A broad west-to-east increase of many metal concentrations has been found in stream sediments during a reconnaissance investigation conducted in conjunction with geologic studies in the Santa Renia Fields and Beaver Peak 7–1/2 minute quadrangles near the northern end of the Carlin trend of gold deposits in the Tuscarora Mountains. This regional increase in metal concentrations coincides with a dramatic change in landform wherein high concentrations of metals in stream sediments appear to correlate directly with areas of high elevations and steep slopes in the Beaver Peak quadrangle. Robust erosion combined with high flow rates in streams from these higher elevations are envisaged to have contributed significantly to increased metal concentrations in the stream sediments by an enhanced presence of minerals with high specific gravities and a correspondingly diminished presence of minerals with low specific gravities. Minerals with low specific gravities probably have been referentially flushed down stream because of high transporting capacities for sediment by streams in the Beaver Peak quadrangle. In addition, the Carlin trend, a generally northwest-alignment of gold deposits in the Santa Renia Fields quadrangle, is well outlined by arsenic concentrations that include a maximum of approximately 54 parts per million. Further, a weakly developed distal-to-proximal metal zonation towards these gold deposits appears to be defined respectively in plots showing distributions of thallium, arsenic, antimony, and zinc. A broad area of high metal concentrations—including sharply elevated abundances of Ag, As, Au, Cd, Co, Cu, Mn, Ni, P, Sb, Sc, Te, V, and especially Zn—near the southeast corner of the Beaver Peak quadrangle primarily could be the result of stratiform mineralized rocks in the Ordovician Vinini Formation or Devonian Slaven Chert, or the result of a subsequent Mesozoic or Tertiary epigenetic overprint. <...>

Isotopic (nuclear) geology constitutes an exact, quantitative branch of the Earth sciences which has expanded rapidly to cover a wide spectrum of applications since the establishment of its basic principles by the early 1950s, in part following seminal researches by H. C. Urey, H. A. Lowenstam, S. Epstein, T. Mayeda and numerous others. This immense progress, accelerating in recent years, led to the application of isotopes in attempting to resolve a variety of geochemical and geological problems in the Earth sciences. Lunar exploration too provided rocks for analysis and their examination stimulated refinements in mass spectrometry later used for terrestrial materials as well. New geochronometric methods were devised and include those based on the radioactive decay of l47Sm to l4:tNd, l76Lu to l7f,Hf, l87Re to ,87Os and 4llK to 4(1Ca, as well as others depending upon the production and distribution of cosmogenic radionuclides such as 2(,A1, l0Be and 36C1.

Научно-популярный очерк об основных этапах освоения Сибири и Дальнего Востока.
Большое внимание в очерке уделено освещению походов Ивана Москвитина, Василия Пояркова, Семена Дежнева, Ерофея Хабарова, Витуса Беринга, Геннадия Невельского и других русских землепроходцев и моряков.
Рассчитан на широкий круг читателей.

Проветривание рудников или рудничная вентиляция является одним из самых важных и в то же время злополучных отделов горного искусства: важных потому, что небрежность здесь может повести к катастрофам, когда люди гибнут массами, „не говоря уже о материальном ущербе, а злополучных—потому, что фактически из' года в год неизменно то тут, то там происходят взрывы, уносящие сотни и тысячи жертв, волнующие общественное мнение и тщетно заставляющие изыскивать меры к предотвращению несчастий.

Como puede verse por el título, este libro trata de Geología aplicada a la Minería. Menos evidente es, quizás, el hecho que intenta cubrir un campo bastante distinto del de aquellos textos titulados Yacimientos Minerales o Geología Económica. Estos libros se ocupan principalmente del origen y naturaleza de los yacimientos,y de descripciones de distritos mineros característicos, y proporcionan al geólogo minero profesional la base científica para su trabajo.

Изданная в США в 1994 году, она до сих пор привлекает внимание, будучи написанной в жанре научно-популярной литературы, но содержащей, по словам автора, и «...некую сумму базовой информации о каменных орудиях и способах их изучения*.
В основу этого своеобразного практического руководства по изучению и применению техник обработки камня Дж.Ч. Уиттакер положил результаты своих долголетних экспериментальных работ по расщеплению различных природных и искусственных материалов. Издание иллюстрировано графическими схемами, рисунками археологического и этнографического материалов, изображениями вызывающих восхищение реплик, выполненных современными специалистами в области экспериментальной археологии. Такая визуализация технических приемов позволяет читателю более предметно следить за ходом рассуждений автора, усиливает доказательность выдвигаемых им постулатов. Кроме того, издание дополнено кратким англо-русским словарем археологических терминов.
Издание рассчитано, прежде всего, на студентов, специализирующихся в области археологии и, в особенности, занимающихся экспериментальным нэп-пингом. Впрочем, любому читателю книга будет интересна.
Публикация осуществляется с согласия автора.   

This volume resulted from the International Conference on Thrust Tectonics, convened by the editor and the Fault Dynamics Research Group, Department of Geology, Royal Holloway, University of London, in April 1999. The papers presented here are a selection of key presentations on thrust tectonics, as well as invited submissions from other authors who were not able to attend the meeting. The papers presented in this volume reflect the current research on thrust tectonics and its applications to hydrocarbon systems. The chapters are subdivided into four broad categories, each of which covers the most important aspects of thrust-belt studies. The categories are

(1) geodynamics of thrust systems,
(2) analog modeling of thrust systems,
(3) fault-related folds in thrust systems, and
(4) case studies. <...>

Geomorphology has undergone a drastic change in scope and philosophy during the last several decades. In the past, the discipline was primarily concerned with the evolutionary development of landscapes under a wide variety of climatic and geologic controls. More recently, geomorphologists have recognized the need for an applied rather than a historical emphasis. This change in philosophy has placed geomorphology at an interface with many other disciplines. Today’s geomorphologist must relate to problems that face hydrologists, engineers, pedologists, foresters, and many other types of earth scientists. The bond that unites geology and geomorphology with so many apparently diverse disciplines is the common need to understand the processes operating within the Earth’s surficial systems. Thus, although the historical aspect of landscapes remains important, it is absolutely essential for earth scientists to have a basic understanding of surface mechanics and, in addition, of how those process mechanics are reflected in the landforms they create. This edition of Process Geomorphology, like its predecessor, is an attempt to satisfy those needs. The prime purpose of the book remains as it was, to provide undergraduate students with an introductory understanding of process mechanics and how process leads to the genesis of landforms. <...>

The job of a production facility is to separate the well stream into three components, typically called "phases" (oil, gas, and water), and process these phases into some marketable product(s) or dispose of them in an environmentally acceptable manner. In mechanical devices called "separators" gas is flashed from the liquids and "free water" is separated from the oil. These steps remove enough light hydrocarbons to produce a stable crude oil with the volatility (vapor pressure) to meet sales criteria. Figures 1-1 and 1-2 show typical separators used to separate gas from liquid or water from oil. Separators can be either horizontal or vertical in configuration <...>

The mining industry contributes significantly to the health of the worlds’ economy. Indeed, the total annual revenue generated by the industry worldwide has exceeded $500 billion US for the past 6 years. Over this time, the net profit margins have decreased from 25% in 2010 to 4% in 2016. The significant global economic uncertainty together with declining trends in average ore grades, declining market prices, increasing mining costs, and the complex regulatory, environmental and safety restrictions in which the industry must operate is contributing to this decline in profitability. Consequently, the economic viability of the modern-day mine is very highly dependent on careful planning and management. This, of course, presents enormous opportunities for the application of cutting-edge optimisation technology. Optimisation techniques have been successfully applied to resolve a number of important problems that arise in the planning and management of large and complex mines. Applications that are well documented include ore-body modelling and ore reserve estimation, optimal pit design, optimal production schedules, optimal blends, effective equipment selection, utilisation and maintenance, efficient mine site rehabilitation and a range of transport and logistics issues. This book focusses on the important truck–loader selection problem. <...>