High-precision chronostratigraphy of a late Pleistocene shelf-edge delta, Louisiana

Scott, Robert W.; Combes, Janet M.; Nissen, Susan E.

doi:10.2110/jsr.68.596

Cited by 7 publications

(6 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Studies of late Pleistocene deposits southeast of the ancestral Mississippi River, offshore Louisiana, lead to similar conclusions. Using log, core, and biostratigraphic data, Scott et al (1998) found that the timing of erosional surfaces (i.e., sequence boundaries) is aperiodic and not associated with any single Milankovitch frequency. These authors concluded that a suite of sedimentary processes, and not simply continental glacial cycles, is responsible for the stratigraphic evolution of passive continental margins.…”

Section: Eustasymentioning

confidence: 99%

“…These markers, obtained from cuttings while drilling in the southwestern Fuji basin, correlate to two high-amplitude reflections located toward the base of the seismic volume ( Figure 12). Pseudoemiliania lacunosa is a well-documented planktonic coccolith (Thierstein et al, 1977;Scott et al, 1998;Breard et al, 2000) that became globally extinct during marine isotope stage (MIS) 12, approximately 450-470 ka (Thierstein et al, 1977;Beu and Edwards, 1984;Caulet, 1986;Gard, 1988;Black, 1992;Wei et al, 1998;Flores and Marino, 2002;Olson and Smart, 2004). The last occurrence of P. lacunosa correlates with the base of MTC no 10.…”

Section: Age Controlmentioning

confidence: 99%

See 1 more Smart Citation

Stratigraphic controls on a salt-withdrawal intraslope minibasin, north-central Green Canyon, Gulf of Mexico: Implications for misinterpreting sea level change

Madof¹,

Christie‐Blick²,

Anders³

2009

Bulletin

View full text Add to dashboard Cite

Three-dimensional seismic data from the Fuji basin, a saltcontrolled intraslope minibasin in north-central Green Canyon, Gulf of Mexico, reveal complex interactions between gravity-and suspension-driven sedimentation. Seismic volumes for late Pleistocene (∼470 ka) to Holocene fill within the Fuji basin consist of approximately 45% mass transport complexes (MTCs), 5% channelized sandy turbidites, and 50% hemipelagites and muddy turbidites. At least ten MTCs within the Fuji basin flowed radially toward its depocenter, either from basin flanks (i.e., intrabasinal) or as a result of largerscale salt motion (i.e., extrabasinal). Sediment transport directions are inferred on the basis of elongate basal incisions and smaller-scale scours, head scarps, fold orientation within the complexes, and stratigraphic thinning trends at downdip margins. An amalgamated set of three channelized sandy turbidite complexes less than 350 m (1148 ft) thick and 3 km (1.8 mi) across represents the main sand delivery pathway into the Fuji basin. These deposits are thought to be due to shelf bypass, and possibly, to proximity to the Pleistocene shoreline. Hemipelagites and muddy turbidites are homogeneous, and their thickness is relatively consistent at basin scale. This facies represents background sedimentation.

show abstract

Section: Eustasymentioning

confidence: 99%

Section: Age Controlmentioning

confidence: 99%

Stratigraphic controls on a salt-withdrawal intraslope minibasin, north-central Green Canyon, Gulf of Mexico: Implications for misinterpreting sea level change

Madof¹,

Christie‐Blick²,

Anders³

2009

Bulletin

View full text Add to dashboard Cite

show abstract

“…Estas datações seguem as propostas de zoneamento bioestratigráfico de Ericsson & Wollin (1968), acrescida de modificações e/ou calibrações apresentadas por Vicalvi (1997), Scott et al (1998) e Kohl et al (2004) …”

Section: Methodsunclassified

“…A validade e a reprodutibilidade deste zoneamento vêm sendo deste então confirmadas por numerosos trabalhos subsequentes (e.g. Kennett & Huddlestun, 1972;Douglas, 1973;Shackleton & Opdyke, 1973;Bé et al, 1976;Keigwin Jr., 1979;Wornardt & Vail, 1980;Barash et al, 1983;Vergnaud-Grazzini et al, 1983;Schroeder, 1986;Williams et al, 1988;Shackleton, 1987;Locke & Thunell, 1988;Martin et al, 1990;Martin et al, 1993;Seto, 1995;Vicalvi, 1997;Scott et al, 1998;Kohl et al, 2004), os quais também têm contribuído com a aquisição e implementação de novas ferramentas (e.g. isótopos estáveis de oxigênio, paleomagnetismo, curvas de variação eustática, entre outros), cuja aplicação integrada mostra ser uma potencial ferramenta de reconstrução geológica, paleoclimática e também bioestratigráfica para o Quaternário (Figura 1).…”

Section: P R O V a Sunclassified

Foraminíferos bentônicos como indicadores bioestratigráficos no Quaternário superior da bacia de Campos

Barbosa¹

2010

Rev. bras. paleontol.

View full text Add to dashboard Cite

-BENTHIC FORAMINIFERA AS BIOSTRATIGRAPHIC INDICATORS ON UPPER QUATERNARY OF CAMPOS BASIN. Benthic foraminifera are very useful as environmental indicators but provide less resolution concerning the biostratigraphy due to their usual long ranges. Nevertheless, there is a general consensus that the ecological sensibility of particular bathyal assemblages is an important framework to the time constraint. This study aims the proposition of a biostratigraphic zonation to the Upper Quaternary of Campos Basin, using the distribution and frequency patterns of benthic foraminifera as indicators of the major paleoclimatic events related to the glacial and interglacial stages of the last Quaternary glacial cycle. For this purpose, 64 samples from two piston cores drilled on the continental slope of Campos Basin, southwestern Brazil were analyzed. Three benthic biozones were recognized: Cibicidoides pachyderma, Nonionella auris and Gyroidinoides nitidula, which show a good correlation between studied cores and with the international ecozones X, Y and Z.

show abstract

“…However, because their ages do not necessarily correspond from valley to valley, Otvos (2005) suggested that other factors, including differences in climate, may have contributed to the formation of the ‘Deweyville’ terraces. The total sea‐level fall during the Last Glacial Maximum, which occurred at 20 ka, is thought to have been between 90 and 120 m (Curray, 1960; McFarlan, 1961; Scott et al. , 1998; Roberts et al.…”

Section: Study Areamentioning

confidence: 99%

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

Simms¹,

Aryal²,

Miller³

et al. 2010

Sedimentology

View full text Add to dashboard Cite

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.

show abstract

High-precision chronostratigraphy of a late Pleistocene shelf-edge delta, Louisiana

Cited by 7 publications

References 21 publications

Stratigraphic controls on a salt-withdrawal intraslope minibasin, north-central Green Canyon, Gulf of Mexico: Implications for misinterpreting sea level change

Stratigraphic controls on a salt-withdrawal intraslope minibasin, north-central Green Canyon, Gulf of Mexico: Implications for misinterpreting sea level change

Foraminíferos bentônicos como indicadores bioestratigráficos no Quaternário superior da bacia de Campos

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

Contact Info

Product

Resources

About