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Author : Anonim
Publisher : Natural Resources Canada
Page : 23 pages
File Size : 51,9 Mb
Release : 2024-06-30
Category : Electronic
ISBN : 9781100106496
Author : Mark Donald Hannington,Charles Tucker Barrie
Publisher : Unknown
Page : 684 pages
File Size : 51,8 Mb
Release : 1999
Category : Abitibi Greenstone Belt (Ont. and Québec)
ISBN : STANFORD:36105019733067
Author : Joachim Gottsmann,Joan Marti
Publisher : Elsevier
Page : 516 pages
File Size : 47,5 Mb
Release : 2011-09-22
Category : Science
ISBN : 9780080558974
This volume aims at providing answers to some puzzling questions concerning the formation and the behavior of collapse calderas by exploring our current understanding of these complex geological processes. Addressed are problems such as: - How do collapse calderas form? - What are the conditions to create fractures and slip along them to initiate caldera collapse and when are these conditions fulfilled? - How do these conditions relate to explosive volcanism? - Most products of large caldera-forming eruptions show evidence for pre-eruptive reheating. Is this a pre-requisite to produce large volume eruptions and large calderas? - What are the time-scales behind caldera processes? - How long does it take magma to reach conditions ripe enough to generate a caldera-forming eruption? - What is the mechanical behavior of magma chamber walls during caldera collapse? Elastic, viscoelastic, or rigid? - Do calderas form by underpressure following a certain level of magma withdrawal from a reservoir, or by magma chamber loading due to deep doming (underplating), or both? - How to interpret unrest signals in active caldera systems? - How can we use information from caldera monitoring to forecast volcanic phenomena? In the form of 14 contributions from various disciplines this book samples the state-of-the-art of caldera studies and identifies still unresolved key issues that need dedicated cross-boundary and multidisciplinary efforts in the years to come. * International contributions from leading experts * Updates and informs on all the latest developments * Highlights hot topic areas and identifies and analyzes unresolved key issues
Author : C. M. R. Fowler,Cindy J. Ebinger,C. J. Hawkesworth
Publisher : Geological Society of London
Page : 378 pages
File Size : 53,7 Mb
Release : 2002
Category : Science
ISBN : 1862391092
Author : Richard E. Ernst,Kenneth L. Buchan
Publisher : Geological Society of America
Page : 604 pages
File Size : 49,6 Mb
Release : 2001-01-01
Category : Science
ISBN : 0813723523
Author : G.R.T. Jenkin,P.A.J. Lusty,I. McDonald,M.P. Smith,A.J. Boyce,J.J. Wilkinson
Publisher : Geological Society of London
Page : 335 pages
File Size : 49,9 Mb
Release : 2015-01-02
Category : Science
ISBN : 9781862396265
Ore deposits form by a variety of natural processes that concentrate elements into a volume that can be economically mined. Their type, character and abundance reflect the environment in which they formed and thus they preserve key evidence for the evolution of magmatic and tectonic processes, the state of the atmosphere and hydrosphere, and the evolution of life over geological time. This volume presents 13 papers on topical subjects in ore deposit research viewed in the context of Earth evolution. These diverse, yet interlinked, papers cover topics including: controls on the temporal and spatial distribution of ore deposits; the sources of fluid, gold and other components of orogenic gold deposits; the degree of oxygenation in the Neoproterozoic ocean; bacterial immobilization of gold in the semi-arid near-surface environment; and mineral resources for the future, including issues of resource estimation, sustainability of supply and the criticality of certain elements to society.
Author : Sophie Decrée
Publisher : John Wiley & Sons
Page : 372 pages
File Size : 40,5 Mb
Release : 2024-02-06
Category : Technology & Engineering
ISBN : 9781789451368
Metallic resources play a huge role in many fields: in the energy transition, the development of new technologies and the production and storage of green energy. Metallic Resources 2 presents various studies in notable metallogenic regions or deposits worldwide that enable us to tackle the question of the concentration of metals, especially strategic metals, in various geodynamic settings. An understanding of the geological processes that lead to the formation of deposits and influence their concentrations in the Earth's crust is of the utmost importance when it comes to uncovering new mineral resources. This book puts forward various different methodological approaches necessary in the study of deposits of metallic resources, from field observations to microanalysis. A study of specific geo-politico-economic frameworks is also presented.
Author : Otto van Breeman
Publisher : Natural Resources Canada
Page : 34 pages
File Size : 44,5 Mb
Release : 2006
Category : Geological time
ISBN : 9780662443629
Author : Derek John Blundell,Franz Neubauer,Albrecht Quadt
Publisher : Geological Society of London
Page : 374 pages
File Size : 52,5 Mb
Release : 2002
Category : Science
ISBN : 186239122X
Author : John Ridley
Publisher : Cambridge University Press
Page : 411 pages
File Size : 54,9 Mb
Release : 2013-07-04
Category : Nature
ISBN : 9781107022225
This book systematically describes and illustrates major ore deposit types, and links deposits to geological settings and the processes behind their formation.
Author : Alan G. Galley
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 42,9 Mb
Release : 2002
Category : Electronic
ISBN : 9780660187440
The Flin Flon Paleoproterozoic volcanic belt of north central Manitoba & Saskatchewan contains numerous volcanogenic massive sulphide (VMS) deposits of great economic importance. In view of concerns about the long-term economic stability of that region, the Flin Flon Targeted Geoscience Initiative was established to gain a better understanding of the volcanic setting & hydrothermal signatures of these VMS deposits and to assist in the development of exploration strategies. This paper briefly reviews the geological setting of the project area and describes regional sub-projects of the Initiative. Topics of these sub-projects include oxygen isotope mapping, trace element signatures, detailed geologic mapping, volcanic rock alteration, and mine stratigraphy & geologic structure.
Author : Peter Laznicka
Publisher : Springer Science & Business Media
Page : 960 pages
File Size : 50,6 Mb
Release : 2010-09-02
Category : Science
ISBN : 9783642124051
Metals in the earth's crust are very unevenly distributed and, traditionally, a small number of ore deposits, districts or countries have dominated the world supply and have influenced commodity prices. The importance of exceptionally large, or rich, deposits has greatly increased in the age of globalization when a small number of international corporations dominate the metals market, based on few very large ore deposits, practically anywhere in the world. Search for giant orebodies thus drives the exploration industry: not only the in-house teams of large internationals, but also hundreds of junior companies hoping to sell their significant discoveries to the "big boys". Geological characteristics of giant metallic deposits and their setting and the politico-economic constraints of access to and exploitation in prospective areas have been a "hot topic" in the past fifteen years, but the knowledge generated and published has been one-sided, scattered and fragmented. This is the first comprehensive book on the subject that provides body of solid facts rather than rapidly changing theories, written by author of the Empirical Metallogeny book series and founder of the Data Metallogenica visual knowledge system on mineral deposits of the world, who has had an almost 40 years long international academic and industrial experience. The book will provide abundant material for comparative research in metallogeny, practical information for the explorationists as to where to look for the "elephants", and some inspiration for commodity investors.
Author : Anonim
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 55,6 Mb
Release : 2024-06-30
Category : Electronic
ISBN : 9781100114897
Author : Paul H. Ribbe
Publisher : Unknown
Page : 302 pages
File Size : 40,8 Mb
Release : 1974
Category : Sulfides
ISBN : UCSD:31822012445128
Author : Stephen E. Kesler,Hiroshi Ohmoto
Publisher : Geological Society of America
Page : 350 pages
File Size : 49,9 Mb
Release : 2006-01-01
Category : Science
ISBN : 9780813711980
"The history of Earth's early atmosphere, hydrosphere, and biosphere, from Hadean through Proterozoic time, is one of geology's enduring puzzles. Ore deposits provide important insights into this history because they contain elements and minerals that are highly sensitive to the geochemical environment in which they form. Just what these minerals tell us remains a matter of considerable debate, however. When and how did life develop, an oxygen-rich atmosphere form, and sulfate dominate the ocean? This volume contains reports on these questions from both sides of the aisle for iron and manganese formations, uranium paleoplacers and hydrothermal deposits, and exhalative sulfides and oxides."--Publisher's website.
