Are talus flatiron sequences in Spain climate-controlled landforms?

Gutiérrez, Mateo; Lucha, Pedro; Gutiérrez, Francisco; Moreno, Ana; Guerrero, Jesús; Martín-Serrano, A.; Nozal, F.; Desir, G.; Marín, C.; Bonachea, Jaime

doi:10.1127/0372-8854/2010/0054-0013

Cited by 26 publications

(35 citation statements)

References 17 publications

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“…However, in other slopes in NE Spain, the development of this accumulation stage has been observed during the Bronze Age (Burillo et al, 1981;Peña-Monné et al, 1996) and the Iron Age (Picazo-Millán, 1999Gutiérrez-Elorza et al, 2010). Iberian (N500 BC) or later remains are always located above these slopes acting as terminus ante-quem.…”

Section: The Lower Unit (Lwu)mentioning

confidence: 93%

Paleoenvironmental and geoarchaeological reconstruction from late Holocene slope records (Lower Huerva Valley, Ebro Basin, NE Spain)

et al. 2014

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Slope deposits in semiarid regions are known to be very sensitive environments, especially those that occurred during the minor fluctuations of the late Holocene. In this paper we analyse Holocene colluvium genesis, composition, and paleoenvironmental meaning through the study of slope deposits in NE Spain. Two cumulative slope stages are described during this period. In the study area, both slope accumulations are superimposed and this has enabled an excellent preservation of the aggregative sequence and the paleosols corresponding to stabilisation stages. 14C and TL dating, as well as archaeological remains, provide considerable chronological precision for this sequence. The origin of the accumulation of the lower unit is placed around 4295–4083 cal yr BP/2346–2134 cal yr BC (late Chalcolithic) and it developed until the Iron Age in a cooler and wetter climate (Cold Iron Age). Under favourable conditions, a soil A-horizon was formed on top of this unit. A new slope accumulation was formed during the Little Ice Age. Within the slope two morphogenetic periods ending with A-horizons are distinguished and related with two main cold–wet climatic events. The study of these slopes provides a great amount of data for the paleoenvironmental and geoarchaeological reconstruction of the late Holocene in NE Spain.

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Section: The Lower Unit (Lwu)mentioning

confidence: 93%

Paleoenvironmental and geoarchaeological reconstruction from late Holocene slope records (Lower Huerva Valley, Ebro Basin, NE Spain)

et al. 2014

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“…Alternating periods of accumulation and incision in the slopes may result in the generation of talus flatiron chronosequences, being the relict slopes situated further apart from the scarp the oldest ones (e.g. Gutiérrez‐Elorza et al ., , , ; Gutiérrez‐Elorza and Sesé‐Martínez, ; Schmidt, ; Boroda et al ., ). Talus flatirons typically have a concave‐up parabolic longitudinal profile and a triangular or trapezoidal shape in plan view, with the apex pointing to the scarp.…”

Section: Introductionmentioning

confidence: 99%

“…Talus flatirons have been documented in a number of arid and semi‐arid areas of the World like several Spanish Tertiary Basins (Gutiérrez‐Elorza et al ., , , ; Gutiérrez‐Elorza and Sesé‐Martínez, ), Cyprus (Everard, ), Morocco (Joly, ; Schmidt, , ), Lybia (Grunert, ); Saudi Arabia (Barth, ), the Negev Desert in Israel (Gerson, ; Dorn, ; Gerson and Grossman, ; Boroda et al ., ), the south‐western United States (Koons, ; Blume and Barth, ; Schipull, ; Schmidt, ; Schmidt and Meitz, ; Morgan et al ., ), and Fuerteventura Island in the Canary Archipielago (Gutiérrez‐Elorza et al ., ). These peculiar landforms have also been reported in peri‐glacial environments of Polar Regions: Spitsbergen, Artic Ocean (Büdel, , ), and Seymour Island, Weddel Sea, Antarctica (Gutiérrez‐Elorza et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Chronology and paleoenvironmental interpretation of talus flatiron sequences in a sub‐humid mountainous area: Tremp Depression, Spanish Pyrenees

Pau

Linares

Zarroca

et al. 2013

Earth Surf Processes Landf

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Talus flatirons are debris-covered relict slopes, disconnected from the source area, which are relatively common in arid and semi-arid areas. Talus flatiron sequences record the alternation of accumulation and incision phases. These chronosequences may be used for infer temporal changes in the morphogenetic processes acting on the slopes as well as information on the local paleoclimatic history. Talus flatiron sequences developed in the Tremp Depression, eastern Spanish Pyrenees, are analysed from the geomorphological, chronological and paleoenvironmental perspective. The two groups of relict slopes differentiated by means of detailed geomorphological mapping have been dated by optically stimulated luminescence (OSL) and radiocarbon dating at 25-20 kyr (S3) and 5Á4-1Á7 cal kyr (S2). The talus flatiron group S3 is correlated with a fluvial terrace of the Noguera Pallaresa River (c. 23 kyr BP). The comparison of the ages obtained in the Tremp Depression with chronologies published for talus flatiron sequences in semi-arid areas and other paleoclimatic proxies suggests that the aggradation phases in the slopes occurred during periods with higher humidity and vegetation cover. The chronological differences observed between semi-arid Spain and the Tremp Depression may be partly related to the more humid climate of the latter mountain area.

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“…The limestone units cap buttes, mesas and structural platforms with fields of shallow solution sinkholes. The reliefs formed by relatively thin limestone caprocks underlain by erosible sediments are frequently surrounded by sequences of talus flatirons (Gutiérrez-Elorza et al, 2010). The Ebro and Tajo basins have thick halite-and glauberite-bearing evaporitic units.…”

Section: General Overview Of the Spanish Geomorphologymentioning

confidence: 99%