The Precambrian crust of Saudi Arabia, the eastern Sudan and Egypt consists of abundant granites and granodiorites, arc-type volcanics, and well-authenticated ophiolites. The metamorphic grade is generally low. Archaean remnants are absent. In contrast, the Precambrian in the Mozambique belt in Kenya and Tanzania consists of high-grade metamorphic rocks, contains much reworked Archaean basement, and few granitic or granodioritic plutons. It is proposed that there is a transition from crust formed by successive accretion of island arc/back arc complexes in the north to products of collisions between plates carrying Archaean continental crust in the south. The collision led to Himalayan-type crustal thickening, deep erosion and isostatic uplift, exposing deep-crustal rocks. <...>

В работе рассмотрены современное состояние учения о рудных формациях и наиболее рациональные пути, принципы и критерии металлогенической систематики месторождений полезных ископаемых на структурно-формационной основе. Основное требование при выделении рудных формаций — соблюдение принципа соответствия между геологическими и рудными формациями на примере разнообразных мезозойских эндогенных месторождений Забайкалья. Приведена подробная характеристика типовых многометальных рудных формаций, сопровождаемая описанием наиболее важных месторождений; рассмотрены закономерности размещения рудных формаций с учетом глубинного строения земной коры.

The depositional environments treated so far, and the lithologie associations generated in them, have either been wholly surficial (supracrustal) or they have had a significant supracrustal component. In contrast, the environmemts in which the rocks treated in Chapters 9,28,29,32 formed, were intracrustal. The lithologie associations described in Chapters 4,5,7, 11-14, 31,33, are partly intracrustal. <...>

These bibliographies and the notes that accompany them have been prepared to aid the economic geologist in his study of ore deposits; they certainly will not do all his work for him. I have tried to include all ore districts in Africa, Asia (exclusive of the U.S.S.R.) and Australasia for which sufficient material is available in print to permit a student of ore deposits to obtain a real understanding of any one of the deposits. I have tried to include as many references as possible in languages other than English. <...>

В книге рассмотрены вопросы эффективного использования и ремонта горношахтного оборудования.
Освещены проблема надежности при проектировании технических систем и в процессе их эксплуатации, а также вопросы оптимизации профилактического обслуживания горношахтного оборудования.
Построены экономико-математические модели определения оптимальной длительности ремонтного цикла, а также оптимального срока службы угольных комбайнов с учетом их физического и морального износа и условий эксплуатации.
Книга рассчитана на инженерно-технических и научных работников угольной промышленности

В книге дается подробная палинологическая характеристика разновозрастных антропогеновых отложений Белоруссии. Основное внимание уделено анализу межледниковых образований. Для каждого межледниковья выявлены определенные диагностические признаки и даны типичные спорово-пыльцевые диаграммы. На основании палинологических данных сделана реконструкция основных этапов развития растительности на территории Белоруссии от конца плиоцена до наших дней.
В работе впервые обобщены материалы, отражающие современное состояние палинологической изученности ангропогеновых отложений в БССР. Представляет интерес для геологов, географов, биологов и специалистов смежных областей знаний, сталкивающихся с изучением антропогеновых отложений Русской платформы, и в первую очередь может быть использована при производстве спорово-пыльцевых анализов, а также геолого-съемочных и геологоразведочных работ.

In relation to modern lines of communication it seems surprising that the Gregory Rift Valley was the last part of the system to become known. Much of the earlier exploration had however been centred on the problem of the sources of the Nile, and in consequence the Western or Albertine Rift was explored by Samuel Baker as early as 1862/63 (Baker 1866). Additionally there was a strong tendency to use the convenient base at Zanzibar Island for journeys inland by the Arab slave trading routes from Pangani and Bagamoyo; these led to the Tanganyika Rift and Nyasaland rather than to the area of modern Kenya. The first penetrations into the Gregory Rift area were in I883; Joseph Thomson made an extensive journey into Central Kenya which he described in his book of 1887, 'Through Masai Land' which had as a subtitle, 'a journey of exploration among the snowclad volcanic mountains and strange tribes of Eastern Equatorial Africa--being the narrative of the Royal Geographical Society's Expedition to Mount Kenya and Lake Victoria Nyanza i883-84'.<...>

How can we know about rivers that became extinct millions of years ago? The flowing water has gone. The channels and river plains have gone. Even the continents have gone. Only the river sediments of gravel, sand and mud remain, turned into rock as conglomerate, sandstone and mudstone through geological time. Prior to the observant eye of Leonardo da Vinci in the fifteenth century, the connection between soft sediment and solid rock was obscure.

: This paper presents that in expansive clays containing montmorillonites the generalized water flow equation can be described regarding a solid volume as a reference. The water retention curves are derived by calculating both volumetric water content and the chemical potential of water in a stacking model of the 2:l layer. It is pointed out that molecular dynamics simulation is useful to analyze the characteristics of water retention curves, and that a homogenization analysis also is useful to solve the flow problems in an inhomogeneous porous body <...>