Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
The fi eld trip described in this guide starts in the “Norwegian Alps,” the high mountain massif called Jotunheimen, and runs out along Sognefjorden, the world’s longest fjord, to the islands along the west coast of Norway. Geologically, the Sognefjord transect provides a complete cross section through the Caledonian orogenic belt, of Paleozoic age, which in Norway stretches along the west coast from Stavanger to North Cape, a distance of ~2000 km.
It is easier to give examples of geological structures than to define them. The word 'structure' means 'that which is built or constructed'. Structural geologists use the word to signify something that has been produced by deformation; that is, by the action of forces on and within the Earth's crust. Structures consist of a geometric arrangement - of planes, lines, surfaces, rock bodies, etc. The form and orientation of this arrangement reflect the interaction between the deforming forces and the preexisting rock body. <...>
The small-scale structures referred to in this publication are those structures of tectonic origin that can be observed with the naked eye in the field. Their scale varies broadly between that of the hand-specimen to that of the exposure, or even mountainside. Such structures are the visible effects of rock deformation caused by local stresses and movements which have been induced in the rocks by external tectonic forces of possibly unknown origin. Recognition of these minor structures, and appreciation of their origin and significance assist the field geologist to elucidate the larger-scale geological structures of his area.
In 1930 Bruno Sander, in his now classic Gefiigekunde der Gesteine, presented a comprehensive account of the fabric of deformed rocks, new geometric methods for its analysis, and a broad philosophy for its kine¬ matic interpretation. Since then, and especially since the Second World War, Sander’s methods have been applied with varying degrees of success in attempts to elucidate the structure of metamorphic rocks in many countries. Outstandingly successful among such attempts are studies, still in progress, on the nature and geometry of repeated folding in the Highlands of Scotland.
After a well is drilled, a string of geophysical instruments (called a sonde) is placed into the borehole to record the geophysical properties of the subsurface strata. The data are digitally recorded in a nearby logging facility (commonly a logging vehicle for land-based rigs) and transferred to a paper log and/or saved as a digital .las data file. It is very common to get both a digital and paper copy of the well.
This Special Issue marks the tenth anniversary of the very first issue of the Journal of Structural Geology. The idea of a specialist journal in structural geology was first conceived at a meeting in September 1977 between Paul Hancock of Bristol University and Peter Henn of Pergamon Press. In June 1978 Paul Hancock formally became Editor-in-Chief, joined soon after by Tony Barber as Associate Editor. They then recruited an Editorial Advisory Board and called for papers for the first volume. Those who responded by submitting papers to a then-unknown new journal are still remembered with gratitude, because by showing their faith they started the ball rolling <...>
Систематизированы общие сведения и понятия о формах залегания слоев и блоков осадочных, магматических и метаморфических горных пород в толщах земной коры, о складчатых и разрывных нарушениях, способах изображения их на геологических картах на основе материалов лекций по «Структурной геологии», прочитанных на кафедре геологии, геодезии и кадастра в 2015-2020 г.г. Материалы учебного пособия представляют собой конспекты лекций для студентов очного и заочного обучения специальности 21.05.02 Прикладная геология, специализаций – «Геологическая съемка, поиски и разведка твердых полезных ископаемых», «Геология нефти и газа», «Поиски и разведка подземных вод и инженерно-геологические изыскания», изучающих дисциплину «Структурная геология».
Описаны геологические закономерности строения и развития сетей трещин в горных породах. Предложена теория формирования сетей трещин. Практический интерес представляет методика исследования сетей трещин и оценки свойств скального массива. Для специалистов в области инженерной и структурной геологии, проектировщиков и строителей, горных инженеров