A 500 kyr record of global sea-level oscillations in the Gulf of Lion, Mediterranean Sea: new insights into MIS 3 sea-level variability

Frigola, Jaime; Canals, Miquel; Cacho, Isabel; Moreno, Ana; Sierro, Francisco J.; Flores, José Abel; Berné, Serge; Jouet, Gwénaël; Dennielou, Bernard; Herrera, Gemma; Pasqual, Catalina; Grimalt, Joan O.; Galavazi, M.; Schneider, Robert

doi:10.5194/cp-8-1067-2012

Cited by 45 publications

(31 citation statements)

References 59 publications

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“…For the last ca. 500 kyr, borehole data demonstrated that shelf deposits are primarily made up of forced-regressed sequences formed in response to 100 kyr glacio-eustatic cycles (Bassetti et al, 2008;Frigola et al, 2012;Sierro et al, 2009). These authors also demonstrated that higher frequency cycles, as well as suborbital climate changes, were nicely recorded within paleo-prodeltaic sedimentary archives.…”

Section: Geological Evolution Of the Rhône Subaqueous Deltamentioning

confidence: 99%

Sedimentary archives of climate and sea-level changes during the Holocene in the Rhône prodelta (NW Mediterranean Sea)

et al. 2016

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Abstract. A 7.38 m long sediment core was collected from the eastern section of the Rhône prodelta (NW Mediterranean) at 67 m water depth. A multi-proxy study (including sedimentary facies, benthic foraminifera, ostracods, and clay mineralogy) provides a multi-decadal to century-scale record of climate and sea-level changes during the Holocene. The early Holocene is marked by alternative silt and clay layers interpreted as distal tempestites deposited in a context of rising sea level. This interval contains shallow infra-littoral benthic meiofauna (e.g., Pontocythere elongata, Elphidium spp., Quinqueloculina lata) and formed between ca. 20 and 50 m water depth. The middle Holocene (ca. 8.3 to 4.5 ka cal. BP) is characterized, at the core site, by a period of sediment starvation (accumulation rate of ca. 0.01 cm yr −1 ) resulting from the maximum landward shift of the shoreline and the Rhône outlet(s). From a sequence stratigraphic point of view, this condensed section, about 35 cm thick, can be identified on seismic profiles as a maximum flooding surface that marks the transition between delta retrogradation and delta progradation. The transition between the early Holocene deposits and the middle Holocene condensed section is marked by a gradual change in all proxy records. Following the stabilization of sea level at a global scale, the late Holocene is marked by the establishment of prodeltaic conditions at the core site, as shown by the lithofacies and by the presence of benthic meiofauna typical of the modern Rhône prodelta (e.g., Valvulineria bradyana, Cassidulina carinata, Bulimina marginata). Several periods of increased fluvial discharge are also emphasized by the presence of species commonly found in brackish and shallow-water environments (e.g., Leptocythere spp.

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Section: Geological Evolution Of the Rhône Subaqueous Deltamentioning

confidence: 99%

Sedimentary archives of climate and sea-level changes during the Holocene in the Rhône prodelta (NW Mediterranean Sea)

et al. 2016

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“…Entre 100 y 530 ka el modelo de edad se obtuvo por sincronización del registro de δ 18 O del sondeo PRGL1-4 con el registro de isótopos bentónicos LR04 (Lisiecki y Raymo, 2005) (Frigola et al, 2012). La resolución temporal derivada del modelo de edad oscila entre los 160 y los 1550 años durante los períodos glaciales y los interglaciales, respectivamente.…”

Section: Figura 1 Mapa Batimétrico Del Golfo Del León (Modificado Deunclassified

“…Esta observación, junto con la cronoestratigrafía basada en el registro de δ 18 O de G. bulloides (Sierro et al, 2009) (Fig. 2D), revela que cada una de estas unidades corresponde a un episodio regresivo de bajada del nivel del mar durante un ciclo interglacial/glacial de 100 ka (Frigola et al, 2012). Se ha podido interpretar así el modelo deposicional del talud superior del GoL, donde se han identificado siete unidades (S1, S2a, S2b, S3a, S3b, S4 y S5) (Jouet, 2007) (Fig.…”

Section: En El Perfil Se Ilustran Las Secuencias Sismoestratigráficasunclassified

“…DSWC), controlados ambos por las oscilaciones globales del nivel del mar (Fig. 4) (Frigola et al, 2012). …”

Section: Bulloides (En Lila) De La Relación Limo/arcilla Des-carbonaunclassified

“…5A y C). Esta es la primera evidencia de un acoplamiento consistente, pico a pico, entre las oscilaciones del nivel del mar y la variabilidad climática de escala milenaria durante el MIS 3 (Frigola et al, 2012).…”

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La huella de las oscilaciones globales del nivel del mar durante los últimos 530 000 años en el Golfo de León y su variabilidad durante el estadio isotópico marino 3

Frigola

Canals

Cacho

et al. 2013

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Submarine landslides of the Mediterranean Sea: Trigger mechanisms, dynamics, and frequency-magnitude distribution

Úrgeles

Camerlenghi

2013

J. Geophys. Res. Earth Surf.

177

135

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[1] Submarine landslides are ubiquitous along Mediterranean continental margins. With the aim of understanding mass-wasting processes and related hazard at the scale of a large marine basin encompassing multiple geological settings, we have compiled data on their geometry, age, and trigger mechanism with a geographic information system. The distribution of submarine landslides in the Mediterranean reveals that major deltaic wedges have a higher density of large submarine landslides, while tectonically active margins are characterized by relatively small failures. In all areas, landslide size distributions display power law scaling for landslides > 1 km 3 . We find consistent differences on the exponent of the power law (θ) depending on the tectonic setting. Available age information suggests that failures exceeding 1000 km 3 are infrequent and may recur every~40 kyr. Smaller failures that can still cause significant damage might be relatively frequent (failures > 1 km 3 may recur every 40 years). The database highlights that our knowledge of submarine landslide activity with time is limited to a few tens of thousands of years. Available data suggest that submarine landslides may preferentially occur during lowstand periods, but no firm conclusion can be made on this respect, as only 70 landslides (out of 696 in the database) have relatively accurate age determinations. The temporal pattern and changes in frequency-magnitude distribution suggest that sedimentation patterns and pore pressure development have had a major role in triggering slope failures and control the sediment flux from mass wasting to the deep basin.Citation: Urgeles, R., and A. Camerlenghi (2013), Submarine landslides of the Mediterranean Sea: Trigger mechanisms, dynamics, and frequency-magnitude distribution,

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A 500 kyr record of global sea-level oscillations in the Gulf of Lion, Mediterranean Sea: new insights into MIS 3 sea-level variability

Cited by 45 publications

References 59 publications

Sedimentary archives of climate and sea-level changes during the Holocene in the Rhône prodelta (NW Mediterranean Sea)

Sedimentary archives of climate and sea-level changes during the Holocene in the Rhône prodelta (NW Mediterranean Sea)

La huella de las oscilaciones globales del nivel del mar durante los últimos 530 000 años en el Golfo de León y su variabilidad durante el estadio isotópico marino 3

Submarine landslides of the Mediterranean Sea: Trigger mechanisms, dynamics, and frequency-magnitude distribution

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