Alexander Koptev
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View article: Plume–Lithosphere Interaction and the Role of the Mid‐Lithospheric Discontinuity in Craton Delamination
Plume–Lithosphere Interaction and the Role of the Mid‐Lithospheric Discontinuity in Craton Delamination Open
We present results from thermo‐mechanical numerical modeling of interactions between thermal, thermo‐compositional, and purely compositional (hydrous) mantle plumes, and a rheologically layered lithosphere containing a mid‐lithospheric dis…
View article: Exploring the earliest stage of magmatic break-up through numerical simulations
Exploring the earliest stage of magmatic break-up through numerical simulations Open
In the early stages of continental rifting, a considerable volume of both mafic and felsic magmas can be formed. These magmas originate from the mantle and lower crust respectively, and their composition and volume are related to the local…
View article: Relative role of slab tearing and oblique continental collision in along-strike mountain growth: Insights from 3D thermo-mechanical modeling
Relative role of slab tearing and oblique continental collision in along-strike mountain growth: Insights from 3D thermo-mechanical modeling Open
Slab tearing or the lateral propagation of slab break-off in collisional belts has been suggested to control progressive along-strike mountain uplift and adjacent foreland basin development. However, along-strike differential collision due…
View article: Topography Response to Horizontal Slab Tearing and Oblique Continental Collision: Insights From 3D Thermomechanical Modeling
Topography Response to Horizontal Slab Tearing and Oblique Continental Collision: Insights From 3D Thermomechanical Modeling Open
The horizontal propagation of slab detachment (slab tearing) is known to control lateral migration of the mountain uplift along the collisional belt. However, along‐strike differential collision due to an oblique passive margin geometry ca…
View article: What controls structural variations along the Zagros Collision Zone? Insights from geophysical observations and thermo-mechanical modelling
What controls structural variations along the Zagros Collision Zone? Insights from geophysical observations and thermo-mechanical modelling Open
The Zagros Collision Zone is a complex tectonic region formed as a consequence of the collision between Arabia and Eurasia after the subduction of the Neo-Tethys ocean. The NW-SE striking Zagros orogen consists of the following parallel te…
View article: Iceland plume and its magmatic manifestations: LIP-Dornröschen in the North Atlantic
Iceland plume and its magmatic manifestations: LIP-Dornröschen in the North Atlantic Open
The North Atlantic region is a prime example of the interaction between plate tectonic movements and thermal instabilities in the Earth’s mantle. The opening of the Labrador Sea/Baffin Bay and the North Atlantic, the widespread volca…
View article: TRANSCAUCASUS: Record of 200 My plume activity
TRANSCAUCASUS: Record of 200 My plume activity Open
Transcaucasus - the westernmost part of the southern Caucasus, represents an area where the Tethys Ocean was closed in the Late Cenozoic because of Eurasian and Africa-Arabian plate convergence. The lithosphere of the region represents a c…
View article: 3D thermo-mechanical modelling of oblique continental collision: relative role of slab tearing in along-strike topography evolution
3D thermo-mechanical modelling of oblique continental collision: relative role of slab tearing in along-strike topography evolution Open
It is assumed that slab tearing (or the lateral propagation of slab break-offs) in collisional belts controls the progressive along-strike uplift of mountains and the development of adjacent basins. However, differential continental collis…
View article: Role of Large Igneous Provinces in continental break-up varying from “Shirker” to “Producer”
Role of Large Igneous Provinces in continental break-up varying from “Shirker” to “Producer” Open
Traditionally, the emplacement of the Large Igneous Provinces (LIPs) is considered to have caused continental break-up. However, this does not always seem to be the case, as illustrated by, for example, the Siberian Traps, one of the most …
View article: Comment on egusphere-2023-1388
Comment on egusphere-2023-1388 Open
Abstract. Continental collision is a crucial process in plate tectonics, whereas our understanding regarding the tectonic complexities at such convergent plate boundary remains largely unclear in terms of the evolution and the controlling …
View article: Coupled surface to deep Earth processes: Perspectives from TOPO-EUROPE with an emphasis on climate- and energy-related societal challenges
Coupled surface to deep Earth processes: Perspectives from TOPO-EUROPE with an emphasis on climate- and energy-related societal challenges Open
Understanding the interactions between surface and deep Earth processes is important for research in many diverse scientific areas including climate, environment, energy, georesources and biosphere. The TOPO-EUROPE initiative of the Intern…
View article: Slab tearing in non-collisional settings: Insights from thermo-mechanical modelling of oblique subduction
Slab tearing in non-collisional settings: Insights from thermo-mechanical modelling of oblique subduction Open
The propagation of slab break-off (slab tearing) is usually attributed to laterally variable plate convergence systems with a spatial transition between simultaneous oceanic subduction and continental collision. To study the process of sla…
View article: How did tectonics shape the Zagros Collisional Zone? Insights from data observations and numerical models
How did tectonics shape the Zagros Collisional Zone? Insights from data observations and numerical models Open
The Zagros Mountains were formed in the Late Paleogene by the collision of the northern margin of the Arabian platform with the microplates of central Iran, after the closure of the Neotethys ocean. This fold-and-thrust belt extends in a N…
View article: Hydrous secondary plumes: towards understanding the enigmatic «finger» structures in the intraplate lithospheric mantle
Hydrous secondary plumes: towards understanding the enigmatic «finger» structures in the intraplate lithospheric mantle Open
Many vertical seismic velocity anomalies originate in the transition zone between the upper and lower mantle (410–660 km) and form so-called secondary plumes. These anomalies are interpreted as the result of thermal effects of large-…
View article: Horizontal and vertical slab tearing as different stages of a self-sustaining process developing in a non-collisional setting with oblique subduction
Horizontal and vertical slab tearing as different stages of a self-sustaining process developing in a non-collisional setting with oblique subduction Open
Slab break-off is usually referred to as an early collisional process driven primarily by the slowing of the subduction rate as negatively buoyant oceanic lithosphere detaches from positively buoyant continental lithosphere that is attempt…
View article: Effects of deep lithospheric processes and lateral crustal heterogeneity on the 3D evolution of foreland basins
Effects of deep lithospheric processes and lateral crustal heterogeneity on the 3D evolution of foreland basins Open
Foreland basins develop in front of growing mountain belts due to the flexure of the downgoing plate in response to forces from slab pull and a topographic load. Many foreland basins worldwide show along-strike variable basin subsidence an…
View article: Ocean-continent subduction cannot be initiated without preceding intra-oceanic subduction!
Ocean-continent subduction cannot be initiated without preceding intra-oceanic subduction! Open
The formation of new subduction zones is a key element of plate tectonics and the Wilson cycle, and many different controlling mechanisms have been proposed to initiate subduction. Here, we provide a brief overview of the known scenarios o…
View article: Middle Miocene Climate and Stable Oxygen Isotopes in Europe Based on Numerical Modeling
Middle Miocene Climate and Stable Oxygen Isotopes in Europe Based on Numerical Modeling Open
The Middle Miocene (15.99–11.65 Ma) of Europe witnessed major climatic, environmental, and vegetational change, yet we are lacking detailed reconstructions of Middle Miocene temperature and precipitation patterns over Europe. Here, we use …
View article: Fingerprinting secondary mantle plumes
Fingerprinting secondary mantle plumes Open
Many vertical seismic velocity anomalies observed below different parts of the Eurasian plate are rooted in the transition zone between the upper and lower mantle (410–660 km), forming so-called secondary plumes. These anomalies are interp…
View article: 3D geodynamic-geomorphologic modelling of deformation and exhumation at curved plate boundaries: Implications for the southern Alaskan plate corner
3D geodynamic-geomorphologic modelling of deformation and exhumation at curved plate boundaries: Implications for the southern Alaskan plate corner Open
Plate corners with extreme exhumation rates are important because they offer a perspective for understanding the interactions between tectonics and surface processes. The southern Alaskan margin with its curved convergent plate boundary an…
View article: Influence of Large‐Scale Atmospheric Dynamics on Precipitation Seasonality of the Tibetan Plateau and Central Asia in Cold and Warm Climates During the Late Cenozoic
Influence of Large‐Scale Atmospheric Dynamics on Precipitation Seasonality of the Tibetan Plateau and Central Asia in Cold and Warm Climates During the Late Cenozoic Open
The hydroclimate of the Tibetan Plateau (TP) and Central Asia (CA) plays a crucial role in sustaining surface water reservoirs and thus water resources in the respective regions. In this study, we investigate the changes in Asian hydroclim…
View article: Middle Miocene climate and stable oxygen isotopes in Europe
Middle Miocene climate and stable oxygen isotopes in Europe Open
v1. Three ECHAM5-wiso model experiments for European region. For the first experiment (Europe_PI.nc), boundary conditions are set as pre-industrial and are identical to those in Botsyun et al., 2020. We also conducted two experiments with …
View article: Middle Miocene climate and stable oxygen isotopes in Europe
Middle Miocene climate and stable oxygen isotopes in Europe Open
v1. Three ECHAM5-wiso model experiments for European region. For the first experiment (Europe_PI.nc), boundary conditions are set as pre-industrial and are identical to those in Botsyun et al., 2020. We also conducted two experiments with …
View article: Middle Miocene climate and stable oxygen isotopes in Europe
Middle Miocene climate and stable oxygen isotopes in Europe Open
Three ECHAM5-wiso model experiments for European region. For the first experiment (Europe_PI.nc), boundary conditions are set as pre-industrial and are identical to those in Botsyun et al., 2020. We also conducted two experiments with Midd…
View article: Plate corner subduction and rapid localized exhumation: Insights from<scp>3D</scp>coupled geodynamic and geomorphological modelling
Plate corner subduction and rapid localized exhumation: Insights from<span>3D</span>coupled geodynamic and geomorphological modelling Open
Rapid, localized exhumation has been reported at many plate corners between adjacent subduction/collision segments. Here we use a fully‐coupled geodynamic and geomorphological modelling approach to investigate overriding plate deformation …
View article: Hydroclimate of the Tibetan Plateau and Central Asia during the Late Cenozoic
Hydroclimate of the Tibetan Plateau and Central Asia during the Late Cenozoic Open
These repository data contain netcdf files for each of the four high-resolution (~0.75° per grid cell) general circulation model (GCM) ECHAM-5 experiments with boundary conditions for the mid-Pliocene (~3 Ma; ECHAM5_PLIO_1d_aprl_aprc_q_v_u…
View article: Hydroclimate of the Tibetan Plateau and Central Asia during the Late Cenozoic
Hydroclimate of the Tibetan Plateau and Central Asia during the Late Cenozoic Open
These repository data contain netcdf files for each of the four high-resolution (~0.75° per grid cell) general circulation model (GCM) ECHAM-5 experiments with boundary conditions for the mid-Pliocene (~3 Ma; ECHAM5_PLIO_1d_aprl_aprc_q_v_u…