Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
To succeed in writing a book about the age of mammals in Europe appears to be a difficult goal, especially in light of such brilliant precedents as The Age of Mammals by H. F. Osborn and The Age of Mammals by Bjo¨rn Kurten. In between this book and the 1971 version of The Age of Mammals there is not only the extraordinary scientific personality of Kurten but also thirty years of additional knowledge about fossil mammals and the environment in which they evolved.
In this book, management is defined as the process of generating plans and supervising their implementation. For a mineral resource, these plans relate to a strategy that determines how the resource is to be exploited. The process has two important aspects—one is the organizational setting within which it occurs, and the other is the set of techniques available for the analyses. Ideas in both areas have evolved rapidly in recent years and this book presents an authoritative review of the current state of the art.
NICHOLSON, K., HEIN, J. R, BCTHN, B. & DASGUPTA, S. Precambrian to Modern manganese mineralization: changes in ore type and depositional environment
Review
RoY, S. Genetic diversity of manganese deposition in the terrestrial geological record Precambrian deposits
GLASBY, G. P. Fractionation of manganese from iron in Archaean and Proterozoic sedimentary ores
KULIK, D. A. & KORZHNEV, M. N. Lithological and geochemical evidence of Fe and Mn pathways during deposition of lower Proterozoic Banded Iron Formation in the Krivoy Rog Basin (Ukraine)
BOHN, B. & STANISTREET, I. G. Insight into the enigma of Neoproterozoic manganese and iron formations from the perspective of supercontinental break-up and glaciation
The geological structure of the Tunka Goltsy (the Tunka Range) of the East Sayany is characterized by a complex nappe-fold structure, composed mainly of Paleozoic terrigenous and carbonate rocks and their metamorphosed analogues [1–3]. It is generally recognized that the nappe-fold structure of the East Sa-yany, including its southeastern segment, regarded as the Tunka terrain [3] or Ilchirskaya zone [4], formed in the Ordovician as a result of collision between the Tuva–Mongolian microcontinent and the Siberian continent. As referred to in [5], the Ordovician–Mid-dle Paleozoic deformations over the entire vast territory of Central Asia, from the Olkhon zone of the Pribaikalie to the North Kazakhstan, were manifested as a result of the closing of the oceanic basin and the subsequent collision between the Kazakhstan– Baikalian complex continent (including the Tuva– Mongolian microcontinent) and the Siberian continent. In the Ordovician the Olkhon nappe-overthrust zone was formed along the southeastern framework of the Siberian Craton. In addition, the metamorphism was manifested over the entire vast territory of the East Sayany that could probably be connected with nappe formation. In the Late Ordovician–Silurian, the oblique slip-thrust structures, magmatism, and meta-morphism were manifested in the Sangilen highlands and Tuva. Later, the deformations continued. In the Late Devonian–Early Carboniferous, the dextral strike-slip fault Charysh–Terektinskaya zone was formed; in the Late Carboniferous, the Kurayskaya and Kuznetsko–Teletsko–Bashkaus sinistral strike-slip shear zones were formed.
An Ultramafic Lift at the Mid-Atlantic Ridge: Successive Stages of Magmatism in Serpentinized Peridotites from the 15°N Region. Mathilde Cannat and lohn F Casey
Gabbroie Dikelets in Serpentinized Peridotites from the Mid-Atlanti Ridge at 23°20'N P. Tartarotti, M. Cannat and C. Me el
Mafic and Ultramafic Intrusions into Upper Mantle Peridotites from Fast Spreading Centers of the Easter Micropiate (South East Pacific) M. Constantin, R. Hekinian, D. Ackermand and P. Stoffers
Part I: State of the Mantle: Properties and Dynamic Evolution 1 Long-Wavelength Mantle Structure: Geophysical Constraints and Dynamical Models Maxwell L. Rudolph, Diogo L. Lourenço, Pritwiraj Moulik, and Vedran Lekić 2 Experimental Deformation of Lower Mantle Rocks and Minerals Lowell Miyagi 3 Seismic Wave Velocities in Earth’s Mantle from Mineral Elasticity Johannes Buchen 4 From Mantle Convection to Seismic Observations: Quantifying the Uncertainties Related to Anelasticity Bernhard S. A. Schuberth and Tobias Bigalke
As a result of an extensive program of structural mapping in the ultramafic section of the Oman ophiolite, maps of mantle flow below the spreading center of origin have been drawn. They reveal a mantle diapiric system in which the uppermost mantle flow diverges from diapirs 10-15 km across, which could have been spaced by an average distance of 50 km. Some diapirs could have been located off-axis.
Although plate tectonics and mantle plumes were introduced to geology at the same time in the 1960s and early 1970s by J. Tuzo Wilson and Jason Morgan, unlike plate tectonics, which rapidly collected supporters from the Earth S c i e n c e community, mantle plumes took a back seat. Yes, Hawaii was an example of a mantle plume and as oceanic plates moved over plumes they leave hotspot tracks. The prevailing attitude was one of "this is fine, but let's now move on to plate tectonics where the real excitement is." For twenty years geoscientists focussed most of their efforts on trying to understand plate tectonics and document examples of it in the g e o l o g i c record. It w a s not until the late 1980s that scientists turned some of their attention to mantle plumes, and indeed during the 1990s, when mantle plumes really "became of age", publications dealing with mantle plumes increased exponentially. Why the long period of dormancy for mantle plumes? I believe it was simply because geoscientists were overwhelmed by plate tectonics-a band wagon effect that influenced all of the Earth Sciences.
In 1848, John Wiley & Sons, Inc., was beginning to shift from being primarily a literary publisher to being a scientific, technical, and engineering publisher. This shift was the first of many Wiley has made over the years as it has constantly adapted to meet the unique needs of each new generation. This was also the year Wiley published one of its most enduring and notable titles: James D. Dana’s Manual of Mineralogy, including Observations on Mines, Rocks, Reduction of Ores, and the Application of the Science to the Arts. Over the years, it too has continually adapted to meet the changing needs of all who use it. Now in its twenty-third edition, the Manual of Mineral Science remains the standard for teaching introductory mineralogy/mineral science. <...>