Publicación: Los Episodios marinos cuaternarios de la costa de Málaga (España)
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1993
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Sociedad Geológica de España
Resumen
La secuencia de antiguas posiciones del nivel del mar durante el Cuaternario, está representada en la costa de Málaga por ocho paleolineas de costa de las que existen registros morfológicos y/o sedimentológicos, distribuidos entre las cotas de O a + 73 m Dos de estos episodios marinos contienen fauna cálida con Strombus bubonius. La correlación de estos niveles marinos con los que se observan en la costa de Almería, en donde las altas paradas del nivel del inar cuaternario son bien conocidas y datadas por diferentes métodos, sugiere la presencia en la costa de Málaga de dos episodios del Pleistoceno inferior ( + 73 m y +55 m) y tres en el Pleistoceno medio ( +26 m, + 18 m y + 12 m), el más reciente de estos perteneciente al ciclo Tirreniense. El Ultimo Interglacial estaría representado por dos niveles que contienen S. bubonius (Tirreniense II y III). Restos de socaves y cordones litorales por encima del cero actual son los testigos del máximo Holoceno (Flandriense). La actividad de los accidentes tectónicos ENE-WSW, Nl0°-20°E y N120°-l50°E durante los últimos 200.000 años controla la distribución geométrica y espacial de los episodios marinos del Ultimo Interglacial, la altimetría de sus máximos transgresivos y el trazado de la costa actual.
The quaternary highstands sea-level sequence of the Málaga littoral is formed by, at least, eight majar episodes with morphological and/or sedimentary records, which are staircased from +73 m to the present sea-level. The comparision of these sequences with the well known dated ones of the Almería coast, suggest their correlation with two lower Pleistoceno units ( + 73 m and +55 m), and three upper Pleistocene units (+26m, +18m and +12m), being the most recent episodes related to Tyrrhenian cycle.The Last Interglacial event is represented by two episodes bearing Strobus bubonius (Tyrrhenian II and III). The Holocene sea-level highstand (Flandrian) recorded at 0,5-1 m above sea-level with erosiona! morphologies (notchs and benchs) and deposits (beaches and spit bars). The geometry and spatial distribution of the Last Interglacial marine episodes, the altitude of their relative highstand sea-level, and the morphology of the present coastline, seems to be controlled by the activity of the ENE-WSW, N10°-20°E and N120°- 1500E fractures during the last 200.000 years.
The quaternary highstands sea-level sequence of the Málaga littoral is formed by, at least, eight majar episodes with morphological and/or sedimentary records, which are staircased from +73 m to the present sea-level. The comparision of these sequences with the well known dated ones of the Almería coast, suggest their correlation with two lower Pleistoceno units ( + 73 m and +55 m), and three upper Pleistocene units (+26m, +18m and +12m), being the most recent episodes related to Tyrrhenian cycle.The Last Interglacial event is represented by two episodes bearing Strobus bubonius (Tyrrhenian II and III). The Holocene sea-level highstand (Flandrian) recorded at 0,5-1 m above sea-level with erosiona! morphologies (notchs and benchs) and deposits (beaches and spit bars). The geometry and spatial distribution of the Last Interglacial marine episodes, the altitude of their relative highstand sea-level, and the morphology of the present coastline, seems to be controlled by the activity of the ENE-WSW, N10°-20°E and N120°- 1500E fractures during the last 200.000 years.
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altas paradas del nivel del mar, Tirreniense, Strombus bubonius, Flandriense, ultimo interglacial, Cuaternario, highstands sea-level, Tyrrhenian, Strombus bubonius, Flandrian, last interglacial, Quaternary
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Centro
Facultad de Ciencias
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Ciencias Analíticas
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Geología Aplicada al Medio Ambiente (GAMA)