Avraam Zelilidis

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Verified

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• PhD in Geology
• Professor (Full) at University of Patras

This research involves the integrated sedimentological and paleontological analysis of the Neogene tidal deposits in the eastern parts of the Hellenic Fold and Thrust Belt, in South Kefalonia (Paliolinos-Avithos coast) and in NW Corfu (Arillas coast) islands. The study of tidal is supported by illustrative outcrop photographs, with a particular emp...

This study investigates the depositional environments and soft sediment deformation within the Early Jurassic Ammonitico Rosso Formation in the External Ionian Basin (Western Greece), focusing on its biostratigraphy, sedimentology, and tectonic activity. This research provides new insights into the depositional environment of the Ammonitico Rosso F...

The studied areas (the Ionian Islands: Paxoi, Lefkas, Kefalonia, and Zakynthos), are situated at the western ends of the Ionian Basin in contact with the Apulian Platform and named as Apulian Platform Margins. The proposed model is based on fieldwork, previously published data, and balanced geologic cross-sections. Late Jurassic to Early Eocene NNW...

Pelotherapy has been used as a treatment of different diseases from medical, pharmaceutical and cosmetics fields. Mineralogi-cal and chemical compositions and the possible toxicity of peloids were first investigated and then compared with the existing toxicity levels in order to determine whether they have applications for pelotherapeutic treatment...

Abstract: This research involves the integrated sedimentological and paleontological analysis of the Neogene tidal deposits in the eastern parts of the Hellenic Fold and Thrust Belt, in South Kefalonia (Paliolinos-Avithos coast) and in NW Corfu (Arillas coast) islands. The study of tidal is supported by illustrative outcrop photographs, with a part...

Sedimentary rocks represent a vital component of the Earth’s geological framework, playing a significant role in the Earth’s surface morphology, as well as in paleoenvironmental reconstructions [...]

The studied area (the Ionian Islands: Paxoi, Lefkas, Kefalonia and Zakynthos), is situated in the western ends of Ionian Basin (IB) in contact with the Apulian Platform (AP) and named as Apulian Platform Margins (APM). The proposed model is based on fieldwork, previously published data and balanced geologic cross-sections. Late Jurassic characteriz...

Pelotherapy has been used as a treatment of different diseases from medical, pharmaceutical and cosmetics fields. Mineralogi-cal and chemical compositions and the possible toxicity of peloids were first investigated and then compared with the existing toxicity levels in order to determine whether they have applications for pelotherapeutic treatment...

Fossils play a crucial role in geoparks contributing to their scientific, educational and recreational aspects. The purpose of the project “Study and promotion of the palaeontological heritage of Kefalonia–Ithaca UNESCO Global Geopark” is the overall consideration of the palaeontological record of the geopark and its utilization with a holistic app...

This study delves into the sedimentation mechanisms governing mud deposits in shallow marine and tidal environments, with a particular focus on elucidating the versatile therapeutic applications of these muds. This research provides valuable insights for optimizing the selection of mud as a cosmetic resource that can positively influence human heal...

This study provides a sedimentological, stratigraphic, and paleocurrent investigation of Upper Eocene to Lower Oligocene deep-sea fan deposits found in the central part of the Pindos foreland basin in western Greece. According to facies analysis, the examined succession at Amfilochia area has thirteen sedimentary facies and ten facies and sub-facie...

In western Greece is the Pindos Foreland Basin, a geological depression that contains approximately 2500 m of mainly Upper Eocene to Lower Oligocene submarine fans deposits. Despite the extensive stratigraphic and structural research that has defined the basin as a foreland basin that developed adjacent to Pindos Orogen, the impact of orogenic hist...

The evolution of the Apulian Platform Margins during the rift stage

The presentation focuses on the Mediterraean ridge evolution and the expected stratigraphy.

As Lower Cretaceous “Vigla” shales have been suggested as one of the main source rocks for the Ionian Basin in Greece, a geochemical analysis was performed for “Vigla” shales in Kastos Island and the Araxos peninsula, far from the already studied areas. Results, based on Rock-Eval VI analysis, sample fractionation, and biomarkers analysis, showed t...

The geological condition of two well-known Mycenaean cemeteries at Mazarakata and Lakithra and one less known cemetery at Metaxata, all located east of Argostoli town, were studied. During the Mycenaean civilization, three millennia earlier, the properties of the rocks were well-known to local residents. In these rocks, they have carved the famous...

The new approach on depositional conditions of the Messinian evaporites in Zakynthos Island indicates that the evaporites in the Kalamaki and Ag. Sostis areas were redeposited during the Early Pliocene. They accumulated either as turbiditic evaporites or as slumped blocks, as a response to Kalamaki thrust activity. Thrust activity developed a narro...

The studied section, up to 10 m thick with 17 different carbonate beds, showed the interaction between a giant slide and the pre-existing normal faults during the upper Cretaceous time. There are three major points of consideration in the studied section: (1). The presence of two slump horizons, up to 1 m thick each, within the stratigraphic column...

This study integrates provenance and statistical data, along with published sedimentological results, applied on the Lower Oligocene submarine‐fan deposits in Pindos foreland basin. Twelve outcrops were analysed using conglomerate clast composition, petrographic and statistical analysis and this integration suggests that the studied deposits were s...

Kefalonia Island is situated in western Greece and geologically corresponds to the Apulian Platform Margins (APM), with the Apulian Platform lying to the west and the Ionian Basin to the east. The studied deposits, with a thickness up to 164.5, extend along the 650 m long Agia Efmia bay, ranging from the Middle Paleocene (Selandian) to the uppermos...

The paper deals with resedimented Messinian evaporites as turbiditic deposits

The Mesozoic-Paleogene Ionian basin is part of the external Hellenides orogen, bounded westwards by the Ionian Thrust and eastwards by the Gavrovo Thrust. From Triassic to upper Jurassic the basin was characterized by a pre-rift stage; whereas from upper Jurassic to early Eocene by a rift stage. During the rift-stage, the basin was subdivided into...

Technological advances (including modelling and 3D mapping) in geophysical research have been the driving force for hydrocarbon exploration in tectonically complicated settings, such as the eastern Mediterranean. The petroleum industry has paid more attention to the eastern sector of the Mediterranean Sea because of recent discoveries of significan...

Technological advances (including modelling and 3D mapping) in geophysical research have been the driving force for hydrocarbon exploration in tectonically complicated settings, such as the eastern Mediterranean. The petroleum industry has paid more attention to the eastern sector of the Mediterranean Sea because of recent discoveries of significan...

Pindos foreland basin in western Greece is a tectonic depression that lodges about 2500 meters of Upper Eocene to Lower Oligocene sub-marine fan deposits. The stratigraphic analysis documents an upward transition from abyssal plain to outer and eventually to inner fan deposits suggesting progradation of the submarine fan system and progressive infi...

This study provides a sedimentological, stratigraphic, and paleocurrent investigation of Upper Eocene to Lower Oligocene deep-sea fan deposits found in the central part of the Pindos foreland basin in western Greece. According to facies analysis, the examined succession has thirteen sedimentary facies and ten facies and sub-facies associations. Dep...

This study integrates provenance and statistical data, along with published sedimentological results, applied on the Upper Eocene-Lower Oligocene submarine fan deposits in Pindos foreland basin. Twelve (12) outcrops were described and interpreted using facies analysis, conglomerate clast composition analysis, petrographic analysis, and statistical...

Kefalonia Island is situated in western Greece and geologically corresponds to the Apulian Platform Margins (APM), with the Apulian platform lying to the west and the Ionian Basin to the east. The studied deposits, with a thickness up to 164.5, extend along the 650m long Agia Efimia bay, ranging from the middle Paleocene (Selandian) to the uppermos...

The definition of pre-Messinian source rocks in the eastern Mediterranean is of paramount importance for hydrocarbon exploration because of the ability of salt to act as a high-quality seal rock. This research evaluates the organic geochemical features of the Upper Miocene (Tortonian—Messinian) sedimentary succession onshore Crete Island, Greece. T...

The Acheulean site of Radafnidia

The Acheulean site of Radafnidia

The late Eocene-early Oligocene paleoenviromental and paleoclimatic conditions in the southern Hellenic Thrace Basin (Lemnos Island, Northeast Aegean Sea) have been determined, based on planktonic and benthic forami niferal analyses. One hundred thirtynine mudstone samples were collected from representative outcrops that cover the entire stratigrap...

Field investigation, Microfacies analysis, and biostratigraphy have been carried out in the central parts of the Ionian Basin (Aetoloakarnania area, Western Greece) in order to decipher the depositional environments that developed during the accumulation of the Upper Cretaceous to Eocene carbonate succession. Three different Standard Microfacies ty...

The studied area is situated in northwestern Greece and corresponds to the northern end of the Pre-Apulian Zone, in contact with the Apulian platform to the west and the Ionian Basin to the east. The proposed model is based on fieldwork, measured deformation structures, and age determination of the studied deposits. Until now, the known Pre-Apulian...

The assessment of the geosites of Chelmos-Vouraikos UNESCO Global Geopark (UGGp) was carried out based on an established methodology for the evaluation of geoparks’ geosites. Such assessments should be used for sustainable development and geoconservation in geoparks. The selected methodology is based on a wider range of criteria concerning the over...

From the many post-Oligocene basins in Greece that contain vertebrate fossils, we focus on three major basins with their accompanied minor ones, which present synthetic and complicated processes of geotectonic and stratigraphic evolution. These are the Mesohellenic (MHB) with Ptolemais (PTB), Axios-Thermaikos (ATB) with Mygdonia (MB), and Strymonik...

The sedimentary basins of Greece contain an important record of fossil vertebrates that has been known and studied for nearly two centuries. Here, we present our collective effort to review and summarize this fossil record. A combination of our original research and previously published records permits the complete reassessment of the identified ve...

From the many post-Oligocene basins in Greece that contain vertebrate fossils, we focus on three major basins with their accompanied minor ones, which present synthetic and complicated processes of geotectonic and stratigraphic evolution. These are the Mesohellenic (MHB) with Ptolemais (PTB), Axios-Thermaikos (ATB) with Mygdonia (MB), and Strymonik...

Evolutionary stages, from late Eocene to Miocene, of Pindos foreland, mark the transition from Pindos oceanic basin, in the east, to Gavrovo carbonate platform sedimentation in the west. Pindos Thrust as a crustal-scale structural element resulted in the formation of the Pindos foreland. Current research, which is based on detailed field campaign a...

Siliceous concretions (nodules), from two different geological settings—the Apulian platform margins in Kefalonia island, and the Ionian Basin in Ithaca, Atokos, and Kastos islands—have been studied both in the field and in the laboratory. Nodule cuttings are mainly characterized by the development of a core, around which a ring (rim) has been form...

Chert concretions in thick limestone successions preserve a more complete paragenetic sequence of diagenetic minerals than their host limestone and interbedded shale. The goal of this study was to test the possible presence of a high-temperature mineralising system in the Ionian basin of western Greece. Upper Cretaceous chert nodules were sampled a...

In order to decipher the paleo-depositional environments, during the Late Jurassic to Early Eocene syn-rift stage, at the margins of the Ionian basin, two different areas with exposed long sequences have been selected, Kastos Island (external margin) and Araxos peninsula (internal margin), and were examined by means of microfacies analysis and bios...

The nature of syn-sedimentary deformation structures is related with two different kinematic processes, seismites and gravity flows. These structures are formed just a er initial sediment consolidation, when the deposits are weakest and pore fluid can be most easily and rapidly expelled. The detailed study of deformation structures is an important...

The sedimentary basins of Greece contain an important record of fossil vertebrates that has been known and studied for nearly two centuries. Here, we present our collective effort to review and summarize this fossil record. A combination of our original research and previously published records permits the complete reassessment of the identified ve...

This study investigates the oxygen and carbon (δ18O, δ13C) stable isotope ratios, as well as the organic geochemical features of the 146-m-thick composite Kalamaki section located in the southwest margin of the Hellenic Fold and Thrust Belt (Zakynthos Island). The section includes Late Miocene–Pliocene pre-evaporitic, evaporitic, and post-evaporiti...

The Pindos foreland basin is an elongated, NW-SE trended and parallel to the Pindos Orogen depocenter that is bounded to the east by the Pindos thrust and to the west by the Ionian thrust. Further, other internal thrusts, such as Gavrovo, internal and middle Ionian thrusts complicate the basin development. The Upper Eocene-Lower Oligocene sedimenta...

The Eocene-Oligocene transition is a very important time interval due to the environmental and climate changes that are observed. This transition characterized by a dramatic worldwide fall of surface temperature while low oxygen conditions were identified. These low oxygen conditions probably related to the stratifica tion of severe water mass whic...

This research presents a sedimentological, stratigraphic and paleocurrent analysis of the Upper Eocene to Lower Oligocene submarine fan deposits that occur in the central part of Pindos foreland basin, western Greece. Facies analysis suggests that the studied succession includes thirteen sedimentary facies and ten facies and sub-facies associations...

Based on macroremains, we describe three fossil plant assemblages from the Miocene of the Messara Basin (southern Crete) and the adjacent Gavdos Island. The palaeoflora of Kassanoi, which is the oldest (Messara Basin, Viannos Fm, Serravallian/early Tortonian), is documented mainly by leaf imprints, including a fern, a conifer (Tetraclinis cf. salic...

This research presents a sedimentological, stratigraphic and paleocurrent analysis of the Upper Eocene to Lower Oligocene submarine fan deposits that are outcropped in Pindos foreland basin, western Greece. Facies analysis suggests that the studied succession includes thirteen sedimentary facies and ten facies and sub-facies associations. The envir...

The Pindos Foreland Basin (PFB) Upper Eocene-Lower Oligocene basin-fill is represented by submarine fan deposits. Although these deposits are thought as being accumulated in a foreland basin, geochemical data about the provenance and tectonic setting are not available. This study bridges this gap presenting data from geochemical analyses, adding ad...

Soft-sediment deformation (SSD) structures are widespread within the Lower Cretaceous Vigla Formation (limestones and shales) that are exposed in a 7–10 km long and 100 m high section along the east coast of Kastos Island in the Ionian Sea. SSD was observed both in limestones and in shales, and formed during or immediately after deposition, during...

As major components of natural ecosystems, plants interact with the biotic and abiotic environment developing a spectrum of different responses at various biological levels. Such biotic interactions are detectible in the plant fossil record and provide an outline of ecological functions during the past. The recently described Late Miocene plant ass...

Sedimentological studies of the Cretaceous limestones in the central Ionian basin (Amfilochia, Arta as well as Kerasonas areas) indicate that these deposits are composed of calciturbidites interbedded with breccia-microbreccia deposits. In the Amfilochia new cross-section, with a NNW-SSE direction, the lower Cretaceous Vigla limestones and Vigla sh...

Calcareous nannofossils are very good biostratigraphic indicators and abundant in deepsea sediments. The deep-sea fan sediments in the Pindos Foreland Basin, western Greece provide an opportunity to determine the Eocene-Oligocene transition and evaluate potential fingerprints of this climatic change at low latitude settings. The basin is bordered t...

This outcrop-based study presents a sedimentological, stratigraphic and paleocurrent analysis of the Upper Eocene to Lower Oligocene submarine fan deposits in Pindos Foreland basin, western Greece. Biostratigraphic analysis of calcareous nannofossils confirms the late Eocene to late Oligocene time interval. The studied deposits are approximately 5...

Introduction-Geological setting Upper Cretaceous-Lower Eocene deposits of the Ionian basin are the major target in hydrocarbon exploration as they represent the reservoir rocks. These deposits mostly are composed of calciturbidites interbedded with breccia-microbreccia deposits. According to Bourli et al., 2019 the studied outcrops from Araxos area...

Introduction-Geological setting The field observations of the Lower Cretaceous "Vigla formation" in NW Peloponnesus (Gianniskari beach) and according to Bourli et al., (2019), indicate a fault-controlled formation that was accumulated into restricted basins. These basins were formed from normal faults with NNW-SSE direction and were influenced from...

Introduction According to Bourli et al., (2019) upper Cretaceous-Lower Eocene deposits of the Ionian basin is the major target in hydrocarbon exploration as they represent the expected reservoir rocks. These deposits are mostly composed of calciturbidites interbedded with breccia-microbreccia deposits. Calciturbidites can be of great economic impor...

Siliceous (chert) concretions are a prominent component of Cretaceous limestones in the Ionian zone of western Greece. This study investigates the diagenetic evolution of such cherts from two localities: largely undeformed strata on Kastos Island and highly faulted strata at Araxos. In both areas, lower Cretaceous limestones contain abundant small...

The northwestern margin of the Hellenic Fold and Thrust Belt situated along the southern edge of the Dinarides – Albanides - Hellenides continental convergent zone has been studied in terms of its hydrocarbon generating potential. More than a hundred (100) samples of the Upper Miocene-Lower Pliocene sedimentary rocks from several sites in Corfu Isl...

Sedimentological studies of the Upper Cretaceous–lower Eocene limestones in the western part of the Ionian basin (Araxos area) indicate that these deposits are composed of calciturbidites interbedded with breccia-microbreccia. Breccia - microbreccia deposits are structureless, display channelized geometry with calciturbiditic blocks internally to t...

Tertiary sediments in Metsovo area consist of submarine fan turbidite deposits accumulated in the proximal part of the basin and represent mostly inner fan. The most proximal part of the inner fan could be related to a shelf environment. Palaeocurrent data indicate mainly two directions. The main direction is SW and results mainly from groove marks...

In order to estimate the palaeoflow direction of the submarine fans, deposited in the Internal Ionian subbasin of the Pindos Foreland, fifty-one positions along the sub-basin were selected and measurements of palaeocurrents indicators such as flute and groove marks were taken. In the studied area the main palaeoflow direction of turbidites was axia...

Final closure of the Pindos ocean, resulted in collision of Apulia with Pelagonian microplates, produced voluminous clastic sediments that flowed southwards as turbidity currents in the form of submarine fans, giving rise to Pindos flysch during early Tertiary. Samples coming from thinbedded sandstones were collected from five cross-sections throug...

The Triassic is considered a crucial interval because during that time huge areas in our planet suffered an intense, long lasting, period of aridity, which favored the formation of worldwide evaporitic bodies. During the Triassic, great volumes of evaporites were formed in the Ionian basin (Western Greece). On the surface chaotically textured gypsu...

A different basin evolution is suggested between the northern and southern parts of the Pindos basin, based on biostratigraphic dating results. Characteristic nannofossils showed that flysch sedimentation in the whole basin started in the Paleocene and generally finished during the Eocene, with the exception of the Konitsa and Milia areas where sed...

Pindos foreland is a tertiary turbiditic basin fill trending parallel to the external Hellenides (Aubouin, 1959). The basin is bounded to the east by the Pindos thrust and to the west by the Ionian thrust. Apart of these two major thrusts, minor thrusts separate the basin into linear narrow sub-basins, trending also parallel to the basin axis. For...

The study area is part of the Pindos foreland (Underhill, 1985). Pindos foreland is a tertiary turbiditic foreland basin fill trending parallel to the external Hellenides and occupies Gavrovo and Ionian isopic zones (Aubouin, 1959). The age of Pindos foreland sediments is still a matter of discussion. B.P. (1971) proposed an early Miocene to middle...

The submarine fan deposits in Lemnos Island, of the NE Greece provide a perfect opportunity to investigate the influence of processes such as erosion and bed amalgamation in the alternation of the shape of a power-law cumulative frequency distribution. The bed thickness distribution in two outcrops of late Eocene to early Oligocene turbidite deposi...

Facies analysis of Cretaceous carbonate sequences from the external and central Ionian zone revealed a homoclinal ramp model of evolution. During Berriasian to Valanginian, the carbonate ramp was differentiated to an inner-mid and outer ramp environment, which corresponded to the external and central Ionian zone, respectively, while the main inner...

Drill core analysis showed 41 sedimentary cycles in the sedimentary association of the Neogene to Quaternary Fiorina Basin, with a total thickness up to 560m. The lower part is the Base formation with an up to 297m thick, whereas middle part, Vevi formation is up to 127m thick and the upper part which corresponds to Lophon formation is up to 124m t...

A simple application of bed thickness distributions was attempted in outcrops of Late Eocene-Oligocene turbidites in three dispersed localities of Greece. The three studied sections are located at Evinohori area (West Greece), Karpathos Island (SE Greece) and Limnos Island (NE Greece). All outcrops show similar sedimentological characteristics. Thr...

A physical outcrop, of 100m length and 110 m total thickness studied in combination with sedimentological analysis in detail (stratigraphie sequence, grain size, sedimentological structures) led us to determine the sedimentological environments and the particular subenvironments of each part of the partial stratigraphie sequence which is a proximal...

The time interval of the sedimentation in the southern Hellenic Thrace Basin (Lemnos Island, northeast Aegean Sea) was studied, based on the qualitative analysis of calcareous nannoplankton and quantitative analysis of planktonic foraminifera. The samples were collected from 4 different stratigraphic sections (Ifestia, Panagia, Kaspaka, and Kaminia...

Fifty-one mudstone samples were collected from the Miocene successions in Lefkas and Cephalonia Islands in Western Greece and were studied in terms of their organic geochemical features using Rock-Eval 6 pyrolysis. The obtained data were further analyzed with the application of advanced statistical methods, such as factor analysis and hierarchical...

This investigation presents an outcrop-based integrated study of internal division analysis and statistical treatment of turbidite bed thickness applied to a Carboniferous deep-water channel-levee complex in the Myall Trough, southeast Australia. Turbidite beds of the studied succession are characterized by a range of sedimentary structures grouped...

Trace fossils and ichnofabrics were studied in their sedimentological context within the stratigraphic sections and from fallen slabs collected from talus material. To capture a representative selection of available ichnotaxa, a preliminary determination of ichnotaxa in the field helped to document each kind of trace fossil by means of high-resolut...

The Hellenic part of the Fold and Thrust Belt (FTB) in the Balkan Peninsula has been explored regarding its hydrocarbon potential since it exhibits, in broad terms, similar geological history to the prolific oil and gas provinces in Albania and Italy. Regional analysis indicates a MidMesozoic and a Tertiary hydrocarbon system. Exploration opportuni...

This research presents a comprehensive approach on the hydrocarbon generation potential applied for the first time on the Lower Permian Mount Agony Formation that is exposed in the southern Sydney Basin, southeast Australia. Thirty mudstone samples were collected and analyzed using different organic geochemical methods such as, Rock-Eval VI-TOC, bi...

The sections which are closer to the Pindos thrust are characterized by high abundance, low diversity and low oxygenation levels, in contrast to the distal areas from Pindos thrust which are characterized by low abundance, high diversity and high oxygenation level. The ichnodiversity and ichnoabundance decrease gradually upward, reflecting the impa...

This research evaluates the organic geochemical characteristics of a Carboniferous mud-rich sedimentary succession (Yagon Siltstone) that outcrops in the Myall Trough, a generally regarded fore-arc basin from southeast Australia. Twenty-eight mudstone (28) samples were tested by using standard organic geochemistry methods (Rock-Eval VI-TOC, bitumen...

This investigation presents an outcrop-based integrated study of sedimentological analysis and sequence stratigraphy applied to the Lower Permian sedimentary succession in the southern Sydney Basin, Australia. This succession accumulated in several depositional environments and sub-environments that range from non-marine (fluvial) to marine (outer...

A total of 80 samples of the Miocene deposits in Agios Georgios Pagon (NW Corfu) were selected and studied in regard of their geochemical and sedimentological characteristics. Organic content and calcium carbonate measurements were used and combined to investigate the depositional conditions and preliminary source rock potential. TOC analysis prese...

Sedimetological analysis of submarine fan deposits, both north and south of Evinos River, east of Mesolongi town, showed that there are different sedimentological conditions. The southern part outcropped between Klokova and Varasova Mountains, influenced by Gavrovo thrust activity, is characterized by coarse grained inner fan deposits, and sourced...