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January 2004 - present
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Publications (85)
Luminescence surface exposure dating has increasingly been utilized in palaeoseismological studies, particularly in the examination of active fault scarps in regions such as the United States, China, and Turkey. Western Anatolia serves as a natural laboratory for applying exposure dating techniques to active fault scarps, where the region's deforma...
Investigation of palaeo-earthquake on active fault has been traditionally conducted using trench-based palaeoseismology. However, in recent years, it has been evaluated alternative methods such as cosmogenic 36Cl and Optical Stimulated Luminescence (OSL) applying surface-based fault scarp.
The Kalafat Fault composes the west segment of the Kuşadas...
The Tuzla Fault (TF), considered one of the most important seismic sources in İzmir province, is defined as a strike–slip fault with N10E–N60E striking between Gaziemir and Doğanbey districts. A 50-km-long fault consists of three segments which are, from north to south Çatalca, Orhanlı, and Doğanbey segments. Recent studies claim that the part of t...
While there has been significant research on the dating of paleoearthquakes using methods such as surface cosmogenic dating, and trench-based luminescence or radiocarbon dating, this paper focuses on implementing an alternative surface dating method using a fault scarp-based optically stimulated luminescence (OSL) dating approach. Hence for the fir...
The development and application of luminescence dating and dosimetry techniques have grown exponentially in the last several decades. Luminescence methods provide age control for a broad range of geological and archaeological contexts and can characterize mineral and glass properties linked to geologic origin, Earth-surface processes, and past expo...
In order to decipher the late Pleistocene-Holocene seismotectonic behavior of the Gülbahçe Fault Zone (GBFZ), trench-based palaeoseismological analyses were performed for the first time using optically stimulated luminescence and radiocarbon (14 C) dating. The paleoseis-mic data from this study shows that (i) GBFZ has been responsible for four surf...
İzmir ilinde önemli sismik kaynaklardan biri olarak kabul edilen Tuzla Fayı (TF), Gaziemir ile Doğanbey ilçeleri arasında K10D- K60D arasında uzanıma sahip doğrultu atımlı fay olarak tanımlanmıştır. Toplam uzunluğu 50 km’nin üzerinde olan fay kuzeyden güneye doğru Çatalca, Orhanlı ve Doğanbey olmak üzere, 3 segmentten
oluşmaktadır. Şimdiye kadar ya...
The timing of the deposition of the well-preserved Quaternary marine terraces in the coastal region of northeastern Turkey are crucial in understanding the Quaternary tectonics of the Pontides. The chronology of raised marine terraces between Trabzon and
Rize has remained unrevealed because of chronologic limitations. This study aims to establish c...
In the city of İzmir and its surroundings NE-SW trending strike-slip faults of the İzmir Balıkesir Transfer Zone (İBTZ) act with approximately E-W trending dip-slip normal faults. These active faults range in length from 12 to 70 km and are capable of producing earthquakes up to MW 7 as indicated on active fault maps of Turkey. The Samos earthquake...
Although the Greater Caucasus (GC) Mountains accommodate a significant fraction of orogen-perpendicular Arabia-Eurasia convergence at their longitude, the locations and slip rates of the active structures absorbing this shortening are poorly known. Here we report the first late Quaternary shortening rate for an active thrust in the GC determined fr...
The impetus behind this study is to understand the sedimentological dynamics of very young fluvial systems in the Amazon River catchment and relate these to land use change and modern analogue studies of tidal rhythmites in the geologic record. Initial quartz optically stimulated luminescence (OSL) dating feasibility studies have concentrated on sp...
Extensive luminescence and 14C dating of aeolian sand dunes and sheets in the Central Great Plains (CGP) have been biased toward the western part of the region, targeted relatively large dune fields, and produced primarily Holocene (Marine Isotope Stage (MIS) 1) and latest Pleistocene (MIS 2) ages. This research luminescence
dated a small discontin...
: In recent years, many multidisciplinary studies have emphasized that the necessity of taking Anthropocene interval apart from the Holocene, based on the anthropogenic impact on the recent geological processes has reached observable and quantifiable amount. However, the investigations in related to the definition in terms of temporal and spatial o...
There is no study related to Cenozoic deformations in the Eastern Pontides which accommodate deformations between North Anatolian Fault System and Black sea, even though it forms North Anatolian Fault Zone at the north, Northeast Anatolian Fault and Borjomi- Kazbegi Fault at the south-southeast and Karadeniz Fault at the north. The obtained data sh...
The Eastern Pontides, which is the under transpressional deformation zone, is an active mountain belt in northern Turkey that has been uplifting at a rate of more than 0.5 mm/year, along with push-up geometry. This uplift is accommodated by the dip/oblique slip normal fault segments of an en-echelon geometry mountain front mapped here for the first...
This corrigendum corrects a cartographic error made in Fig. 1 and an incorrect attribution of credit in the figure caption within ‘Late MIS 3 stabilization of dunes in the eastern Central Great Plains, USA.’ These changes to the Fig. 1 graphic and its caption do not affect the conclusions of the paper.
The Eastern Pontides (EP), which is the under transpressional deformation zone, is an active mountain belt that has been rising rapidly since the Cenozoic era because of the Arabian-Eurasian convergence. Morphometric studies have been performed to investigate the tectonic activity of this region and better understand the characteristics of the faul...
There is no study related to any active faults in the Eastern Pontides which forms the northern block of the North Anatolian Fault System with E-W direction between the Trabzon-Rize. However, our recent studies have shown that the Eastern Pontides, one of the major deformation zones in Turkey, is a tectonic and seismically active mountain range tha...
Karadeniz’in güney sınırını oluşturan Doğu Pontidler, kuzeyde Avrasya güneyde ise Arap platformlarının
sebep olduğu aktif deformasyonlar neticesinde Kuvaterner -Holosen donemi boyunca yılda 0.59-1.00
mm arasında değişen hızlarda kademeli olarak yükselmektedir. Trabzon -Rize illeri ve yakın çevresinde
tarihsel ve aletsel depremler incelediğinde Mw:...
Numerous studies from the 1800’s to the present day in the Eastern Pontides conducted research on
Quaternary marine terraces. According to these studies, the terraces do not contain macro fossils /
fragments as organic material at different elevations in the region. However, the researchers in the
city of Trabzon in 2011, have encountered fossil de...
Dongodien (GaJi4) is a sequence of sub-lacustrine, beach, and sub-aerial lake margin sediments of the Galana Boi Formation at Koobi Fora, Lake Turkana, Kenya. The sediments accumulated under a climate of increasing aridity in the latter African Humid Period. The section contains two archaeologically rich beds (Horizons B and A). Here, we present ne...
The Eastern Pontides has undergone active and progressive uplifting at rates ranging from 0.59–1.00
mm/year during the Quaternary period because of active deformations caused by Eurasia and the
Arabic platforms. A total of 308 earthquakes that were greater than a magnitude of 3 were detected
using catalogues of instrumental and historical earthquak...
Moscone South-Poster Hall Quaternary records of marine terraces formation are indispensable tool for the better understanding sea-level changes in the coastal region of Pontides. Time of the marine terraces with linked to date of the depositional of its are very crucial to know for active tectonic evolution in this study area. The ages of the marin...
Fluvial fill terraces preserve sedimentary archives of landscape responses to climate change, typically over millennial timescales. In the Humahuaca Basin of NW Argentina (Eastern Cordillera, southern Central Andes), our 29 new optically stimulated luminescence ages of late Pleistocene fill terrace sediments demonstrate that the timing of past rive...
In many geological and archaeological studies investigated within a Late Quaternary timeframe, one or more of a suite of different optically stimulated luminescence (OSL) approaches may now be applied to provide critical chronological constraint. Such luminescence applications might be in instances where age exceeds radiocarbon limits or there is a...
Lacustrine, fluvial, and wetland landforms present in the now desertified regions of Dugway Proving Ground (DPG) and the Sevier Desert in western Utah, record a fascinating history of falling lake level, river development, and establishment of wetland habitats in the Lake Bonneville basin between ∼13 and 9 ka. This was not only a time of rapid clim...
Average geologic slip rates along the central Garlock fault, in eastern California, are thought to have been relatively steady at 5–7 mm/yr since at least the Late Pleistocene, yet present-day rates inferred from geodetic velocity fields are indistinguishable from zero. We evaluate the possibility of non-steady slip over millennial timescales using...
Uplifted marine terraces are common landforms in coastal regions where active tectonics are an important component of landscape evolution, such as along the coastal stretches of southern California. The pattern and elevation of shoreline angles on active folds provide information about rates of uplift and fold growth, which is important for definin...
The Neolithic ceramic assemblage from the multi-period coastal settlement at Pool on the island of Sanday, Orkney is unique because it stratigraphically spans both the earlier round-based (including possible Unstan bowls) and later flat-based ('Grooved Ware') traditions. High-temperature thermolu-minescence (HTTL) analysis objectively demonstrates...
This study aims to assess whether luminescence emission from fault gouge samples from the San Andreas Fault Observatory at Depth (SAFOD) can be used to determine the age distribution of distinct deformation microstructures. Such age determination could help constrain some of the proposed micromechanical models for shear localization in fault gouge,...
New constraints on differential vertical motions along the Garlock fault
(GF) in eastern Pilot Knob Valley (PKV) provide insight into the
interactions between the Panamint Valley fault system (PVFS) and the GF.
The nature of strain transfer between orthogonal active fault systems
such as occurs where faults of the Eastern California Shear Zone
appa...
The Holocene was time of dramatic climate change in East Africa, shifting from wetter climate in the Early–Mid Holocene (∼10–5ka) to drier climates in the Late Holocene, followed by a slight reversal at <1ka. The Holocene was a time of cultural change from hunter-gatherer and fishing to pastoralism. Recent excavations along the eastern shores of La...
The intersection of the dextral (2-3 mm/yr) Panamint Valley fault system (PVFS) with the sinistral (5-15 mm/yr) Garlock fault (GF) in eastern Pilot Knob Valley (PKV) controls the active off-fault tectonic deformation in the southern Slate Range (SSR) and northern PKV. We suggest here that the 430+ m uplift of late Cenozoic sediments adjacent to the...
Luminescence dating is a tool frequently used for age determination of Quaternary materials such as archaeological artefacts, volcanic deposits and a variety of sediments from different environmental settings. The present paper gives an overview of the physical basics of luminescence dating, the necessary procedures from sampling to age calculation...
Luminescence dating is a tool frequently used for age determination of Quaternary materials such as archaeological artefacts, volcanic deposits and a variety of sediments from different environmental settings. The present paper gives an overview of the physical basics of luminescence dating, the necessary procedures from sampling to age calculation...
Linking the timing of glacial episodes and behaviour to climatic shifts that are documented in ice and marine sedimentary archives is key to understanding ocean-land interactions. In the NW Scottish Highlands a large number of closely spaced ('hummocky') moraines formed at retreating glacier margins. Independent age control on one palaeo-glacier li...
Intramontane basin sediments are an archive of the interaction between basin bounding faults, and alluvial fan and fluvial systems. The chronologies of intramontane basin sedimentation enable an understanding of the cycling of sediments within a basin through time, can be interrogated to identify periods of alluvial storage and erosion, provide rat...
Holocene aeolian sand sheets at the margins of high-level deflation surfaces in the Scottish Highlands commonly comprise two units: a lower weathered unit representing slow accumulation throughout much or all of the Holocene, and an upper unit of structureless sand that is inferred to represent recent erosion of aeolian deposits and aeolisols from...
Our current understanding of the Quaternary history of the Eastern Alps is largely based on a limited radiocarbon chronology. This lack of chronological data is due principally to the scarcity of suitable material for radiocarbon dating, but also because of the paucity of suitable sites where other methods such as U-series, Ar-Ar or cosmogenic dati...
7 [1] Major earthquakes (M > 8) have repeatedly ruptured 8 the Nazca-South America plate interface of south-central 9 Chile involving meter scale land-level changes. Earthquake 10 recurrence intervals, however, extending beyond scarce 11 historical records are virtually unknown, but would provide 12 crucial data on the tectonic behavior of forearcs...
Alluvial fans are sensitive orders of both climatic change and tectonic activity. The ability to constrain the age of alluvial-fan sequences, individual sedimentary events and the rates of sediment accumulation are key for constraining which mechanisms most control their formation. Recent advances in optically stimulated luminescence (OSL) measurem...
In this paper, simple thermoluminescence (TL) dating procedures utilizing non-diagnostic sherds from fluvial deposits are described. This approach may provide preliminary insights into the chronology of fluvial sequences in areas where transported ceramics are common, but alluvial chronologies are not well developed. Our method deviates from conven...
Ethno-pedology, the systematic definition and classification of indigenous technical knowledge of soil attributes, has often ignored scientific knowledge of soil properties. This paper considers one ethno-pedological class, cesa–goz soils, managed by Kanuri and Shuwa Arab peoples in the Kala–Balge region, northeast Nigeria. Soil micromorphology dem...
We present a comprehensive comparison of optically stimulated luminescence (OSL) ages with cosmogenic radionuclide (CRN) ages, and the first study to validate CRN dates from boulders on moraine ridges using luminescence dates from glaciogenic sediments from associated moraines, accomplished from both direct and stratigraphic relationships between C...
The quebradas of the Eastern Cordillera of NW Argentina contain Late Quaternary sedimentary sequences that reflect repeated alluvial fill and incision events that have created a series of inset terrace surfaces. Variation in climate is considered to be the principle trigger driving episodes of erosion and sediment deposition, even though ongoing te...
The easternmost basins of the central Andean cordillera (22o-25oS) are characterised by multiple Late Quaternary and Holocene alluvial fill-cut terraces. Humid phases in the central Andes, interpreted from cores of Late Pleistocene and Holocene lacustrine deposits, have been previously linked to periods of increased frequency of landsliding events....
Glacial successions in the Anyemaqen and Nianbaoyeze Mountains of northeastern Tibet are reassessed and new glacial chronologies are presented for these regions. Cosmogenic radionuclide and optically stimulated luminescence dating indicates that two glacial advances occurred in marine isotope stage (MIS)-3 and MIS-2. In the Anyemaqen Mountains, a t...
In this study we have investigated the apparent dose distribution in four samples of young sedimentary quartz from different depositional environments, and on standard quartz comprised of artificial binary-dose mixtures. We have used a simplified two-step single-aliquot regenerative-dose (SAR) approach to rapidly measure from a large number of smal...
Moraines along the southwestern slopes of the Qilian Shan were dated using cosmogenic radionuclide (CRN) surface exposure techniques to help define the timing of glaciation in northernmost Tibet. The CRN data show glaciers extending 5 - 10 km beyond their present positions during the global Last Glacial Maximum (LGM) and probably maintained at thei...
This paper presents a case study in the analysis of anthropogenically reset sedimentary materials, through work undertaken to identify and date sediments in an ancient canal in the Mekong Delta, Cambodia. The emergence of rice cultivating communities, utilising canals for both hydraulic management and transport, represents an important stage in the...
Moraine successions along the northern margins of the La Ji Mountains at the northeastern edge of the Tibetan plateau were mapped and dated using cosmogenic radionuclides (CRN). The glacial geologic evidence and the CRN dating show that glaciers existed in this marginal region of Tibet during the latter part of the global Last Glacial Maximum and d...
1] The 1957 Gobi Altay M8.3 earthquake in southern Mongolia was associated with the simultaneous rupture of several faults, including the Gurvan Bulag reverse fault, which is located about 25 km south of the main strike-slip Bogd fault. Our study of paleoseismic excavations across the Gurvan Bulag fault suggests that the penultimate surface rupture...
Glacial landforms and sediments provide evidence for two Late Quaternary major glaciations in the eastern Hindu Kush. New optically stimulated luminescence (OSL) dating was undertaken to define the timing of these glaciations and associated sediment deposition. The Drosh Glacial, was defined by OSL dating to have occurred during marine isotopic sta...
One of the largest historical earthquakes in California occured in 1872 along the Owens Valley fault located along the western margin of the Eastern California Shear Zone. New paleoseismic and optically stimulated luminescence data are the first to bracket the timing of the pre- 1872 rupture to between 3.3 ± 0.3 and 3.8 ± 0.3 ka. These data yield a...
Moraines south of Mount Everest in the Khumbu Himal were dated using optically stimulated luminescence. Clustering of ages and morphostratigraphy allowed three advances to be dated: (1) the Periche Glacial Stage (ca. 18-25 ka), (2) the Chhukung Glacial Stage (ca. 10 ka), and (3) the Lobuche Stage (ca. 1-2 ka). The Periche Stage is coincident with O...
It has been shown in previous studies that residual geological thermoluminescence (TL) signals can be used to assess fire damage and thermal exposure, both of which are of some interest in archaeological contexts. Detailed studies of the removal of TL from pure alkali feldspars have shown systematic relations between measured glow curve parameters...
