A reappraisal of active tectonics along the Fethiye-Burdur trend, southwestern Turkey

We investigate active tectonics in southwestern Turkey along the trend between Fethiye, near the eastern end of the Hellenic subduction zone, and Burdur, on the Anatolian plateau. Previously, regional GPS velocity data have been used to propose either (1) a NE-trending zone of strike-slip faulting coined the Fethiye-Burdur Fault Zone, or (2) a mix of uniaxial and radial extension accommodated by normal faults with diverse orientations. We test these models against the available earthquake data, updated in light of recent earthquakes at Acıpayam (20 March 2019, Mw 5.6) and Bozkurt (8 August 2019, Mw 5.8) — the largest in this region in the last two decades — and at Arıcılar (24 November 2017, Mw 5.3). Using Sentinel-1 InSAR and seismic waveforms and arrival times, we show that the Acıpayam, Bozkurt and Arıcılar earthquakes were buried ruptures on pure normal faults with subtle or indistinct topographic expressions. By exploiting ray paths shared with these well-recorded modern events, we relocate earlier instrumental seismicity throughout southwestern Turkey. We find that the 1971 Mw 6.0 Burdur earthquake likely ruptured a NW-dipping normal fault in an area of indistinct geomorphology near Salda Lake, contradicting earlier studies that place it on well-expressed faults bounding the Burdur basin. Overall, the northern Fethiye-Burdur trend is characterized by orthogonal normal faulting, consistent with radial extension and likely responsible for the distinct physiography of Turkey's 'Lake District'. The southern Fethiye-Burdur trend is dominated by ESE-WNW trending normal faulting, even though most faults evident in the topography strike NE-SW. This hints at a recent change in regional strain, perhaps related to eastward propagation of the Gökova graben into the area or to rapid subsidence of the Rhodes basin. Overall, our results support GPS-derived tectonic models that depict a mix of uniaxial and radial extension throughout southwestern Turkey, with no evidence for major, active strike-slip faults anywhere along the Fethiye-Burdur trend. Normal faulting orientations are consistent with a stress field driven primarily by contrasts in gravitational potential energy between the elevated Anatolian plateau and the low-lying Rhodes and Antalya basins.

Anatolian-Persian grave stelae from Bozüyük in Phrygia: a contribution to understanding Persian presence and organisation in the region

This paper provides an assessment of four grave stelae that were found recently in the area surrounding Bozüyük, on the Anatolian plateau in the south of the Bilecik province. The plateau was part of the core of the kingdom of Phrygia during the Early and Middle Iron Ages, and part of the satrapy of Phrygia during the Achaemenid period of the Late Iron Age in Anatolia. The main focus is to examine the place of such stelae among Anatolian-Persian examples and to explore elements of Persian presence and organisation in the region. The precise archaeological contexts of these stelae are unknown, but are likely to have been tumuli. They are examples of an Anatolian-Persian style from the Achaemenid period, but can also be considered to be part of a somewhat rustic 'rural' sub-style, compared with more elaborate stelae that have been found around Dascylium, the satrapal capital of Hellespontine Phrygia. The Bozüyük stelae feature banquet, hunting and ritual scenes, and also battle scenes that distinguish them from other Anatolian-Persian stelae. Despite similarities, particularly with the Vezirhan stele, there are also discrepancies that make precise analogies with reliefs on other stelae difficult, though not impossible. It is likely that they were created by a connected group of sculptors, and might therefore be evidence of a workshop that sculpted local materials in a unique rural style.

The earliest transverse grooved stones of Eurasia: Near Eastern distribution, types and chronology

Transverse grooved stones (TGS) believed to be used as shaft straighteners, first made their appearance at Epipalaeolithic sites in the Near East from where they spread to the Mediterranean coasts of Africa and Europe, but mostly to Northern Eurasia (the steppe, forest-steppe, and semi-desert zones). It has been discovered that the spread of TGA has been carried out along different paths. Moreover, grooved stones along each of these transmission routes can be distinguished by their unique decorative and morphological characteristics. The aim of this paper is to clarify the circumstances and the date of appearance of the first TGS, localization of their initial areas, and identification of their respective decorative and morphological features. This is a necessary condition for identifying the starting points of the subsequent transit carriers of TGS' tradition and tracing the directions of interaction in Eurasia during the end of the Pleistocene – the first half of the Holocene period using TGS as markers. The initial database was formed on the basis of the scientific publications on the Near East. The following is a presentation of the analytical review of at least 200 grooved stones and 80 sites in their starting area in south-western Asia. The analysis used a systematic approach with emphasis on chronology, environment, petrography, morphology, functional-typological data where such were available, and TGS’ decor. But first of all, the study pays attention to the distribution of TGS and their cultural and chronological boundaries in this region. For this purpose, it was performed the mapping of findings in two chronological levels – up to 8000 thousand BCE and after, with the marking of decorated products. The results enabled us to detect that the geographical spread of grooved artefacts of this type is limited in the Near East to the area of central Anatolia and Fertile Crescent, with a boundary along the desert-steppes. At least three concentrations can be clearly distinguished: the Levant, Zagros Mountains, and Upper Mesopotamia - central Anatolia, where the products are characterized by specific features of decorative and morphological design and in one case (Levant) an additional observed petrographic specificity. Currently, the earliest cases are recorded in Early Natufian contexts in the Levant and in Epipalaeolithic contexts of the Anatolian plateau since the 13th millennium cal BCE. Thus, one can confidently state that the introduction of TGS in the Middle East is generally linked to the Epipalaeolithic sites (Natufian, Harifian, and Western Zarzian) and is definitely associated with hunter-gatherers. The heyday of TGS falls on the PPNA and lasts to the beginning of the early Bronze Age, when they finally disappear.

Climax of the War

The initiative swung back to the Persians in 626. Two Persian armies attacked, Shahrbaraz driving Heraclius from Lake Van back to the Anatolian plateau, Shahen advancing across Transcaucasia. Shahrbaraz pressed on to the Bosporus, for a planned joint attack with the Avars on Constantinople. In the event, the Persian contingent was intercepted on the Bosporus, which left siege operations entirely in Avar hands. The huge host which they had assembled assaulted the city for ten days (29 July–7 August), deploying a full array of siege engines by land and Slav naval forces on the Golden Horn, but they could not breach the defences and withdrew on 8 August. Meanwhile, the Turks had invaded the Persian north-west across the Caucasus, and Heraclius, who had veered north on reaching Anatolia, had intercepted and destroyed Shahen’s army.

Fast Pliocene integration of the Central Anatolian Plateau drainage: Evidence, processes, and driving forces

Continental sedimentation was widespread across the Central Anatolian Plateau in Miocene–Pliocene time, during the early stages of plateau uplift. Today, however, most sediment produced on the plateau is dispersed by a well-integrated drainage and released into surrounding marine depocenters. Residual long-term (106–107 yr) sediment storage on the plateau is now restricted to a few closed catchments. Lacustrine sedimentation was widespread in the Miocene–Pliocene depocenters. Today, it is also restricted to the residual closed catchments. The present-day association of closed catchments, long-term sediment storage, and lacustrine sedimentation suggests that the Miocene–Pliocene sedimentation also occurred in closed catchments. The termination of sedimentation across the plateau would therefore mark the opening of these closed catchments, their integration, and the formation of the present-day drainage. By combining newly dated volcanic markers with previously dated sedimentary sequences, we show that this drainage integration occurred remarkably rapidly, within 1.5 m.y., at the turn of the Pliocene. The evolution of stream incision documented by these markers and newly obtained 10Be erosion rates allow us to discriminate the respective con­tributions of three potential processes to drainage integration, namely, the capture of closed catch­ments by rivers draining the outer slopes of the plateau, the overflow of closed lakes, and the avul­sion of closed catchments. Along the southern plateau margin, rivers draining the southern slope of the Central Anatolian Plateau expanded into the plateau interior; however, only a small amount of drainage integration was achieved by this process. Instead, avulsion and/or overflow between closed catchments achieved most of the integration, and these top-down processes left a distinctive sedi­mentary signal in the form of terminal lacustrine limestone sequences. In the absence of substantial regional climate wetting during the early Pliocene, we propose that two major tectonic events triggered drainage inte­gration, separately or in tandem: the uplift of the Central Anatolian Plateau and the tectonic com­pletion of the Anatolian microplate. Higher surface uplift of the eastern Central Anatolian Plateau relative to the western Central Anatolian Plateau promoted more positive water balances in the eastern catchments, higher water discharge, and larger sediment fluxes. Overflow/avulsion in some of the eastern catchments triggered a chain of avulsions and/or overflows, sparking sweeping integration across the plateau. Around 5 Ma, the inception of the full escape of the Anatolian microplate led to the disruption of the plateau surface by normal and strike-slip faults. Fault scarps partitioned large catchments fed by widely averaged sediment and water influxes into smaller catchments with more contrasted water balances and sediment fluxes. The evolution of the Central Anatolian Plateau shows that top-down processes of integration can outcompete erosion of outer plateau slopes to reintegrate plateau interior drainages, and this is overlooked in current models, in which drainage evolution is dominated by bottom-up integration. Top-down integration has the advantage that it can be driven by more subtle changes in climatic and tectonic boundary conditions than bottom-up integration.

Phylogenetic and phylogeographic analysis of Myrmeleotettix maculatus (Orthoptera: Acrididae: Gomphocerinae) species group in Anatolia

Six Anatolian and one European populations of the Myrmeleotettix maculatus species group, which contains M. maculatus and M. ethicus species, have been studied by using molecular genetics methods with mitochondrial COI gene. Myrmeleotettix ethicus is an Anatolian endemic species with local distribution whereas M. maculatus is distributed in western Palearctic. The phylogenetic analysis (ML and BI analyses) of the M. maculatus species group in Anatolia reveals that it consistently recovered two well-supported main clades and four different lineages. Molecular time estimates suggest that the diversification of the M. maculatus species group took place between the Late Tortonian (around 8-9 My) and the Middle of Pliocene-Pleistocene (around 4.3 My—present) periods and the current distribution of the genetic diversity has been affected by the uplifting of the Central Anatolian plateau, the termination of the Messinian salinity crisis, and the Quaternary climatic changes.

Hittite Cuisine: fire installations, cooking pottery and foodways in central Anatolia of the Late Bronze Age

Food and cooking methods are crucial in defining group identity and social relations and in examining the domestic economies. The Poster aims to study, from a functional and typological point of view, the fire installations and the contextual kitchen pottery in the Central Anatolia during the Late Bronze Age (1650-1200 B.C.). In particular, the archaeological contexts of the main Hittite sites of Anatolian Plateau, subjects of major interest in recent years, will be examined. The analysis and the comparison of the cooking tools (fireplaces, ovens, pots and baking plates) will allow to obtain some conclusions on the “Hittite Cuisine”, namely on the cooking techniques and the types of food consumed in the heart of Hittite kingdom. Archaeobotanical and archaeozoological data will also be integrated with the aim of a better comprehension of diets and cooking methods. In addition, some ethnographic observations will be discussed, in order to compare ancient and modern cooking practices in Anatolia.

The climatic, topographic and litho-tectonic characteristics of badlands in Turkey

<p>Badland areas are present in all continents, excluding Antarctica, and play a critical role in establishing local erosion and sedimentation rates. The presence of unconsolidated rocks (e.g., marls, sandstone, mudstone etc.) is a major driver controlling the distribution of badlands, which together with other environmental components, such as climate, tectonics, vegetation, and topography, determine their forms and processes. The mutual interaction of controlling factors in badlands areas provides a basis for developing a holistic approach to clarify their distribution patterns. Turkey's geodynamic evolution has led to the emergence of marine sedimentary rocks, pyroclastics, and continental clastics, especially in line with the uplift of the Anatolian Plateau and volcanism during the last 8 Ma.</p><p>This study aims to explore the country-scale distribution of badlands and the controlling factors of this badland distribution in Turkey. Remarkably wide badlands landscapes (4494 km<sup>2</sup>) have been visually inspected using Google Earth Pro<sup>TM</sup> to further digitize and extract geomorphological units by applying high-resolution multispectral images provided by WorldView-4/Maxar Technology and CNES/Airbus. To obtain exact boundaries, we eliminated contiguous flat areas surrounding the identified badlands by using red relief image map (RRIM) mosaics that express surface concavity and convexity combined with topographic slope derived from a digital elevation model of 5-m spatial resolution. Last, to determine the controlling factors of badlands distribution, we have compiled a global data set comprising 1-km resolution layers of mean annual precipitation, temperature and precipitation seasonality, aridity, NDVI, rainfall erosivity factor, elevation, and majority values of regional lithology in sub-catchments units. The enhanced investigation of the complex relationship that expresses the controlling factors of badlands distribution, has been conducted by K-means unsupervised cluster analysis.</p><p>Our comprehensive regional analyses exploring the distribution and environmental attributes of major Turkish badlands identified five different groups or clusters of badlands that display spatial coherence with climatic and tectonic settings. We argue that Turkey's climatic and topographic transition zones, varying from Mediterranean climate dominated areas to the more arid Central Anatolian Plateau, and tectonically‑induced topographic barriers play a relevant role in discriminating these groups of badlands. Moreover, the Anatolian diversity of sedimentary rocks, which consists of Neogene and Paleogene continental clastics, volcano clastics & pyroclastics, and lacustrine deposits, makes an essential contribution to the identified, extensive badland distribution.</p><p>This study has been produced benefiting from the 2232 International Fellowship for Outstanding Researchers Program of the Scientific and Technological Research Council of Turkey (TUBITAK) through grant 118C329. The financial support received from TUBITAK does not mean that the content of the publication is approved in a scientific sense by TUBITAK.</p>

Tectonics–Earth surface processes interactions of the Central Anatolian Plateau during the late Miocene to Pliocene revealed by ecosystem and paleotemperature reconstructions

<div> <p>The Central Anatolian Plateau (CAP, Turkey, elevation ca. 1-1.5 km) was established during the late Miocene. Prior to Pleistocene surface uplift of its southern margin (Tauride Mountains), a southern margin orographic barrier with similar-to-present elevations (ca. 2 km) existed between 8 and 5 Ma.</p> </div><div> <p>To unravel the interactions between tectonics and Earth surface processes, we quantify biotic and abiotic parameters for the late Miocene to Pliocene. As the CAP exposes presently incised fluvio-lacustrine sedimentary rocks of well-dated Miocene to Pliocene age, the region provides an excellent archive for reconstructing past landscape dynamics, such as surface uplift, lake hydrology, and drainage integration. Within this established framework, we now reconstruct the late Miocene to Pliocene ecosystem by measuring clumped isotope (Δ<sub>47</sub>) temperatures of carbonate formation and δ<sup>13</sup>C and δ<sup>18</sup>O values of paleosol carbonate and fossil mammal tooth enamel. Collectively, our data allow for the reconstruction of paleoclimate, vegetation types (C<sub>3</sub> vs. C<sub>4</sub>), mammalian diet, landscape heterogeneity, and seasonality.</p> </div><div> <p>The first clumped isotope-derived paleotemperatures indicate a large (8 <span>°</span>C) temperature difference at ca. 5.5 Ma between lacustrine carbonate from the Mediterranean coastal region (Adana Basin; ca. 26 ± 1.8 <span>°</span>C) and paleosol carbonate from the central Anatolian interior (ca. 18 ± 1.7 <span>°</span>C), which likely reflects the higher elevation of the CAP. Soil carbonate δ<sup>13</sup>C values from the plateau interior (13 sites, N= 344, ca. 10 to 2 Ma) are much higher between ca. 8 and 5 Ma (ca. –3 to 0 ‰) than earlier or later in time (ca. –8 to –5 ‰), which indicates the presence of a significant component of C<sub>4</sub> vegetation, characterized by wooded grasslands and grasslands, during the latest Miocene. In contrast, C<sub>3</sub>-dominated vegetation reflecting more wooded environments were dominant at ca. 10 Ma and from 4 to 2 Ma. The increase in C<sub>4</sub> vegetation during the late Miocene is coeval with surface uplift of the southern CAP margin, whereas an increase of C<sub>3</sub> vegetation by the Pliocene could coincide with a phase of subsidence of the southern CAP margin prior to its final phase of Pleistocene surface uplift. Furthermore, we collected mammal tooth enamel samples (equid, bovid, rhinocerotid, suid) from 11 individuals at one ca. 9 Ma-old and one latest Miocene-Pliocene<span> fossil site. </span>δ<sup>13</sup>C and δ<sup>18</sup>O values indicate the mammals at the two nearby fossil sites had varying diets and therefore access to different vegetation and water supplies. We are currently improving the stratigraphic framework and dating of these fossil sites, as well as obtaining tooth enamel δ<sup>13</sup>C and δ<sup>18</sup>O values of 44 more individuals to further constrain paleoenvironmental conditions and eventually the causality between tectonics and Earth surface processes in central Anatolia.</p> </div><div> <p><span>References:</span><strong><span> </span></strong><span>Meijers et al., 2018a: Palaeo3, doi: 10.1016/j.palaeo.2018.03.001; Meijers et al., 2018b: EPSL, doi: 10.1016/j.epsl.2018.05.040; Huang, Meijers et al., 2019: J of Biogeography, doi: 10.1111/jbi.13622; Meijers et al., 2020: Geosphere, doi: 10.1130/GES02135.1</span></p> </div>