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Выпуск 59
Издание:Economic geology, 2004 г., 9 стр.
Язык(и)Английский
Controversies on the Origin of World-Class Gold Deposits, Part I: Carlin-type Gold Deposits in Nevada

This article and a future article in the SEG Newsletter will serve as previews to an SEG-sponsored forum to examine and discuss the origins of gold deposits in the Carlin and Witwatersrand camps. The forum will be held in Reno, Nevada, on May 14, 2005, in conjunction with Geological Society of Nevada’s Symposium 2005 – Window to the World. Both districts have been the focus of major controversies. In this article, three short papers discuss the origin of Carlin-type deposits in north-central Nevada. Over the last few decades, Carlin-type deposits have been seen as shallow hot spring deposits, distal products of porphyry copper deposits, and the uppermost parts of deep mesother-mal systems. The first paper, by Jean Cline, provides an introduction to the characteristics of Carlin-type deposits and a framework for discussions of their origin. The second paper, by Marcus Johnston and Michael Ressel, argues for a magmatic origin for the deposits, and specifically that plutons are the source of heat and probably fluids and metals. The third paper, by Eric Seedorff and Mark Barton, discusses amagmatic models for the origin of Carlin-type deposits, as well as pointing out shortcomings in magmatic models. These authors will give talks at the May 2005 forum, which will be followed by panel and open discussions with the aim of identifying what we need to know to better understand and explore for these deposits.

Редактор(ы):Carannante G., Pedley H.M.
Издание:The Geological Society of London, 2006 г., 371 стр., ISBN: 1-86239-193-9
Язык(и)Английский
Cool-water carbonates. Depositional systems and palaeoenvironmental controls / Карбонаты холодных вод. Осадочные системы и палеоэкологический контроль

This review of marine, cool-water carbonate ramps considers both their defining features and the key publications relating to them. Cool-water carbonate environments are dominated by open, skeletal debris-covered sea bottoms which support biological assemblages devoid of hermatypic coral reefs, calcified green algae and non-skeletal grains. The growing body of modem literature deals mainly with Neogene to Recent examples, particularly from the Australian, New Zealand and Mediterranean regions. Nevertheless, many ancient examples have been recognized and, without doubt, many more - currently described as 'tropical carbonates' - will also be found to be cool-water examples. <...>

Автор(ы):Rose A.F.
Издание:The Davis Press, 1906 г., 127 стр.
Язык(и)Английский
Copper work

During the past few years many experiments have been tried in the development of Manual Training Courses and much time has been spent in discussing of what lines of work they should consist. Wood and iron were the first materials used and are yet indispensable, but experience has led those who are developing this work to believe that there are other materials as well adapted to Manual Train¬ ing work in all its various forms. Clay, used not only for modeling but for ceramic work as well, leather, brass and copper are materials that have also been put to the test and found satisfactory in many ways

Автор(ы):McPhee C., Reed J., Zubizarreta I.
Редактор(ы):Cubitt J.M.
Издание:Elsevier, 2015 г., 840 стр., ISBN: 978-0-444-63533-4
Язык(и)Английский
Core analysis: A best practice guide / Анализ керна: обзор лучших практик

This is the fifth book in the Developments in Petroleum Science series since it incorporated the Handbook of Petroleum Exploration and Production in 2013. After books on geophysics, stratigraphic reservoir characterisation, petrophysics and integrated sand management, we now switch our attention to core analysis.

Автор(ы):Annels A.E., Dominy S.C.
Издание:2003 г., 8 стр.
Язык(и)Русский
Core recovery and quality: important factors in mineral resource estimation / Извлечение и качество керна: важные факторы при оценке минеральных ресурсов

The estimation of mineral resources is critical to all mining operations irrespective of size or commodity.1,12 The risks associated with mining are varied and complex, where the dominant source of risk is the orebody itself. Reverse circulation (RC) and diamond core drilling methods are used extensively for the collection of samples from depth.

Редактор(ы):Helffrich G., Nakagawa T., Satish-Kumar M., Tsuchiya T.
Издание:Wiley, 2023 г., 274 стр., ISBN: 978-1119526902
Язык(и)Английский
Core-mantle co-evolution. An interdisciplinary approach / Коэволюция ядра и мантии. Междисциплинарный подход

The Earth’s deep interior, being physically inaccessible, is difficult to study directly. The necessarily indirect methods used in its study are best pursued collaboratively in order to bring all possible sources of knowledge to bear on the topic, hence the need for interdisciplinary research. Over recent decades, there have been advances in investigating the dynamics of the Earth’s deep interior. In terms of experimental and observation work, there have been innovations in high-temperature and high-pressure experiments (employing diamond anvil cells and synchrotron radiation facilities), dramatically improved geochemical analyses aided by particle physics detectors, and seismic wave observations and theory. In terms of computational work, methodological innovations and increased computational power have facilitated theoretical calculations of mineral properties and fluid dynamical simulations at the micro and macro scale.

Автор(ы):Beer J., McCracken K., Steiger R.
Издание:Springer, 2012 г., 422 стр., ISBN: 978-3-642-14650-3
Язык(и)Английский
Cosmogenic radionuclides. Theory and applications in the terrestrial and space environments / Космогенные радионуклиды. Теория и применение в земной и космической средах

For a small child, the world is full of wonders. Everyday it discovers new ones. Soon it starts to ask tough questions like: “Why does an apple fall down from a tree, why does the water in an alpine river with large rocks partly flow uphill, why is the
Sun hot and why does it turn red in the evening, how is a rock formed and when did it happen”? <...>

Издание:AACE, 2012 г., 17 стр.
Язык(и)Английский
Cost estimate classification system – as applied in the mining and mineral processing industries / Система классификации сметных расходов, применяемая в горнодобывающей и горно–обогатительной промышленности

As a recommended practice (RP) of AACE International, the Cost Estimate Classification System provides guidelines for applying the general principles of estimate classification to project cost estimates (i.e., cost estimates that are used to evaluate, approve, and/or fund projects). The Cost Estimate Classification System maps the phases and stages of project cost estimating together with a generic project scope definition maturity and quality matrix, which can be applied across a wide variety of process industries. <...>

Автор(ы):Farra V.
Издание:Departement de Sismologie, Paris, 1989 г., 40 стр.
Язык(и)Французский
Cours de theory des rais  (Institutions de physique du globe de Paris) / Курс теории лучей (Институт физики земли, Париж)

Nous nous interesserons dans ce cours au calcul des sismogrammes synthetiques dans des milieux complexes au moyen des methodes asymptotiques. Je parlerai essentiellement de la theorie des rais.
Depuis une vingtaine d'annees, les sismogrammes synthetiques ont ete utilises de facon routiniere pour inter preter les donnees sismiques et sismologiques. <...>

Издание:Ruhr-universitat Bochum, Bochum, 1997 г., 135 стр.
Язык(и)Английский
Cretaceous depositional environments of NW Germany / Условия отложения мелового периода на северо-западе Германии

15 outcrops exposing sediments of Early and Late Cretaceous age (Berriasian-Campanian) are described from the Subhercynian Basin (Quedlinburg-Blankenburg area) and the eastern part of Lower Saxony (Salzgitter-Hannover area). Apart from the bio- and lithostratigraphy, the fauna, flora, sedimentology, the palaeoenvironment and the regional position of these outcrops is discussed. New data and results going back to research performed from 1990 to 1996 are presented and sequence-stratigraphic models are proposed for some outcrops. Some of the microfauna and -flora and the macrofauna is documented by plates.

The following outcrops exposing sediments of Early Cretaceous age are described: the Obernkirchen Sandstone (Berriasian) at Munchehagen (No. 15), mid-Hauterivian sediments rich in ammonites near Resse (No. 13), pale-dark bedding rhythms of Late Hauterivian age near Frielingen (No. 14), Hauterivian iron ores of the Glockenberg section (No. 5) and clays of Barremian and Aptian age near Sarstedt (No. 9). Outcrops of sediments of Late Cretaceous age are: Hoppenstedt (No. 3), Vienenburg (No. 4), Baddeckenstedt (No. 6), and the HPCF II quarry at Misburg (No. 10), exposing the Cenomanian and Lower Turonian; the sediments exposed in the Salzgitter-Salder quarry (No. 7) are of mid-Turonian to Early Coniacian age, the Lehofsberg section near Quedlinburg (No. 1) is of mid-Coniacian age; shallow marine elastics of early Campanian age of the Subhercynian Basin are described from near Blankenburg (No. 2), marly and calcareous Campanian basinal sediments are exposed in the HPCF II (No. 10), Germania IV (No. 11) and Teutonia I (No. 12) quarries at Misburg.

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