Signatures of climate vs. sea-level change within incised valley-fill successions: Quaternary examples from the Texas GULF Coast

Blum, Michael D.; Aslan, Andres

doi:10.1016/j.sedgeo.2006.05.024

Cited by 147 publications

(146 citation statements)

References 66 publications

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“…Wood samples collected at depths of 1.0 and 3.5 m below the Deweyville surface yielded AMS radiocarbon ages of 17,080 ± 90 (ISGS-A1513) and 23,730 ± 100 (ISGS-A1183) yr B.P., respectively. These ages are consistent with the numerical chronology of the Deweyville Formation (Blum and Aslan, 2006).…”

Section: Geochronologysupporting

confidence: 88%

“…The specimen was found in sandy bone-bearing deposits that are equivalent to the Deweyville Formation, which is inset into the Lissie Formation. Blum and Aslan (2006) have provided the most comprehensive discussion on the history of the Deweyville. They noted that the larger streams on the Texas Gulf Coastal Plain exhibit at least three suites of Deweyville landforms/deposits that represent streams that were graded to lower sea levels during the Pleistocene low sea-level stands.…”

Section: Location Geomorphology and Stratigraphic Contextmentioning

confidence: 99%

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The first occurrence of a toxodont (Mammalia, Notoungulata) in the United States

Lundelius

Bryant

Mandel

et al. 2013

Journal of Vertebrate Paleontology

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Section: Geochronologysupporting

confidence: 88%

Section: Location Geomorphology and Stratigraphic Contextmentioning

confidence: 99%

The first occurrence of a toxodont (Mammalia, Notoungulata) in the United States

Lundelius

Bryant

Mandel

et al. 2013

Journal of Vertebrate Paleontology

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“…This led to terrace threads with a much steeper gradient than the current floodplain. Similar strong control of base level has been reported for other areas with short steep continental shelves around the world, for instance in southwest Iberia (Vis, Kasse, & Vandenberghe, 2008) and the United States (Blum & Aslan, 2006;Blum & Törnqvist, 2000). Climate-induced variations in discharge and sediment supply on the other hand, seemed to have had a less important effect on terrace formation as suggested by modelling experiments (Viveen et al, 2013).…”

Section: Discussionsupporting

confidence: 74%

Fluvial terraces of the northwest Iberian lower Miño River

et al. 2013

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A new fluvial terrace map with a tectonic framework for the northwest Iberian lower Miño River is presented. It is the first integrated map to cover the entire lower, 67-km reach of the Miño River, and to cover both the Spanish and Portuguese side of the river. The map is presented at a scale of 1:200,000, although its features were mapped at a scale of 1:5000. Various map layers can be viewed, such as a digital elevation model (DEM), fluvial sediment thickness layers, a palaeoflow direction layer, a lineament and fault layer, and two terrace and tectonic basin layers, showing up to 10 fluvial terraces and a floodplain level. Interpretation of the map shows that next to regional tectonic uplift and glacioeustacy, local basin subsidence and small-scale block movement are very important for the fluvial network, localised fluvial terrace formation, and preservation.

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“…Beyond the hydrological, geomorphological, ecological and engineering implications of avulsions, geomorphologists and sedimentologists increasingly see avulsions, rather than lateral migration and overbank deposition, as the major mechanism of floodplain construction in many river systems (Slingerland and Smith, 2004;Blum and Aslan, 2006). (Blum and Aslan, 2006). Much of the research on river avulsions in general, and in the Gulf Coast region in particular, has focused on the sedimentary record, due to the critical role of avulsions in floodplain construction and the major influences on alluvial architecture.…”

Section: Introductionmentioning

confidence: 99%

Avulsion regimes in southeast Texas rivers

Phillips

2008

Earth Surf Processes Landf

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Avulsions -relatively sudden changes in course, or establishment of new anabranches -are an important process in alluvial rivers. Their key role in floodplain construction and alluvial architecture, and the general conditions favouring avulsions, are well known. However, avulsion processes and evolution, and the factors controlling avulsion regimes, are poorly understood. In the southeast Texas coastal plain, where avulsions are common features of the river valleys, avulsions were studied on the lower Brazos, Navasota, Trinity, Neches and Sabine rivers using a combination of aerial imagery, digital elevation models and field surveys. Avulsions have important influences on the surface morphology and contemporary processes in all five rivers. Features associated with avulsions are active and distinct throughout the study area, and all the rivers have experienced geologically (if not historically) recent avulsions. However, no two of the study rivers have the same contemporary avulsion regime. First-order differences in avulsion style are controlled by the stage of valley filling, and within the three rivers characterized by an unfilled incised valley, antecedent morphology associated with late Quaternary and Holocene coastal and fluvial-deltaic processes accounts for the major differences. In the Navasota (27 avulsions in 185 km) and Neches (21 in 340 km) rivers, subchannels associated with avulsions exist in all stages of development from active to infilled, and some have occurred in recent decades. The other rivers have fewer avulsions, but both the Sabine and Trinity have experienced historic channel shifts. Only the Brazos River has experienced no avulsions within the past c. 300 years. Results show that even within a region of similar environmental controls and geological history local variations in inherited morphology can result in different avulsion regimes.

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Signatures of climate vs. sea-level change within incised valley-fill successions: Quaternary examples from the Texas GULF Coast

Cited by 147 publications

References 66 publications

The first occurrence of a toxodont (Mammalia, Notoungulata) in the United States

The first occurrence of a toxodont (Mammalia, Notoungulata) in the United States

Fluvial terraces of the northwest Iberian lower Miño River

Avulsion regimes in southeast Texas rivers

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