Abstract The Ninetyeast Ridge is the longest linear intraplate rise in the World Ocean and the main tectonic and magmatic feature in the East Indian Ocean. Ideas about the nature and evolution of this unique aseismic ridge have changed over the more than 50 years of its research as new geological and geophysical data have been obtained. Our analytical review of available publications has shown that

Abstract We present paleomagnetic data acquired on 276 samples from 24 Mesoproterozoic (ca 1132 Ma) postkinematic gabbro–dolerite dykes in the Bunger Hills (Queen Mary Land, East Antarctica). In a stereogram, the mean directions of the high-temperature components of natural remanent magnetization from the dyke samples plot in two antipodal clusters; the reversal test is positive. The primary nature

Abstract 3D structural modeling is an effective technique for the 3D structural analysis of anticlines. The 3D interpretation of structures is most of the matter in the oil development of subsurface reservoirs. In this study, the 3D structural modeling was used for the analysis of Lab-e-Safid and Qale Nar subsurface anticlinal oilfields in the northern Dezful Embayment. The main objectives are determining

Abstract The Seven Devils Mountains are located in the Wallowa-Whitman National Forest in western Idaho. These mountains expose a geologically complex and variably metamorphosed terrane which preserves the Permo-Triassic volcanic arc accreted against the Cordilleran margin. Due to its geologic complexity, the origins of the Seven Devils Mountains and therin correlations between it, the Wrangellia terrane

Abstract Iraq is located in the northeastern part of the Arabian Plate, which is colliding with the Iranian Plate. The collision between the two plates has developed the tectonic framework of the Iraqi territory. Accordingly, two major tectonic divisions are developed: Inner Platform (Stable Shelf) and Outer Platform (Unstable Shelf). The former (Inner platform) is almost stable forming flat terrain

Abstract Generation and interpretation of geomorphometric maps through remote sensing and GIS techniques are significant platforms for the investigations of neotectonics. This investigation presents data from the Nanga Parbat Syntaxix (NPS) and its neighborhood, which is one of the fastest rising portions of the orogen (8‒10 mm per year). Geoscientists and geomorphologists frequently generate huge

Abstract In our overview, we describe the evolution of methods and approaches for medium-scale tectonic mapping of deep ocean areas at scales from 1 : 1 000 000 to 1 : 15 000 000 and smaller, which is a synthesis of data on the structure of the bottom and a theoretical geodynamic model that interprets the genesis of the observed structures. Changes in the content of map legends are shown depending

Abstract In our research we summarized data obtained on the composition, structure, and geochemical characteristics of the granitoid plutons of the eastern part of the Krasnoleninsky arch of the East Siberian Plate and the age of rocks surrounding them. The Kamenny, Palyanovsky, North Kamenny and Vodorazdelny granite, granodiorite, and granosyenite plutons were emplaced in the interval of 297–261 Ma

Abstract Data from a dense seismic network, long-term observations, and modern methods for locating the aftershock hypocenters of the Chuy earthquake in 2003 were used to compile a spatial volumetric seismic portrait of seismically activated faults. The results revealed a cup-shaped structure of the aftershock process with a maximum focal depth of ~20 km at the center of the aftershock region, the

Abstract The urban development in Kuwait is growing rapidly in the past few years. Recently, a large number of new bridges, tall buildings and other infrastructures are constructed in Kuwait. The tallest sculptured tower in the world, the Al-Hmara tower is situated in the Kuwait city. Therefore, predicting ground motion and estimating the seismic hazard in the cities of Kuwait is of utmost importance

Abstract The geometry of the Sefid-Zakhur anticline, a gas reservoir in the Fars province, and the main controlling factors of the structural style in this anticline are studied in this research. The integration of the 2D seismic profiles, well data, and the fieldwork was used to study the geometry variations of the Sefid-Zakhur anticline. The geometry of this anticline is different vertically and

Abstract The tectonic–geodynamic characteristics of the North African–Arabian region are complicated by the interaction of numerous factors. To study this interaction, we primarily used satellite gravimetric data (retracked to the Earth’s surface), which has been acknowledged as a powerful tool for tectonic–geodynamic zoning. The applied polynomial averaging of gravity data indicated the presence of

Abstract Our seismotectonic studies focus on active segments of the junction zone of the Kolyma–Omolon superterrane and the South Anui suture. The aim of our research is to identify features that show activation of suture zones and to determine the parameters of the stress–strain state of the crust in the study area. The analysis was based on the average seismotectonic deformation tensors, which were

Abstract Seismo-magnetic investigation can play an important role in the investigation of various phenomena connected with earthquakes. The main target of this study is to investigate the magnetic variations associated with the swarm seismic activity along the fault structures in Gulf of Aqaba. Instrumental seismicity of Aqaba Gulf and magnetic observations were collected and analyzed during the period

Abstract The Mesopotamian Plain is part of the Mesopotamia which extends for vast area bigger than the plain. The plain is almost flat and vast lowland, which has clearly defined physiographic boundaries with the other surrounding physiographic provinces. The plain is a huge accumulation geomorphologic unit, where the fluvial, lacustrine, and the Aeolian landforms prevail; the fluvial units being the

Abstract Metapelites and metabasites within the Yenisei regional shear zone of the Yenisei Ridge underwent strong deformations with substrate recrystallization and blastomylonite formation during the Ediacaran. The geostructural, petrological, and isotopic–geochronological characteristics of development of the Late Neoproterozoic blastomylonite complexes marking the junction zone of the paleocontinental

Abstract On November 15, 2019, a sequence of small/micro earthquakes struck specific area near an oil production field in the northern part of the State of Kuwait. Generally, the phenomenon of the earthquakes swarming is rarely occurring in Kuwait. More than 56 earthquakes were monitored by the Kuwait National Seismic Network (KNSN) where the magnitudes of the earthquakes ranged between 0.8 and 4.1

Abstract For the first time, a thermomechanical model of a system of multilevel magma chambers above a mantle heat source has been developed to explain the formation mechanisms of intrusive complexes and metamorphic aureoles in Western Sangilen. A model of “thermal blur” at the collision stage and a model of a local magma reservoir at the transtension stage are proposed. The magmatic process was studied

Abstract Poly-deformed late-Proterozoic metamorphic domains covering Um Ashira area at the western segment of Wadi Allaqi shear zone, South Eastern Desert of Egypt, show evidences of inverted Barrovian metamorphism. They exhibit four metamorphic zonal patterns, arranging progressively from chlorite, biotite, garnet, to sillimanite zones. The higher grade metamorphic domains appear at higher structural

Abstract The tectonic activity in the Himalayan region is reflected through major and minor lineaments associated with the major fault and thrust systems. In the present study, we used multi-sensor optical and microwave radar remote sensing images and topographic elevation data for extraction of lineaments. Image enhancement of remote sensing data and relief shading of topographic elevation data were

Abstract Fractures analysis carried out throughout traverses across Kalosh anticline. The anticline is located ~30 km south of Sulaimaniyah city, Kurdistan region, NE Iraq. It extends NW‒SE for ~17 km within the high folded zone of the northwestern segment of the Zagros Foreland Fold Thrust Belt. The aim of this work is for unraveling the tectonic history and detecting tectonic episodes responded for

Abstract The base of the Quaternary was formally redefined in 2009 by the International Commision on Stratigraphy at 2.6 Ma by shifting a 800 ka, formerly part of the Pliocene epoch, into the Pleistocene. It has made tremendous impression in literature. The Quaternary period is unique because of its climatic characteristics; however, it is a geochronological unit, and a redefinition of its position

Abstract Tunisia had been the place of various tectonic episodes which have drawn the actual structural map of the country. The Neogene period was the most active period in which the collision contributed to the mountain ranges formation such as the Atlassic chain. The contrast of mechanical behavior between the different sedimentary units of the cover and the substratum is a determining factor that

Abstract Correlation of ruptures with volcanic activities, and related hydrothermal-magmatic systems are studied. In our research we used a set of methods that included analysis of satellite data, identification lineaments and voxel modeling of crustal fragmentations. The main geological structure that ensures transportation of thermal energy in the hydrothermal-magmatic systems in the northern part

Abstract The results of tectonophysical inversion of the global tectonic stress field are considered from the position of explaining the active forces that cause the lithospheric plate movements. The analysis of regularities of the stress state of the main structural elements of Earth’s lithosphere—ocean spreading, transformations, active continental margins, and intracontinental orogeny—is performed

Abstract Comparative analysis of three randomly chosen salt structures (diapir A, diapir B and diapir C) of the Southern North Sea has been presented through the interpretation and reconstruction of the 2D seismic data set (SNSTI-NL-87 & SNST-NL-83). The study area lies in the Southern North Sea, Dutch offshore and it was tectonically active in the Permian or prior to that, as the basement was faulted

The Central Ural uplift occupies the near-Vodorazdelnaya part of the Urals. It is composed of metaterrigenous and metavolcanogenic Riphean–Vendian formations. Distributed folds, which formed in several stages, and various tectonic faults are widespread. The study of these structures in the areas located in the Northern and Subpolar Urals showed their lateral and temporal variability, which was reflected

Abstract The geological interpretation of the velocity model for the DOBRE-5 deep seismic sounding profile, which runs across Fore-Dobrogea, the northwestern shelf of the Black Sea, and the Crimean Peninsula, resulted in the recognition of several major fault zones. The first zone consists of a system of closely spaced listric normal faults that gently dip S–SE and are interpreted as the structural

Abstract It was showed that reservoir diagenetic and reservoir-forming characteristics are of great value for exploration and exploitation of conventional and unconventional reservoirs. Thus understanding on diagenetic evolution has important significance for successful hydrocarbon exploration. In this paper, a process-based model (PBM) was established to give quantitative characterization of diagenesis

Abstract The first discovery of commercial hydrocarbon in India was in 1889 in a structural trap at Digboi in Assam. Ever since the discovery, geologists have mapped and modeled the subsurface structure of this 50 km long anticlinal fold-thrust belt. However, never before, the existence of a hanging wall syncline north of Jaipur anticline, near the Kusijan oil and gas field, was considered. In this

Abstract This study focuses on physical modeling of interaction between the Indian and Pacific spreading axes, which resulted in separation of the Tasmania and Adélie blocks during the final stage of the Gondwana breakup, with separation of Australia and Antarctica. The Indian branch of seafloor spreading propagated eastward across the Archean–Mesoproterozoic lithosphere of the western part of Australia–Antarctica

Abstract— The geological and sedimentological interpretation of several time and deep seismic profiles within junction zone of the Volga‒Ural area of the East European Platform, Pre-Caspian Depression, Ural Foredeep, Bashkir Anticlinorium, and northern margin of the Scythian Platform allowed us to identify a number of previously unknown structural features of Later Precambrian and Early Paleozoic formation

Abstract The Kharvana‒Zonouz Fault system with general NW‒SE trending right-lateral folds and strike-slip and reverse faults is located in NW Iran. This fault system could be considered as the southeastern continuation of the Nakhichevan‒Sardarapat Fault system in Azerbaijan toward NW Iran. Toward SE, the Kharvana‒Zonouz Fault system reaches to the active Qoshadagh Fault. The major faults in the Kharvana‒Zonouz

Abstract— This work presents the results of a study of metamorphic rocks of the Bekturgan and Balazhezdy groups of the Precambrian Ulutau massif (Central Kazakhstan), which have been traditionally identified with the most ancient Early Precambrian complexes, comprising the massif’s basement. The protoliths of the metamorphic rocks, represented by lavas and tuffs of basalt and rhyolite–trachyrhyolite

Abstract Aswan region is a very important region for Egypt where the High Dam is situated. The wellbeing of the dam and its encompassing region is of extreme worry to all the Egyptian separate networks. Hence, a seismic network was introduced to screen the earthquake action consistently. Several systems of local and sub-regional geodetic networks have been established around the active faults to monitor

Abstract The paper presents the results of the study of objects spatially related to extremely high hydrocarbon (HC) emissions identified in the North Caspian Sea. The analysis of variable geological–geophysical parameters in these objects showed (i) a high correlation with large destruction zones of the crust, (ii) the occurrence in negative forms of the top of the consolidated crust, (iii) elevated

Abstract The most active tectonic areas based on morphotectonic indices is the main aim of this study, are characterized. Mechanical deformation resulting mostly from the Arabia-Eurasia collision is amalgamated by the Alborz Mountains in the form of folding and faulting. The proposed area includes the Alborz province in northern Iran as part of the Alborz mountain range that has seismogenic faults

Abstract— A comprehensive analysis of instrumental data was carried out to establish indicators of the geodynamic conditions of interaction between the Scythian Plate and the collage of southern plates; and to determine the type and kinematics of the Main Caucasian Thrust and the nature of volcanoes in the North Caucasus. In terms of structure and tectonics, the studies were conducted within the alpine

Abstract Kinematic characteristics of mylonite rocks in the footwall of the Chapedony detachment shear zone was investigated to highlight the exhumation style of the Chapedony Metamorphic Core Complex, Central Iran. The mean kinematic vorticity value (Wm) was evaluated applying the rigid grain net technique on the mylonitic rocks of the metamorphic core complex. The results revealed Wm values ranged

The paper presents a comprehensive analysis of new data for drilling and seismic survey of the oil and gas potential of deep-seated Paleozoic horizons of the Caspian Basin in Kazakhstan. The features of the development and occurrence of large Paleozoic uplifts and sedimentary strata promising for prospecting are specified. A set of geological and geophysical methods was applied, and magnetic and gravitational

Abstract In the Dzhetym Range, there are well-known Precambrian massifs of marbled limestones and quartzites, which have no analogues throughout the Middle Tien Shan. The authors establish that the quartzite-carbonate stratum occupies the highest structural position in the series of nappes of the region. The U–Pb dating of detrital zircon and zircon from intrusions reliably proves the Riphean age of

Studies of volcanic rocks in orogenic troughs of Eastern Kazakhstan were carried out. The troughs were formed at late-orogenic stages of evolution of Hercynian Altai collision system. Volcanic rocks are represented by basalts, andesites, dacites and rhyolites. Based on geochemical and isotopic data, the basalts and andesites derived from mafic magmas that formed as a result of partial melting of garnet

Abstract The study area, which is located near the Anatolian, Arabian and African tectonic plate boundaries and surrounded by major tectonic elements such as Dead Sea Fault Zone, Hacıpaşa Fault Zone, Karasu Fault Zone and East Anatolian Fault Zone, has been severely affected from the earthquakes which caused life and property loss during certain periods in historical and instrumental seismology era

Abstract Globally the remote sensing and geomorphometric analysis are frequently used for the assessment of tectonic activity. We used satellite-driven DEM data to analyze regional scale fluvial landform development in the parts of the central section of the Indo-Nepal Himalayan mountain chain, which is attributed the active deformation along the strike of major thrust. This deformation is accompanied

The article substantiates the conclusion about the tectonic nature of the last global transgression of the World Ocean. It is based on the results of marine studies in which complete sections of transgression sediments were obtained that were separated from their substrate by the diachronous boundary of a stratigraphic uncomformity or those beginning with littoral facies. The radiocarbon dating of

Abstract The Baneh- Saqqez zone is part of the Sanandaj‒Sirjan Zone, northwest of Iran. Generally, this zone is recognized as a gold bearing zone, and the mineralization in it is controlled by faults. In this research, structural lineaments were extracted using Landsat 8 (OLI) image, in which the main lineaments trend NE‒SW, EW and NW‒SE. Spatial distributions of the mineralization are examined by

The dunite–wehrlite–clinopyroxenite–gabbro massif in Eastern Chukotka, a key object for geodynamic reconstructions of the Vel’may terrane, which represents one of the segments of the southern border of the Chukotka folded system (Chukotka microcontinent, or Arctic Alaska–Chukotka microplate), is investigated. Mineralogical and petrological–geochemical studies of rocks of this massif are carried out

Abstract Central Tunisia is characterized by major fault systems, being ornamented by salt diapirs of the Late Triassic evaporite-rich interval. Salt movement began in the Late Triassic and continues to the present-day. Lasting halokinesis create pillows, diapirs, salt wall and salt-cored folds, sometimes, with collapse graben above. Salt diapir structures have been mapped and many regions collapsed

AbstractThe present study is carried out to probe geodynamic evolution and tectonic history of A-type granitoids from the Riwasa and Nigana areas in the Tusham Ring Complex (TRC), western Peninsular India on the basis of petrological and geochemical aspects. The investigated rocks have the characteristics of hypersolvus, calc-alkaline, peraluminous and A-type granitoids. They are enriched in SiO2,

AbstractCopper mineralization in Kahang porphyry mining district as a tectonically active region in the center of Iran, at the middle of Urmia–Dokhtar magmatic assemblage (UDMA), has been drastically controlled by structural lineaments. Determination of these footprint features is a good guide to identify the location of ore occurrences. One way to recognize lineaments is to process satellite imagery

AbstractStudy of morphometric parameters such as stream length (Lu) and stream length ratios (Rl), bifurcation ratio (Rb), drainage density (D), form factor (Rf), circularity ratio (Rc), elongation ratio (Re) and asymmetry factor (Af) in the Gola and Kalsa River Basins show a strong structural/tectonic control over the drainage in the study area and also indicate intense tectonic activity in the recent

AbstractThe Siang valley in the eastern part of Arunachal Himalaya contains Paleocene–Eocene sediments of Yinkiong Group along with the Abor volcanic exposed in a wide lateral extent in the middle and lower Siang valleys. Based on available geologic data and detail geologic mapping present study proposes a new evolution model of the basin in the context of India–Asia collision tectonics. Integration

Abstract—Granitoids and dikes of Svyatoy Nos pluton of Cape Svyatoy Nos in the northwestern part of Verkhoyansk-Kolyma folded area, cutting terrigenous and volcanogenic-sedimentary rocks of Upper Jurassic–Lower Cretaceous, are considered. Obtained U‒Pb SIMS geochronological data on zircons from granitoids and dike rocks indicate, that their crystallization ages correspond to Aptian‒Albian (119–111

AbstractThe paper discusses the results of petrogeochemical and geochronological studies of the Tainsky granitoid stock containing the Tainsky gold deposit in the East Sayan. The Tainsky granitoid stock intrudes through ultrabasites of the Ospa-Kitoi ultrabasitic massif. Granitoids are the part of the ophiolite cover which overlap Archean basement rocks of the Tuva-Mongolian microcontinent of the Archean

AbstractThe new administrative capital city area in Egypt, planned to be constructed in the area between Cairo and Suez cities, is vulnerable to moderate and strong earthquakes, which are inevitable in the region. The moderate size recent earthquake with local magnitude 4.2 took place in the vicinity of administrative capital area on 31st of December 2018. The focal mechanism and ground motion characterization

Abstract—Mesozoic‒Cenozoic tectonic zoning and its evolution are characterized by analysis of geological data on the Black Sea–Caucasus–Caspian region. The following tectonic zones were located in succession to the north of the Mesotethys Ocean in the Early Jurassic: the mobile zone on the Hercynian basement; the Moesian–Black Sea–Trans-Caucasus minor plate with the Precambrian–Baikalian basement,

AbstractAn assemblage of mafic granulites (schists), plagiogneisses, and metasedimentary rocks, which is referred to as the Filla Series, is exposed in the Rauer Islands (opposite the eastern coast of the Prydz Bay). The chemistry and Nd isotope composition of the schists, which are interpreted as metavolcanics, are characterized; the results of U–Th–Pb dating (SHRIMP) of zircons from these rocks are

AbstractMajority of the Iraqi Kurdistan Region is a mountainous area with relief differences that attain up to 1000 m, and locally more. The presence of dense net of rivers, streams and large valleys with diverse lithologies have initiated hundreds of mass movements of different types and sizes, active and dormant. In the current study, we have selected different landslides from different parts of

AbstractThe tectonic features of the Baltic–Mezen shear zone that developed along the border of the Fennoscandian Shield and the Russian Plate in the north of the East European Platform are considered. It is established that tectonic evolution of the considered zone was associated with strike-slip displacements in the basement rocks, which occurred and were dispersed in cover deposits in the form of

Abstract—The article provides geological data on the morphostructural differentiation of sedimentary basins and the results of tectonophysical and digital modeling reflecting the shape and possible mechanisms of this process. It is shown that morphostructural differentiation is the fundamental property of sedimentary basins, associated with interaction of rock masses in the basement–sedimentary cover