Catherine Kuzucuoglu - Academia.edu (original) (raw)

Uploads

Papers by Catherine Kuzucuoglu

The Upper Tigris Basin (SE Turkey) is a Tertiary subsidence basin between the edge of the Southea... more The Upper Tigris Basin (SE Turkey) is a Tertiary subsidence basin between the edge of the Southeast Taurus and the Mardin Plateau. In this region, some very interesting landforms are caused by geomorphological processes affecting Tertiary-aged gypsum karst. These are collapse dolines related at places to tectonic fractures of faults, widely occurring east of Bismil city, especially along streams Some of these structures contain deep or shallow lakes contrasting with the surrounding very dry environment.
Several types of dolines are encountered:
- The majority is circular; a few exhibit an almond-like form.
- Some dolines contain lakes fed by more or less abundant underground water with the possible addition of a rill eroding the plateau above. Lakes in these karstic structures always occur because an impermeable clay layer resulting from gypsum alteration cover the bottom of the depression.
- Some (rare) collapse dolines are deep and encircled by cliffs, but the majority consists of shallow depressions at different stages of evolution. Most of the deep dolines are distributed along a lineament north of the Tigris valley corresponding to a probable fault line. The shallowest dolines often contain (but not always) shallow lakes impacted by the drainage of irrigated fields.

If, in the past, the oldest dolines contained permanent lakes fed by precipitation (+ runoff in some cases) and precipitation-responding underground water, (a) the lake levels must have varied according to their sensitivity to humidity (precipitation), vegetation cover and evaporation; (b) lake sediments may record past climatic variations. Besides, these lakes providing a water resource for human and animal needs, it is not surprising that Neolithic and Chalcolithic sites are found close to some dolines.

Revue Géographique de l'Est, 1990

Quaternary Science Reviews, 1999

Soda Lake Van is a very important reference site for Late Glacial and Holocene palaeoenvironmenta... more Soda Lake Van is a very important reference site for Late Glacial and Holocene palaeoenvironmental records in the Caucasus, Near and Middle East. Influenced by past climatic regimes, changes in the hydrology of Lake Van being very sensitive to humidity and temperature changes, past climates and environments have been studied from deep lake sediments (Landman et al., 1996, Degens &.Kurtmann, 1978, Litt et al., 2009). Meanwhile, more precise and also older lake records are available in wide terraces around the lake. From these records (Christol et al., in press), a first reconstruction of past level changes evidences a rise up to +85m during Late Pleistocene, and an older rise up to >= +110m (Kuzucuoglu et al. in press). Today's threshold of Lake Van is positioned at +90m (in the vicinity of Tatvan city), and must be related to the + 85m lake maximum (Late Pleistocene). However, this + 90m threshold must be younger than the >= +110m rise evidenced at several places around the lake, for which an older threshold must have existed higher, today eroded or destructed. The solution to this problem has been searched for in the Göllü polje area. Located very close to the south-western coast of Lake Van, the Göllü Polje opens at the foot of a high metamorphic massif. Today, this closed basin is isolated to the north from Van Lake by a limestone barrier only +91 m high, and to the south from the Tigris headwaters by a threshold positioned +120 m (1766m) above today's lake level. In this latter place as in other critical points of the drainage pattern related to the isolation of the polje, we identified thick ash falls (pumices and scoriae) burying fossil flood plains at the location of capture areas and drainage disappearance. These ash falls, emitted by two nearby volcanoes, the Nemrut and Incekaya, increased the apparent height of the thresholds around the polje, and deeply disturbed the drainage pattern in the area connecting Lake Van and the Tigris headwaters. In order to check the possible invasion of the polje by Lake Van during the > 110m transgression maximum, we extracted a ca. 7m long sequence from the polje floor. Sediment analyses allow the relative dating of this fill as younger than the > 110m transgression maximum (no soda lake water intrusion). They evidence also a more-or-less regular phasing of high/low Göllü lake phases, interrupted by temporary flooding periods (polje functioning). They suggest that the high Göllü polje phases were both commanded by abundant water input from the drainage area (humidity? snowmelt?) and by static equilibrium with Pleniglacial high Lake Van levels evidenced in the terraces at + 55 m. Keywords: Lake Van, past climates, lake level changes, Lake Van threshold, karst.

In arid and semi-arid areas, like inner Anatolia, small change in precipitation and evaporation r... more In arid and semi-arid areas, like inner Anatolia, small change in precipitation and evaporation rates can have marked effects on the water environment of inland lakes at closed basins. This study demonstrates the importance of detailed diatom analyses in attempt to identify lake level and lake water quality changes of inland lakes in Turkey. An important first step in using

Quaternaire, 2002

... Damase MOURALIS1, Jean-François PASTRE1, Catherine KUZUCUOGLU1 2, Ahmet TURKECAN3, Yelda ATIC... more ... Damase MOURALIS1, Jean-François PASTRE1, Catherine KUZUCUOGLU1 2, Ahmet TURKECAN3, Yelda ATICP, Ludovic SLIMAK4, Hervé GUILLOU5, et Stéphane ... Sok 22, PK 54, Beyoglu, 80072, Istanbul (Turquie) 3 Maden Tetkik ve Arama (MTA), Genel Mudurlugu, Jeoloji ...

Asf Association Des Sedimentologistes Francais, 2001

... Source / Source. Congrès 8e congrès français de sédimentologie : ( Orléans, 12-14 novembre 20... more ... Source / Source. Congrès 8e congrès français de sédimentologie : ( Orléans, 12-14 novembre 2001, livres des résumés et des excursions ) Congrès français de sédimentologie N o 8, Orléans , FRANCE (12/11/2001) 2001 , n o 37, pp. ...

Quaternary Science Reviews

Géomorphologie : relief, processus, environnement, 1997

Norois, 2009

... La vulnérabilité des voies de communication. ... Les routes antiques de la vallée, probableme... more ... La vulnérabilité des voies de communication. ... Les routes antiques de la vallée, probablement situées juste en contrebas des versants, étaient vulnérables à deux dynamiques ... On sait maintenant que les sites de Xanthos et Létôon ont été construits et occupés dans un paysage ...

Géomorphologie : relief, processus, environnement, 2013

Carie et Lycie méditerranéenes : échanges et identités, p. à L a plaine de Xanthos et létôon : un... more Carie et Lycie méditerranéenes : échanges et identités, p. à L a plaine de Xanthos et létôon : une plaine deltaïque

In the Hellenistic period, according to Strabo, Xanthos and Letoon were very important cities and... more In the Hellenistic period, according to Strabo, Xanthos and Letoon were very important cities and major holy places in Lycia, a peninsula in southwestern contemporary Turkey. An archaeological study of the sites of Xanthos and Letoon cannot assume that the environment in which they are located did not change since the arrival of the first settlers in the seventh century