Holocene highstand deposits in the Gulf of Cadiz, SW Iberian Peninsula: A high-resolution record of hierarchical environmental changes

Lobo, F. J.; Fernández-Salas, L.M.; Hernández-Molina, F. Javier; González, Ramón; Dias, João Alveirinho; Río, Víctor Díaz del; Somoza, Luı́s

doi:10.1016/j.margeo.2005.06.005

Cited by 56 publications

(45 citation statements)

References 54 publications

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“…In detail, the near-shore terrace is very similar in size and depth of its edge to present-day examples of prograding wedges observed on others insular shelves along the Mediterranean area, such as in the other Aeolian Islands [22] and the Pontine Archipelago [18,30] as well as along tectonically-controlled continental margins of Southern Iberia (infralittoral prograding wedge, [31]) and Southern Italy [32]. The depth range (10-25 m) of these edges is, in fact, compatible with the estimated present-day, local storm-wave base level in the central and western Mediterranean [20,21,33], whereas it is markedly lower with respect to the edge of similar features observed around oceanic islands, where the storm-base level is deeper [13,14,23]. Based on such evidences and considering that the present-day level has been attained since ca.…”

Section: Late-quaternary Evolution Of Insular Shelf and Overlying Subsupporting

confidence: 81%

“…These features are commonly found on insular shelves and tectonically-controlled margins and are made by oblique and/or sigmoidal foresets (with slope angles between 4 • and 20 • , commonly more than 10 • ), generally sloping basinward. Their genesis has been associated to the downward transport of sediments from the surf zone and shoreface during stormy conditions [21,22]. A good match has been found between the depth of these terraces (commonly in the range of 15-60 m) and the upper 10-percentile of the local wave height distribution, evidencing the key role played by storm-wave base level in their formation [23].…”

Section: Introductionmentioning

confidence: 95%

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Submarine Depositional Terraces at Salina Island (Southern Tyrrhenian Sea) and Implications on the Late-Quaternary Evolution of the Insular Shelf

et al. 2018

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Abstract:The integrated analysis of high-resolution multibeam bathymetry and single-channel seismic profiles around Salina Island allowed us to characterize the stratigraphic architecture of the insular shelf. The shelf is formed by a gently-sloping erosive surface carved on the volcanic bedrock, mostly covered by sediments organized in a suite of terraced bodies, i.e. submarine depositional terraces. Based on their position on the shelf, depth range of their edge and inner geometry, different orders of terraces can be distinguished. The shallowest terrace (near-shore terrace) is a sedimentary prograding wedge, whose formation can be associated to the downward transport of sediments from the surf zone and shoreface during stormy conditions. According to the range depth of the terrace edge (i.e., 10-25 m, compatible with the estimated present-day, local storm-wave base level in the central and western Mediterranean), the formation of this wedge can be attributed to the present-day highstand. By assuming a similar genesis for the deeper terraces, mid-shelf terraces having the edge at depths of 40-50 m and 70-80 m can be attributed to the late and early stages of the Post-LGM transgression, respectively. Finally, the deepest terrace (shelf-edge terrace) has the edge at depths of 130-160 m, being thus referable to the lowstand occurred at ca. 20 ka. Based on the variability of edge depth in the different sectors, we also show how lowstand terraces can be used to provide insights on the recent vertical movements that affected Salina edifice in the last 20 ka, highlighting more generally their possible use for neo-tectonic studies elsewhere. Moreover, being these terraces associated to different paleo-sea levels, they can be used to constrain the relative age of the different erosive stages affecting shallow-water sectors.

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Section: Late-quaternary Evolution Of Insular Shelf and Overlying Subsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 95%

Submarine Depositional Terraces at Salina Island (Southern Tyrrhenian Sea) and Implications on the Late-Quaternary Evolution of the Insular Shelf

et al. 2018

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“…8; Patruno et al, 2015a). Delta-scale subaqueous clinoforms are subject to efficient basinal transport and sorting: therefore, their facies, grain-size, geomorphology and architecture are all more uniform than in shoreline clinoforms (e.g., near-linear plan-view morphology) (Driscoll and Karner, 1999;Kuehl, 2000a, 2000b;Chen et al, 2000;Hernández-Molina et al, 2000a;Cattaneo et al, 2003Cattaneo et al, , 2007Liu et al, 2004Liu et al, , 2006Liu et al, , 2007bLobo et al, 2005;Qiu et al, 2014;Patruno et al, 2015aPatruno et al, , 2015b.…”

Section: Delta Scale Clinoformsmentioning

confidence: 99%

“…Examples include the clinoforms offshore Australia and New Zealand (Field and Roy, 1984;Dunbar and Barrett, 2005); southern Spain-Portugal (Hernández-Molina et al, 2000a;Lobo et al, 2005;Fernández-Salas et al, 2009) (Fig. 13c), and California (Chin et al, 1988;Le Dantec et al, 2010).…”

Section: Delta Scale Clinoformsmentioning

confidence: 99%

Clinoforms and clinoform systems: Review and dynamic classification scheme for shorelines, subaqueous deltas, shelf edges and continental margins

Patruno

Helland‐Hansen

2018

Earth-Science Reviews

187

166

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A B S T R A C TClinoforms are inclined and normally basinward-dipping horizons developed over a range of spatial and temporal scales in both siliciclastic and carbonatic systems. The study of clinoform successions underpins sequence stratigraphy and all efforts to reconstruct the relative partitioning of reservoir, seal and source rocks along shoreline to basin-floor profiles.Here, we review clinoform research and propose a more systematic description and classification of clinoforms. This is a crucial step to improve predictions of facies and lithology distribution within shoreline to continental shelf and abyssal plain successions, together with the genesis, drivers and dynamics of their constituent sedimentary units.Four basic clinoform types are here distinguished in delta/shorelines, lacustrines and marine environments, on the basis of their overall spatial and temporal scale, morphology, outbuilding dynamic and geodynamic and depositional setting: (1, 2) delta-scale clinoforms, which in turns are sub-divided into shoreline and delta-scale subaqueous clinoforms; (3) shelf-edge clinoforms; and (4) continental-margin clinoforms. Delta-scale clinoform sets are tens of metres high and typically represent 1-10 3 kyr, with progradation rates ranging from 1,000-100,000 m/kyr for shorelines and "subaerial deltas" to 100-20,000 m/kyr for subaqueous deltas; shelfedge clinoform sets are hundreds of metres high and are nucleated and accreted in 0.1-20 Myr (usual progradation rates of 1-100 m/kyr) by successive cross-shelf transits of delta-scale clinoforms; continental-margin clinoform sets are thousands of metres high, hallmark key geodynamic/crustal boundaries (e.g., continent/ocean transition) and slowly prograde basinwards in ca. 5-100 Myr, with typical rates of 0.1-10 m/kyr. As a consequence of the very different progradation rates and of the difficulty of large-scale clinothems to backstep during transgressions, shorelines are the most dynamic clinoforms with regards to position, continental margins the least, and shelf-edges are intermediate. Shortly after a transgression, therefore, the four clinoform types may prograde synchronously along shoreline-to-abyssal plain transects, forming "compound clinoform" systems. During the subsequent regressive cycle, however, due to the dissimilarity in progradation rates, different clinoform types will normally merge progressively with each other, giving rise to "hybrid clinoforms" (e.g., shelf-edge deltas), and fewer depositional breaks-in-slope are distinguished along a single shoreline-toabyssal plain transect. Overall, all clinoform systems are the result of the dynamic evolution of compound and hybrid clinoforms along a temporal and spatial continuum, regulated by the cyclical backstepping of the smallerscale system within natural progradational-retrogradational cycles of larger-scale clinothem outbuilding.All clinothem types may show either an accretionary/active or draping/passive style, depending on the proximity to the sediment source. Draping clinothems are nearly...

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“…High resolution seismic profiles allow us to obtain continuous geophysical records of the surficial sedimentary units in shallow water, which improves our understanding of the sedimentary record of sea level change, with special references in the Estuarine study (Yoo and Park, 2000;Lobo et al, 2005;Ridente and Trincardi, 2005). As one of the key regions to study land-sea interactions, the Pearl River Estuary (PRE) in the Southern China has been extensively studied in fields including hydrology, chemistry, biology and geology since the 1980s as a rapid urbanization and industrialization in the surrounding Pearl River Delta (PRD) was developed.…”

Section: Introductionmentioning

confidence: 99%

Sedimentary development of the Pearl River Estuary based on seismic stratigraphy

Tang

Zhou

Endler

et al. 2010

Journal of Marine Systems

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Holocene highstand deposits in the Gulf of Cadiz, SW Iberian Peninsula: A high-resolution record of hierarchical environmental changes

Cited by 56 publications

References 54 publications

Submarine Depositional Terraces at Salina Island (Southern Tyrrhenian Sea) and Implications on the Late-Quaternary Evolution of the Insular Shelf

Submarine Depositional Terraces at Salina Island (Southern Tyrrhenian Sea) and Implications on the Late-Quaternary Evolution of the Insular Shelf

Clinoforms and clinoform systems: Review and dynamic classification scheme for shorelines, subaqueous deltas, shelf edges and continental margins

Sedimentary development of the Pearl River Estuary based on seismic stratigraphy

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