The Filling of an Incised Valley by Shelf Dunes—an example from Hervey Bay, East Coast OF Australia

Payenberg, Tobias H. D.; Boyd, R.; Beaudoin, Jonathon; Ruming, Kevin; Davies, Shannon; Roberts, Jason; Lang, Simon

doi:10.2110/pec.06.85.0087

Cited by 8 publications

(7 citation statements)

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“…This development is suggested by the elongated areal distribution of Facies D5 and by the abrupt interruption, just at the Isola di Capo Rizzuto village, of the relatively uniform reef buildup (Facies A1), which is replaced by deposits of facies association D. It is suggested that after the drowning of the previously exposed area, shelf currents were constricted within the valley and large sand waves migrated either upslope or downslope. A very similar case was illustrated by Payenberg et al (2006) in a drowned Late Pleistocene incised valley of east Australia. A marine setting for the larger sand waves is suggested also by the superposition of fully marine sediments (Facies B2) above Facies D5 in the Isola di Capo Rizzuto section.…”

Section: Interpretation Of Facies Association Dsupporting

confidence: 55%

Section: Facies and Sedimentary Environmentsmentioning

confidence: 99%

“…The development of such currents, which were able to move coarse sediment as bedload, might be linked to the presence of local constrictions as straits, enhancing the flow power (Phillips, 1984;Colella & D'Alessandro, 1988;Zecchin, 2005). Alternatively, both tidal resonance and an irregular sea floor may be responsible for the development of strong shelf currents, producing large sand waves (Payenberg et al, 2006;Suter, 2006). In the present context, the incision of a modest valley into older reef and shoreface deposits during a phase of sub-aerial exposure is considered to be the main factor allowing the development of a topographic irregularity.…”

Section: Interpretation Of Facies Association Dmentioning

confidence: 99%

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Sequence stratigraphy in the context of rapid regional uplift and high‐amplitude glacio‐eustatic changes: the Pleistocene Cutro Terrace (Calabria, southern Italy)

Zecchin¹,

Civile²,

Caffau³

et al. 2010

Sedimentology

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The Cutro Terrace is a mixed marine to continental terrace, where deposits up to 15 m thick discontinuously crop out in an area extending for ca 360 km2 near Crotone (southern Italy). The terrace represents the oldest and highest terrace of the Crotone area, and it has been ascribed to marine isotope stage 7 (ca 200 kyr bp). Detailed facies and sequence‐stratigraphic analyses of the terrace deposits allow the recognition of a suite of depositional environments ranging from middle shelf to fluvial, and of two stacked transgressive–regressive cycles (Cutro 1 and Cutro 2) bounded by ravinement surfaces and by surfaces of sub‐aerial exposure. In particular, carbonate sedimentation, consisting of algal build‐ups and biocalcarenites, characterizes the Cutro 1 cycle in the southern sector of the terrace, and passes into shoreface and foreshore sandstones and calcarenites towards the north‐west. The Cutro 2 cycle is mostly siliciclastic and consists of shoreface, lagoon‐estuarine, fluvial channel fill, floodplain and lacustrine deposits. The Cutro 1 cycle is characterized by very thin transgressive marine strata, represented by lags and shell beds upon a ravinement surface, and thicker regressive deposits. Moreover, the cycle appears foreshortened basinwards, which suggests that the accumulation of its distal and upper part occurred during forced regressive conditions. The Cutro 2 cycle displays a marked aggradational component of transgressive to highstand paralic and continental deposits, in places strongly influenced by local physiography, whereas forced regressive sediments are absent and probably accumulated further basinwards. The maximum flooding shoreline of the second cycle is translated ca 15 km basinward with respect to that of the first cycle, and this reflects a long‐term regressive trend mostly driven by regional uplift. The stratigraphic architecture of the Cutro Terrace deposits is the result of the interplay between regional uplift and high amplitude, Late Quaternary glacio‐eustatic changes. In particular, rapid transgressions, linked to glacio‐eustatic rises that outpaced regional uplift, favoured the accumulation of thin transgressive marine strata at the base of the two cycles. In contrast, the combined effect of glacio‐eustatic falls and regional uplift led to high‐magnitude forced regressions. The superposition of the two cycles was favoured by a relatively flat topography, which allowed relatively complete preservation of stratal geometries that record large shoreline displacements during transgression and regression. The absence of a palaeo‐coastal cliff at the inner margin of the terrace supports this interpretation. The Cutro Terrace provides a case study of sequence architecture developed in uplifting settings and controlled by high‐amplitude glacio‐eustatic changes. This case study also demonstrates how the interplay of relative sea‐level change, sediment supply and physiography may determine either the superposition of cycles forming a single terrace or the formation of a staircase o...

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Section: Interpretation Of Facies Association Dsupporting

confidence: 55%

Section: Facies and Sedimentary Environmentsmentioning

confidence: 99%

Section: Interpretation Of Facies Association Dmentioning

confidence: 99%

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Sequence stratigraphy in the context of rapid regional uplift and high‐amplitude glacio‐eustatic changes: the Pleistocene Cutro Terrace (Calabria, southern Italy)

Zecchin¹,

Civile²,

Caffau³

et al. 2010

Sedimentology

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“…Just prior to 8000 years ago, advancing sea began moving further inland to drown the lowlying river valley behind the high sandmasses of K'gari (to form Hervey Bay and Great Sandy Strait) and Cooloola (to form Tin Can Inlet) (Grimes 1992a:32-33;Ward and Grimes 1987; see also Lewis et al 2013). It appears that K'gari was cut off from the mainland by rising seas running up palaeochannels (now submerged) of the Mary River drainage system located to the north of the island (Payenberg et al 2006) and possibly at the south end of the island (Grimes 1992a:5, 32;McIntyre 1982:156, 175-176, 201).…”

Section: Palaeoenvironments and Formation Of The Inletmentioning

confidence: 99%

Aboriginal marine subsistence foraging flexibility in a dynamic estuarine environment: The late development of Tin Can Inlet (southeast Queensland) middens revisited

Smith

McNiven

2019

QAR

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<p>Although the sea arrived in southeast Queensland around 8000 years ago, most estuarine middens date to the past 1000 years. An example is midden deposits dating to the past 400 years forming the upper levels of Sites 62 and 75b from Tin Can Inlet located immediately south of the Fraser Island (K’gari) World Heritage Area. Both sites were excavated and analysed in the 1980s. This paper revisits these results following a detailed re-analysis of midden materials and new insights on regional sea level changes. Taking an historical ecology approach, species-specific habitat requirements and associated substrate sediment dynamics help explain similarities and differences between the two midden shell assemblages. Environmental factors and the location of both sites on landforms that formed following sea level fall over the past 2000 years help explain why the basal levels of both sites are probably <1000–1500 years old. Documenting pre-2000-year-old Aboriginal use of Tin Can Inlet will need to target more elevated inland dune deposits (>5m ASL) fronting the mid-Holocene sea level highstand palaeoshoreline.</p>

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“…, 2006). Other studies have shown that some incised valleys are not filled completely by sediments before the transgressive shoreline passes through or are excavated again during the transgression leaving accommodation on the shelf that is later filled with open‐marine deposits such as shelf dunes (Payenberg et al. , 2006) or sediment gravity flows (Thieler et al.…”

Section: Introductionmentioning

confidence: 99%

The incised valley of Baffin Bay, Texas: a tale of two climates

Simms¹,

Aryal²,

Miller³

et al. 2010

Sedimentology

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Baffin Bay, Texas is the flooded Last Glacial Maximum incised valley of the Los Olmos, San Fernando and Petronila Creeks along the north-western Gulf of Mexico. Cores up to 17 m in length and high-resolution seismic profiles were used to study the history of Baffin Bay over the last 10 kyr and to document the unusual depositional environments within the valley fill. The deposits of the Baffin Bay incised valley record two major and two minor events. Around 8AE0 ka, the estuarine environments backstepped more than 15 km in response to an increase in the rate of sea-level rise. Around 5AE5 ka, these estuarine environments changed from environments similar to other estuaries of the northern Gulf of Mexico to the unusual suite of environments found today. Another minor flooding event occurred around 4AE8 ka in which several internal spits were flooded. Some time after 4AE0 ka, the upper-bay mud-flats experienced a progradational event. Because of its semi-arid climate and isolation from the Gulf of Mexico, five depositional environments not found in the other incised-valley fills of the northern Gulf of Mexico are found today within Baffin Bay. These deposits include well-laminated carbonate and siliciclastic open-bay muds, ooid beaches, shelly internal spits and barrier islands, serpulid worm-tube reefs and prograding upper-bay mud-flats. Based on these unusual deposits, and other characteristics of Baffin Bay, five criteria are suggested to help identify incised valleys that filled in arid and semi-arid climates. These criteria include the presence of: (i) hypersaline-tolerant fauna; (ii) aeolian deposits; and (iii) carbonate and/or evaporite deposits; and the absence of: (iv) peat or other organic-rich deposits in the upper bay and bay-margin areas; and (v) well-developed fluvially dominated bayhead deltas.

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The Filling of an Incised Valley by Shelf Dunes—an example from Hervey Bay, East Coast OF Australia

Cited by 8 publications

References 0 publications

Sequence stratigraphy in the context of rapid regional uplift and high‐amplitude glacio‐eustatic changes: the Pleistocene Cutro Terrace (Calabria, southern Italy)

Sequence stratigraphy in the context of rapid regional uplift and high‐amplitude glacio‐eustatic changes: the Pleistocene Cutro Terrace (Calabria, southern Italy)

Aboriginal marine subsistence foraging flexibility in a dynamic estuarine environment: The late development of Tin Can Inlet (southeast Queensland) middens revisited

The incised valley of Baffin Bay, Texas: a tale of two climates

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