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Introduction
Fedor L. Yakovlev currently works at the Institute of Physics of the Earth, Russian Academy of Sciences. Fedor does research in Structural geology,Tectonophysics, Geotectonics, Geodynamics and Geology. Their current project is 'Study of mechanisms of formation of a linear folding, of neotectonics and geodynamics of Greater Caucasus'.
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April 2017 - present
March 2012 - April 2017
Publications
Publications (98)
The neotectonic stage of development of the Southeastern Caucasus in the area of the Shahdag massif is analyzed. Previously, the 8 peneplain surfaces were detected here; the age of the first (upper) surface was dated to the Early Sarmatian, 12 Ma. The revision of the main parameters of the neotectonic stage was based on new data on the elevation ra...
The neotectonic stage of development of the Southeastern Caucasus in the area of the Shahdag massif is analyzed. Previously, the 8 peneplain surfaces were detected here; the age of the first (upper) surface was dated to the Early Sarmatian, 12 Ma. The revision of the main parameters of the neotectonic stage was based on new data on the elevation ra...
The possibilities of using the AGISOFT METASHAPE program in field structural geology are discussed. In the field, multiple photographs of the object of interest are taken from different points. Then, in deskwork conditions, using the specified program, the geologist quickly builds the volumetric surface of this object. As a part of a technological...
Within the Southeastern Caucasus, south of the Shalbuzdag mount, within the Tfan tectonic zone, just south of the Main Caucasian Fault, a specific fold-fault structure bearing traces of two stages of deformation has been discovered. At the first stage, during the formation of folds in the Flysch strata of the Middle Jurassic, a series of thrusts fr...
Within the Southeastern Caucasus, south of the Shalbuzdag mount, within the Tfan tectonic zone, just south of the Main Caucasian Fault, a specific fold-fault structure bearing traces of two stages of deformation has been discovered. At the first stage, during the formation of folds in the Flysch strata of the Middle Jurassic, a series of thrusts fr...
The morphology, history of development and displacement amplitudes of two large faults of the Greater Caucasus are considered. These faults are considered as sub horizontal detachments with amplitudes of tens of kilometers within the framework of plate tectonics concepts. In particular, it is assumed that the plate of the Transcaucasian massif is p...
The morphology, history of development and displacement amplitudes of two large faults of the Greater Caucasus are considered. These faults are considered as sub horizontal detachments with amplitudes of tens of kilometers within the framework of plate tectonics concepts. In particular, it is assumed that the plate of the Transcaucasian massif is p...
The problem of determining the width of the sedimentary basin at the place of a modern folded structure is solved on the example of the eastern part of the Alpine Greater Caucasus. The material of detailed structural cross-sections is used. Balanced profiles were constructed with use of a special method. The structural material is generalized withi...
The problem of determining the width of the sedimentary basin at the place of a modern folded structure is solved on the example of the eastern part of the Alpine Greater Caucasus. The material of detailed structural cross-sections is used. Balanced profiles were constructed with use of a special method. The structural material is generalized withi...
Detailed structural sections are used to identify of the geodynamic mechanisms of formation of the Hinterland folded systems (linear folding) of the Greater Caucasus and the Talas range of the Tien Shan. Balanced profiles are constructed using a special technique, in which 6 parameters are determined for "structural cell" objects (size 5-7 km): the...
Для выявления геодинамических механизмов формирования складчатых систем хинтерланда (линейная складчатость) Большого Кавказа и Таласского хребта Тянь-Шаня используются детальные структурные разрезы. По специальной методике строятся сбалансированные профили, в которых для объектов «структурная ячейка» (размер – 5-7 км) определяются 6 параметров: вел...
Более 30 лет назад для восточных регионов Северного Кавказа (Дагестан и Чечня) на площади 300 × 300 км для периода 1800–1985 гг. на качественном уровне было выявлено существование закономерного квазициклического режима сейсмичности. Закономерность заключалась в том, что уровень сейсмичности в течение одного цикла длительностью 10–30 лет снижался от...
Представлен метод построения сбалансированных профилей, применяемый для сложных разномасштабных складчатых структур хинтерланда. На основании получаемых профилей можно строить сбалансированные структуры в масштабе тектонических зон и складчатых систем или, по вертикали, – в масштабе коры и верхней мантии. В докладе показаны результаты, полученные д...
Представлен метод построения сбалансированных профилей, применяемый для сложных разномасштабных складчатых структур хинтерланда. На основании получаемых профилей можно строить сбалансированные структуры в масштабе тектонических зон и складчатых систем или, по вертикали, – в масштабе коры и верхней мантии. В докладе показаны результаты, полученные д...
Concepts about the processes of formation of the granite-metamorphic layer of the Earth's crust directly depend on our understanding of the phenomenon of the formation of folds in the central regions of the mobile belts – in Hinterland. As a result of constructing a balanced profile (the current length is 26 km) through the Caledonian folding of th...
В августе 2022 года были проведены совместные полевые исследования каледонской складчатости Таласского Ала-Тоо Институтом физики Земли и Кыргызским горно-металлургическим институтом им. У. Асаналиева. Одной из целей работ было ознакомление со складчатой структурой и освоение методов полевой структурной геологии. Были изучены мелкие складок в четыре...
Представления о процессах формирования гранито-метаморфического слоя земной коры прямо зависят от нашего понимания явления образования складок в центральных областях подвижных поясов – в хинтерланде. В результате построения сбалансированного профиля (современная длина 26 км) через каледонскую складчатость Таласского хребта (Северный Тянь-Шань) были...
Conventional cross‐section balancing techniques based on layer length measuring can be applied only for foreland structures. To analyze complicated hinterland structure with numerous small‐scale folds, this balancing technique requires the reliable and detailed tracing of the morphology of any layer throughout the cross‐section, which is unattainab...
Six parameters of the balanced model of the Alpine folded sedimentary cover [Yakovlev, 2015] on the scale of "structural cells" (size 3-7 km along the profile) are used as the initial material for the study of the geodynamic processes of the Greater Caucasus formation. These parameters include the depth of the basement top at several stages of the...
We discuss the result of a preliminary study [Zakharova et al., 1988], in which a pattern of seismicity manifestations in time and space was found at the qualitative level according to the catalog of 1800-1985. For a block of approximately 300 x 300 km in size, a seismic event with a "peak" magnitude occurs, after which the magnitude of subsequent...
Six parameters of the balanced model of the Alpine folded sedimentary cover [Yakovlev, 2015] on the scale of "structural cells" (size 3-7 km along the profile) are used as the initial material for the study of the geodynamic processes of the Greater Caucasus formation. These parameters include the depth of the basement top at several stages of the...
Яковлев Ф.Л. Методические аспекты комплексного изучения структур линейной складчатости. Геодинамика формирования блоков земной коры и анализ сейсмического процесса
Доклад носит обзорный методический характер. Он был прочитан на онлайн семинаре по геотектонике и геодинамике лабораторий 304, 701, 702 и 703 Института физики Земли 03 июня 2021 года. З...
The continental crust are forming from sediments during end of orogenic cycle by combination of three spectacular processes – magmatism, metamorphism and (almost unknown) folding formation. Because this fact, the importance of very long existing problem of folding formation mechanisms is extremely high. Any geodynamic model that claims to be a lead...
We discuss the result of a preliminary study (Zakharova et al., 1988), in which the regularity of seismicity in time and space was found at a qualitative level based on the catalog of 1800 – 1985. For a block of approximately 300 x 300 km in size, a seismic event occurs with a "peak" magnitude, after which the magnitude of subsequent seismic events...
The article discusses the history of research on the problem of folding formation mechanisms in connection with the results achieved in 1955-1965 by M. V. Gzovsky, who created the methodological foundations for this direction of science. It is shown that the level of research in Russia in this area exceeds the current level of foreign works. The pu...
The importance of the problem of folding is extremely high, since this process, along with magmatism and metamorphism, is one of the three that form the continental crust. Without solving this problem, no geodynamic models can be considered correct. The stages of research development from speculative and purely computational direct problems to kine...
A balanced model of the sedimentary cover of the Greater Caucasus was compiled based on detailed structural sections. This model has collected six parameters for 78 "structural cells" with an average size of 5-7 km, which are related to the geodynamic development of the earth's crust. These parameters are the depth of the basement top at three stag...
A balanced model of the sedimentary cover of the Greater Caucasus was compiled based on detailed structural sections. This model has collected six parameters for 78 "structural cells" with an average size of 5-7 km, which are related to the geodynamic development of the earth's crust. These parameters are the depth of the basement top at three stag...
A special method for restoring balanced profiles for hinterland folding blocks with a large number of small folds was applied for study of the folding. The structural section was divided on two kind of objects: folded domains (0.3 – 0.5 km) and structural cells (2 km). Three authors independently restored a very wide structure in the Tien Shan alon...
A special method for restoring balanced profiles for hinterland folding blocks with a large number of small folds was applied for study of the folding. The structural section was divided on two kind of objects: folded domains (0.3 – 0.5 km) and structural cells (2 km). Three authors independently restored a very wide structure in the Tien Shan alon...
The results of restoration of the balanced structures of the sedimentary cover for Greater Caucasus in the rank of "structural cells" are used as a source material for the analysis of geodynamic processes of formation of the entire structure using factor analysis. The data set for 78 structural cells includes 6 parameters, which have relation to th...
Theoretical bases of the analysis of natural and experimental folding of internal parts of folded systems (like Greater Caucasus) are considered: system of hierarchy of objects and language of the strain description of such objects. The results of reconstruction of balanced structures of the Greater Caucasus in the rank of sedimentary cover ("struc...
Full image of poster. The poster has text with explanation and 7 blocks of information.
Theoretical bases of the analysis of natural and experimental folding of internal parts of folded systems (like Greater Caucasus) are considered: system of hierarchy of objects and language of the strain description of such objects. The results of reconstruction...
Methods of Tectonophysics and Structural Geology were used to obtain the basic material of study. Based on detail structural sections, balanced models of the sedimentary cover of the Greater Caucasus were constructed, and then numerical data related to the history of the development of Greater Caucasus were obtained for 78 moderate-sized objects (5...
The main features of seismic activity of Racha earthquake are shown. These data do not allow to use only the model of movement type of thrust along a flat surface of metamorphic basement. The history of tectonic development of the entire region is discussed; the existence of four large blocks is shown. These blocks have different degrees of stabili...
The article describes the factor analysis procedure ensuring its correct usage for identifying the processes that cause formation of fold structures and the main layers of the continental crust in mobile belts. The proposed approach to this problem of geodynamics is specific: it aims at solving the inverse (rather than direct, which is common) prob...
EGU General Assembly 2018, Session TS7.8 Geodynamic evolution of the Greater Caucasus Orogen, Oral report 12-04-2018
Three geodynamic models of the Greater Caucasus with different value of shortening are compared in their parameter "volume of eroded rocks". Approximate similarity of volumes of eroded rocks with the volume of the synchronous accumulated sediments in foreland basins surrounding Greater Caucasus since Oligocene was criterion of models verisimilitude...
For study of Alpine Greater Caucasus (GC), the 24 detailed structural sections, of total length about 500 km, were used. All profiles were divided into "domains" in which structural parameters were measured. The dip of folds axial surface, an interlimb angle of folds and an inclination of an envelope plain of folds are related to a strain ellipsoid...
Geodynamic processes of folded formation and uplifted mountain structure can reveal itself in some quantified parameters. As processes can have different intensity in different parts of the structure, the statistical research of the corresponding parameters for a set of objects can give an information on these processes. The folded structure of Gre...
Three geodynamic models of the Greater Caucasus (GC) with different value of shortening are compared in their parameter "volume of eroded rocks". Approximate similarity of volumes of eroded rocks with the volume of the synchronous accumulated sediments in foreland basins surrounding Greater Caucasus since Oligocene was criterion of models verisimil...
Realistic geodynamic processes of formation of folded and mountain structure of Greater Caucasus with use of structural data were studied. In 24 detailed structural profiles of a total length about 500 km, 505 "folded domains" were allocated, and their pre-folded states were restored. These domains have been integrated in 78 "structural cells"; sho...
Six known statements of plate tectonics are considered, as well as two other points: the generally accepted assumption that the continental crust has a constant volume and the methodological way of actualism for the analysis of tectonics of the past based on modern geodynamics observations. It is shown by the example of specific structures that the...
The materials of the balanced model of the sedimentary cover of the Greater Caucasus are used for statistical analysis and for detection of the geodynamic processes forming the folded and mountainous structure of the region. The existence of two processes is shown – "Shortening", which determined the neotectonic uplift, and "Isostasy", which is res...
This article is focused on identifying geodynamic mechanisms leading to formation of large crustal blocks in nature. A specific feature of our study is statistical analysis of the data obtained by the methods of tectonophysics and structural geology. The analyzed material included 24 detailed structural sections (almost 500 km in total length) of G...
The realness of three typical geodynamic models of a structure and of a development of the Alpine Greater Caucasus, which have different values of a shortening and of an amplitude of a neotectonic uplift and erosion of the top part of a sedimentary cover, is investigated. Model of E. Milanovsky (1968) has 4-5 km of erosion for 15 million years and...
There is task of identification of the geodynamic mechanisms of formation of large blocks of crust, which were really operating in the nature. As material for a research, 24 detailed structural profiles of Greater Caucasus (with a total length about 500 km) have been used. The general thickness of the folded sedimentary cover is 10-15 km. Using a m...
The realness of three typical geodynamic models of a structure and of a development of the Alpine Greater Caucasus, which have different values of a shortening and of an amplitude of a neotectonic uplift and erosion of the top part of a sedimentary cover, is investigated. Model of E. Milanovsky (1968) has 4-5 km of erosion for 15 million years and...
The technique of balancing (restoration) of structure of the linear folded systems by "the geometry of folded domains" for structural cross-sections is described in details. Such balanced cross-sections are created for three stages of development of structure: for pre-folded, post-folded and post-mountain building (present day). Balancing of struct...
Детально описана методика балансирования структуры комплексов линейной складчатости по «геометрии складчатых доменов» для структурных разрезов. Такие сбалансированные разрезы строятся для трех стадий развития структуры: доскладчатой, постскладчатой и посторогенной (современной). Балансирование структуры проводится для условий постоянства объема все...
The compact disk is an addition to the book. The disk contains computer programs, files of data to the program of balancing of sections, images of initial structural sections, files of EXCEL tables for calculations of parameters and files of other materials, mentioned in the book.
Data of the balanced models of Mz-Cz sedimentary cover of Greater Caucasus (Yakovlev, 2015) were used in this work. Detailed structural profiles (24 in three areas of Caucasus with a total length of 500 km) were divided into 78 “structural cells” with an average width of 5-7 km. For these sections, their pre-folded states were reconstructed and a n...
Three types of models of formation of Greater Caucasus were compared using the "volume of eroded rocks" parameter among themselves and to natural data. The first model (Milanovsky, 1968) had no shortening of space. This model is shown on the map of neotectonic uplift (Grachev, 1998). According to this model, the raising up to 3-5 km took place for...
Abstract of Doctoral thesis. Manuscript not official. 2015. In English
Abstract of Doctoral thesis. Manuscript official. 2015. In Russian
Doctoral thesis, full official text. Manuscript. 2015. In Russian.
Abstract of doctoral thesis. Manuscript official. In Russian.
Institute of physics of the Earth, RAS, Paleogeodynamics Laboratory, Moscow, Russian Federation (yak@ifz.ru) Hinterland of Greater Caucasus (GC) has almost pure folded structure (stripe 1000x50 km) in alpine flysch-like sedimentary cover of 10-15 km thickness. Thin-layered sediments of hinterland formed relatively small folds (0.1-1 km width) and i...
Institute of physics of the Earth, RAS, Paleogeodynamics Laboratory, Moscow, Russian Federation (yak@ifz.ru) Method. As each fold has information about strain, numerous folds (0.1-1 km width) inside of hinterland (stripe about 1000 x 50 km) of Greater Caucasus (GC) allow to restore structure for whole sedimentary cover. Material of 24 detailed sect...
For recognition of folding formation mechanisms and of geodynamic setting of development of inner parts of mobile belts, the idea of a deforming description with use of parameters of strain ellipsoid is used. Such description includes for a separate fold a dip of an axial plain and a shortening value in axis perpendicular to axial plain as strain e...
Detailed data on structures of a sedimentary cover of the Greater Caucasus by three tectonic zones (Chiaur,
Tfan and Shakhdag) are analyzed. Eleven cross-sections with total length of 125 km have been studied. Folded
domains were selected in sections. Dip angle of folds axial surfaces, dip angle of an folds envelope, interlimb
angle of folds wer...
Linear folding, developing in fold and thrust belts, is treated as a hierarchic system, at each level of which objects are described by special kinematic models. Geometric parameters of natural folded structures are determined by a combination of various mechanisms incorporated in the model, and a value of finite strain. Several case studies demons...
This special issue of the CR Geoscience results from an
initiative of Jacques Angelier, with organizational support
of Fedor Yakovlev, who proposed to edit jointly the
proceedings for the All-Russian conference held in
Moscow on 13–17 October, 2008, focusing on ‘‘Tectonophysics
and current problems of Earth sciences’’. This
conference aimed at cele...
Introduction. In this publication, shear zones, being traditional objects of tectonophysical studies, are considered in terms of their strain states. This approach differs from a commonly applied one when shear zones are studied with consideration of stress fields. The difference of a stress field and a field of strain for a simple shearing has bee...
The structure of linear fold zones is considered as a set of objects of several hierarchic levels with specific kinematic
models of their formation. The prefolded structure was reconstructed, and recent depths of the sedimentary cover base were
predicted on the basis of these notions with the use of the Northwestern Caucasus folding as an example....
В сборнике публикуются материалы докладов, представленных на научную конференцию, посвященную сорокалетию создания в Институте физики Земли РАН лаборатории тектонофизики. В докладах рассматривается широкий круг научных проблем, при исследовании и решении которых используются
тектонофизические методы и подходы.
В сборнике публикуются расширенные тезисы докладов, представленных на научную конференцию, посвященную сорокалетию создания в ИФЗ РАН лаборатории тектонофизики.
В докладах рассматривается широкий круг научных проблем, при исследовании и решении которых используются тектонофизические методы и подходы.
В сборнике публикуются расширенные тезисы докладов, представленных на научную конференцию, посвященную сорокалетию создания в ИФЗ РАН лаборатории тектонофизики.
В докладах рассматривается широкий круг научных проблем, при исследовании и решении которых используются тектонофизические методы и подходы.
В сборнике публикуются расширенные тезисы докладов, представленных на научную конференцию, посвященную сорокалетию создания в ИФЗ РАН лаборатории тектонофизики. В докладах рассматривается широкий круг научных проблем, при исследовании и решении которых используются
тектонофизические методы и подходы.
The Greater Caucasus (GC) fold-and-thrust belt lies on the southern deformed edge of the Scythian Platform (SP) and results from the Cenozoic structural inversion of a deep marine Mesozoic basin in response to the northward displacement of the Transcaucasus (lying south of the GC) subsequent to the Arabia–Eurasia collision. A review of existing and...
Настоящее издание приурочено к юбилею Михаила Владимировича Гзовского, заложившего основы большинства направлений тектонофизики, и отражает современное состояние и результаты исследований в этой отрасли наук о Земле. Оно фактически продолжает сборник«М.В. Гзовский и раз-витие тектонофизики», опубликованный в2000 году в издательстве Наука.
Михаил Вл...
![Figure 5. Structural profiles constructed by Chediya [1986]. Fivefold...](profile/Fedor-Yakovlev/publication/255607836/figure/fig3/AS:297693457993731@1447987059970/Structural-profiles-constructed-by-Chediya-1986-Fivefold-vertical-exaggeration-1_Q320.jpg)
Unravelling the underlying causes of mountain building is one pivotal issue of geotectonics. The most popular model invokes crustal thickening through horizontal, across mountain ranges, contraction of the area occupied by a mountainous country with its ensuing isostatic uplift. Another model calls for crustal underplating due to either underthrust...
On December 17, 1999, the scientific community
celebrated the 80th anniversary of the birth of Professor
Mikhail Vladimirovich Gzovskii, outstanding geologist
and geophysicist, a founder of the new discipline in the
Earth sciences, active organizer and acknowledged
leader of tectonophysical research in our country, head
of the Laboratory of Tectono...
Ultramafic and clinopyroxenite xenoliths as big as 10 cm and amphibole megacrysts as large as 4 cm were discovered within the Racha-Lechkumskaya suture zone, separating the Greater Caucasus meganticlinorium and the Transcaucasus median massif segment. Based on data analysis, the rocks and minerals of the inclusions were derived from considerable de...
The mountain building is closely connected with the increasing of the thickness of the continental crust, and with the isostasy phenomenon. In one's turn the increasing of the crust thickness is associated usually either with the shortening of the crust (as example, [Avouac et al, 1998] or with the process of the underplating (as example, [Grachev,...
