Giorgi Boichenko

• PhD Student
• Main specialist at Ilia State University

The paper presents a petrochemical characteristics of plutons of different ages located in different zones and subzones of the Greater Caucasus Svaneti segment. In particular, petrochemical analysis of Svaneti segment of the Greater Caucasus showed that major magmatic phases of plutons are represented by different petrotype. Petrochemical studies s...

On the Middle Jurassic Chaukhi Gabbro-Diabase-Pillow lava massif

On the Geoheritage of Georgia

The Eastern Caucasus Mountains in Georgia include products from extensive Miocene volcanic activity that are being unraveled by geological mapping supported by geochronology and geochemistry. This article presents new zircon U-Pb geochronology and whole rock geochemistry of the volcanic ash layers of the intermountain Neogene basin of the Eastern C...

Instrumental seismic monitoring has a long history in the Caucasus and started in 1899 when the first seismograph was installed in Tbilisi, Georgia. Much of the analog paper records from this time period are preserved in the Tbilisi archives because Georgia served as the regional data center. In the 1990s, due to the collapse of the Soviet Union an...

This article presents new zircon U-Pb geochronology and whole rock geochemistry of the volcanic ash layers of the intermountain Neogene basin of the Eastern Caucasus. Our investigation in the region demonstrates that these ash layers, whose eruption source(s) have not been identified previously, have age and geochemical characteristics of the Kura...

Earth's globally significant geological heritage is recognized by UNESCO as a scientific, educational, environmental protection and economical areas. We believe that we have found one such site in the sedimentary cover of the Khrami massif. This pre-Jurassic crystalline massif (~500 km 2) is located in Georgia, within the Lesser Caucasus orogenic b...

From the Late Cretaceous to the Eocene, the Adjara-Trialeti fold-thrust belt with a length of more than 350 km is clearly expressed from the east of Tbilisi to the west to the Black Sea. It was interpreted as a back-arc rift that formed in the north of the Mesozoic island arc of the Lesser Caucasus (Gamkrelidze, 1974). Timing of the Adjara-Trialeti...

In NE Türkiye, an almost 30,000 km 2 area is covered by young volcanic rocks, ranging in age from Miocene to Quaternary and spanning the whole compositional spectrum from basanites/tephrites to high silica rhyolites. The region exhibits a plateau morphology, known as the Erzurum-Kars Plateau, at~2 km above sea level. That volcanic plateau continues...

• Aspiring geoparks

In Georgia, there is an additional advantage that the areas of high geoheritage value also coexist with areas of significant cultural importance and heritage. The medieval rocks-cut city of Vardzia is an excellent example of geoheritage supporting cultural heritage. It is located in Samtskhe-Javakheti volcanic highland (1300-2800 m a.s.l.).

The first part of the book discusses the energy potential of thorium and future prospects. Many researchers believe that thorium is the nuclear energy source that, without CO2 emissions, can fill the energy shortfall caused by the depletion of hydrocarbons in the future. Therefore almost all developed countries in the world are currently working on...

The first part of the book discusses the energy potential of thorium and future prospects. Many researchers believe that thorium is the nuclear energy source that, without CO2 emissions, can fill the energy shortfall caused by the depletion of hydrocarbons in the future. Therefore almost all developed countries in the world are currently working on...

Fault characterization is a critical step toward improving seismic hazard assessment in the Georgian Greater Caucasus but is largely absent from the region. Here, a paleoseismic trench near the capital city of Tbilisi revealed evidence for recurring surface rupture on a shallowly north-dipping thrust fault. The fault has broken through the overturn...

In Georgia the Paleogene Adjara-Trialeti riftogenic belt (length 350 km, width 50-2 km) is dominantly composed of trachytic and trachytic-andesitic pyroclastic deposits, though plutonic rocks also play an important role in the structure. In this article, we report new data on the (LA-ICP-MS) U-Pb zircon geochronology and petrochemistry of the pluto...

In this paper, we propose a structural analysis of an active Bitsmendi fold using 2D seismic reflection profiles. The Bitsmendi anticline is located along the frontal part of western Kura foreland fold-and-thrust belt. Our analysis uses subsurface structural geologic techniques to interpret the combination of seismic reflection profiles under the t...

Upper Miocene Megavolcano in the Lesser Caucasus, Georgia-Turkish Border: Geological and Isotope evidences

The Caucasus has a documented history of cataloging earthquakes stretching back to the beginning of the Christian era. Instrumental seismic observation in the Caucasus began in 1899, when the first seismograph was installed in Tbilisi, Georgia. During the Soviet era (1921–1991 in Georgia), the number of seismic stations increased in the region, pro...

Goldschmidt Abstract 2020 DOI: 10.46427/gold2020.1986 Upper Miocene Megavolcano in the Lesser Caucasus, Georgia-Turkish Border: Geological and Isotope evidences A. OKROSTSVARIDZE1*, I. GAMKRELIDZE2, G. BOICHENKO1, I. SKHIRTLADZE1 1 Institute of Earth Sciences, Ilia state University, Tbilisi 0162, Georgia (*correspondence: okrostsvari@gmail.com)...

The general overview of geology of the territory of Georgia as a component of Caucasian segment of the Mediterranean (Alpine-Himalayan) collisional orogenic belt is presented. Georgia is built up of Neoproterozoic-Paleozoic metamorphic complexes of supra-subduction zones, Mesozoic-Cenozoic sedimentary, submarine and subaerial volcanic rocks and int...

The geochemistry of the volcanic ash layers and the U-Pb geochronology of zircons in the Neogene intermontane basin of the Eastern Caucasus (Skhirtladze, 1964) has been studied. Investigation of the zircon U-Pb geochronology showed that the ash layers of the intermontane neogene basin of the Eastern Caucasus were deposited ~7.5 million years ago, i...

Zircons of the major ore-bearing plutons (Merisi, Namonastrali, Vakijvari, Zoti, Okros-Ghele and Rkviana) of the Adjara-Trialeti Paleogene folded zone of the Lesser Caucasus were dated by the U-Pb method using the Laser Ablation ICP-MS tool at the isotope laboratory of the Department of Earth Sciences at the National Taiwan University. The results...

From the Late Cretaceous to the Eocene, the Adjara-Trialeti fold-thrust belt with a length of more than 350 km is clearly expressed from the east of Tbilisi to the west to the Black Sea. It was interpreted as a back-arc rift that formed in the north of the Mesozoic island arc of the Lesser Caucasus (Gamkrelidze, 1974). Timing of the Adjara-Trialeti...

The Caucasus defines the northern margin of the Arabia-Eurasia collision zone between the Black and Caspian Seas, within the Alpine Himalayan collision. Most orogen perpendicular convergence within this sector of the Arabia-Eurasia collision is absorbed within the Greater Caucasus, as indicated by seismicity, GPS velocity gradients and Neotectonic...

The eastern part of the Caucasus orogen, termed the Georgian segment, is mainly underlain by highly deformed Lower-Middle Jurassic shales, sandstones, and volcaniclastic rocks, and cut by numerous intrusive bodies of various compositions. All units contain a variety of mineral deposit types and their surrounding zones of hydrothermal alteration. De...