine lithofacies, descriptive terrninology, as identified in different and rdated coastal environments is proposed. Estuarine lithofacies can be classified according to capital letters to represent lit.hology, small letters for physical sedimentary structures, a Greek letter for burrowing type ane, finally, a number to indicate trw burrowing degree. Nine estuarine lithofacies groups with vanous assoeiations of individual litliofacics aire distinguished: (1) gravels, (2) plant-derived organic accumulations, (~> shell accumulations, (4> burrowed clean sands, (5) unburrowed clean sands, (6> muddy sands, (7> sandy muds, (8> unburrowcd muds and (9> burrowed muds. Depositional facies occurred along the Huelva coast, with indication of every associated estuarine lithofacies group, are interpreted showing their lateral, vertical and longitudinal variability as occurred along the different estuarine domains. The application of the proposed nomenclature contribute to: (1> make the synthesis of the facies showed on the modem estuaries and (2) to facilitate the facies description in the oid estuaries as well as its comparison with thc modern ones.
Published Version
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