Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
I have been teaching Structural Geology and Tectonics for the past four decades and during this period, I always felt a need for a glossary or definitional dictionary devoted to this branch. I therefory, made an attempt in this direction. The editor for while doing the groundwork of the book made use of Glossary of Geology edited by R. Bates & J. Jackson (Am. Geo!. Inst., 1980); Glossary of Geology in Hindi edited by myself (CSTT Govt. of India 1996); Introduction to the structure of the earth by E. Spencer; Tectonic Geology by myself (2006); Geology: an Introduction by myself (2004).
Structural Geology is the study of deformed rocks. To do so, we define the geometries of rock bodies in three dimensions. Then, we measure or infer the translations, rotations, and strains experienced by rocks both during, and particularly since, their formation based on indicators of what they looked like prior to their deformation. Finally, we try to infer the stresses that produced the deformation based on our knowledge of material properties. Structure is closely related to various fields of engineering mechanics, structural engineering, and material science. <...>
Number 1 Folds and the strain ellipsoid: a general model Patterns of fold interference: influence of early fold shapes Brittle deformation in pitted pebble conglomerates Kinematics of late Mesozoic thrusting, Pilot Mountains, west-central Nevada, U.S.A. An inverse problem in microtectonics for the determination of stress tensors from fault striation analysis The effect of the basal-prism mechanism switch on fabric development during plastic deformation of quartzite Mineral reactions participating in intragranular fracture propagation: implications for stress corrosion cracking Diapirism and gravity tectonics: report of a Tectonic Studies Group conference held at Leeds University, 25-26 March 1980
Hercynian mylonite belts in the eastern Pyrenees: an example of shear zones associated with late folding The Caledonian thrust and shear zones of N.W. Scotland
Shear zones in the Precambrian crust of Southern Africa The role of shear belts in the structural evolution of the South Harris igneous complex The South Armorican shear zone Shear zones in the granodioritic massifs of the Central Pyrenees and the behaviour of these massifs during the Alpine orogenesis The Western Meseta shear zone, a major and permanent feature of the Hercynian belt in Morocco Shear zones in the Iberian Arc
Editorial: background to the Journal Fold trains in a glacier of salt in southern Iran
The development of asymmetrical folds in a cross-laminated siltstone Orthogneiss, mylonite and non coaxial deformation of granites: the example of the South Armorican Shear Zone Progressive deveiopmem of quartz fabrics in a shear zone from Monte Mucrone, Sesia-Lanzo Zone, Italian Alps Deformation in low grade shear zones in the Old Red Sandstone, S.W. Wales Removal of finite deformation using strain trajectories
This paper introduces a new down-plunge projection method that allows geologists to rapidly determine the first-order structural geometries of mineral deposits. The method assumes that the mineralised bodies under analysis resulted when hydrothermal fluids flowed through highly permeable zones that were formed from deformation. Therefore, the grade patterns should mimic the significant structures that controlled the fluid flow. Once these structural geometries are determined, the patterns can be used to simplify, speed up, and substantially increase the accuracy of the geological modelling processes of both explicit and implicit methods of modelling.
The onset and rapid spread of canals across the face of Britain in the late eighteenth century, closely followed by the building of the railway network in the early nineteenth century, were largely responsible for making the study of the strata, or stratigraphy, a subject of both practical and economic value. It is not surprising, therefore, that it was a land surveyor and canal engineer, William Smith (1769–1839), working initially in southern and eastern England, who first worked out that rock strata were not randomly disposed around the country but arranged in a definite order.
Предложен принципиально новый механизм деформации земной коры при одноосном горизонтальном сжатии. Такая ситуация возникает, когда массы коры движутся горизонтально, например, при коллизии. Деформации осуществляются тектонопарой «надвиг–продольный изгиб»: кора разделяется на тектонические блоки положительного и отрицательного изгиб. Изгибающие моменты фокусируют механическую энергию сжатия, создавая высокоградиентное напряжение. Но арка не образуется: плита остается квазиплоской.
