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Автор(ы):O'Dea A., Taylor P.D.
Издание:The Trustees of the Natural History Museum, London, 2014 г., 418 стр., ISBN: 978-1-58834-502-8
Язык(и)Английский
A history of life in 100 fossils / История жизни в 100 ископаемых останках

The history of life is written in the rocks, or more precisely in the fossils contained within the rocks. Fossils are the remains of ancient animals and plants, as well as fungi and microbes, preserved by natural processes of burial and entombment. Without the existence of fossils it is doubtful whether Charles Darwin would ever have devised his theory of evolution by natural selection.

Издание 2
Автор(ы):Glazer A.M.
Издание:IOP Publishing, 2021 г., 273 стр., ISBN: 978-0-7503-3875-2
Язык(и)Английский
A journey into reciprocal space. A crystallographer’s perspective / Путешествие во взаимное пространство. Взгляд кристаллографа

The concept of reciprocal space is over 100 years old and has been of particular use for crystallographers to understand the patterns of spots seen on a detector when x-rays are diffracted by crystals. However, it has a much more general use, especially in the physics of the solid state. In order to understand what it is, how to construct it, and how to make use of it, it is first necessary to start with the so-called real or direct space and then show how reciprocal space is related to it. Direct space describes the objects we see around us, especially regarding crystals, their physical shapes and symmetries, and the arrangements of atoms within: the so-called crystal structure. eciprocal space, on the other hand, deals with the crystals as seen through their diffraction images. Indeed, crystallographers are accustomed to working backward from the diffraction images to the crystal structures, which we call crystal-structure solution. In solid-state physics, one usually works the other way, starting with reciprocal space to explain various solid-state properties, such as thermal and electrical phenomena. <...>

Автор(ы):Barker A.J.
Издание:CRC Press, 2014 г., 180 стр., ISBN: 978-1-315-77869-3
Язык(и)Английский
A key for identification of rock-forming minerals in thin-section / Ключ для идентификации породообразующих минералов в шлифе

Being able to accurately identify minerals in thin-section is an essential skill for any geologist, and is vital for the correct interpretation of rocks and their petrogenesis. It can be a particularly challenging prospect for students new to the subject. However, with a basic understanding of microscopy, petrology and optical mineralogy, coupled with some reference text books, it is soon possible to identify some of the major rock- forming minerals with confidence.

Издание:Geology Society of America, 2011 г., 49 стр., ISBN: 978-0-8137-2481-2
Язык(и)Английский
A new geological map of the Island of Syros (Aegean Sea, Greece): Implications for lithostratigraphy and structural history of the Cycladic Blueschist Unit / Новая геологическая карта острова Сирос (Эгейское море, Греция): значение для литостратиграфии

The Island of Syros (Cyclades, Greece) is a prime locality for the study of processes active in deep levels of orogens and is world famous for its exceptionally well preserved blueschist- to eclogite-facies lithologies. Syros Island was completely remapped at a scale of 1:25,000. Detailed lithostratigraphical observations and areawide, closely spaced structural measurements allowed a much more detailed depiction of the highly variable lithological assemblage, as well as of the complex structural evolution.

Том 39, Выпуск 4
Издание:Москва, 2005 г., 7 стр.
Язык(и)Английский
A New Record of an Azhdarchid (Pterosauria: Azhdarchidae) from the Upper Cretaceous of the Volga Region

A distal fragment of a radius of Azhdarchidae indet. from Upper Campanian (Upper Cretaceous) marine deposits of Saratov is described. The bone belongs to a large pterosaur, of about 4.3 m wing span. It differs from the radii of Azhdarcho, Montanazhdarcho, and cf. Quetzalcoatlus in the asymmetrical distal epi-physis and, in addition, from Montanazhdarcho and cf. Quetzalcoatlus in the absence of a pneumatic foramen on the posterior side. In its geographical and stratigraphical positions, this specimen is close to the azhdarchid Bogolubovia orientalis (3–4 m in wing span), known from a fragmentary cervical vertebra from the Campanian of the Penza Region, and may belong to this species.

Издание:Springer, 2014 г., 231 стр., ISBN: 978-81-322-1568-4
Язык(и)Английский
A Petrographic atlas of ophiolites. An example from the eastern India-Asia collision zone / Петрографический атлас офиолитов. Пример из восточной Индо-Азиатской колизионной зоны

The basic tenet of the plate tectonic paradigm is that a newly generated oceanic plate is subducted at a trench. However, it is widely accepted today that some material is not subducted, but is accreted to form an accretionary wedge or prism, within which there may be a preserved section of the oceanic crust/mantle, known as an ophiolite.

Автор(ы):Hollocher K.
Издание:CRC Press, 2014 г., 319 стр.
Язык(и)Русский
A pictorial guide to metamorphic rocks in the field / Практическое полевое руководство по метаморфическим горным породам

This book is a photographic introduction to metamorphic rocks. It is meant to be a survey of mostly typical metamorphic rocks, minerals, and structures as they appear in the field, and the metamorphic processes that make them. Its purpose is to help guide the eye of any student of geology to better see the geologic features in metamorphic rocks that might otherwise remain invisible or obscure. This book is a training tool, one of many, to help budding geologists of metamorphic rocks, young and old. <...>

Автор(ы):Bridges S., Robinson L.
Издание:Elsevier, 2020 г., 593 стр., ISBN: 978-0-12-821341-4
Язык(и)Английский
A practical handbook for drilling fluids processing / Практическое руководство по буровым растворам

This book concentrates on properly treating drilling fluid in the surface systems including a detailed discussion of the three required sections: suction, addition, and removal. The single, most important function of a drilling fluid is to prevent ablowout and to be able to control a kick if one does occur. For this reason, the first subject addressed in this book is the fluid processing required to handle a kick. For safety, in anticipation of a kick, the drilling fluid within the drill pipe should have the same density avoiding sag, settling, and uneven density in the annulus that could lead to a kick. To achieve these conditions, the surface system must be able to blend a sufficient quantity of homogeneous fluid. The agitation and blending of this fluid is discussed and proper calculations related to ensuring the proper properties 

Выпуск 55
Автор(ы):Xiaoling W., Yinxiu L.
Издание:Journal of Geochemical Exploration, 1995 г., 5 стр.
Язык(и)Английский
A rapid field analytical method for gold in geochemical exploration

A rapid field method for gold analysis in geochemical exploration has been developed. Cold extraction of Au, at room temperature, using a mixture of sodium bromide, sulphuric acid, hydrogen peroxide is performed; the technique has the advantage of avoiding the irritating odour of commonly used aqua regia digestion. Polyurethane foam is used to concentrate gold from solution. After desorption of Au using mixed reagents (0.5% Na2S03-NaCl solution at pH 8), two sequential procedures, depending on the concentration, are followed for the determination of gold. (1) A 1 mL portion of desorbed solution is used to form Au-TMK-DBS (Thio Micher's Ketone and dodecyl benzene sodium sulphonate) ternary complex. Concentrations below 20 ng/g Au are determined by visual colour comparison of the organic layer with a series of standards. (2) If the concentration is greater than 20 ng/g Au, a complexation reaction using the same reagents is followed by fibre-optic colorimetry. The method is rapid and simple, and the tiresome operation of ashing the foam is avoided. The limit of detection is 0.5 ng/g Au and eighty determinations can be made in one working day. The method could be used for rapid follow-up of rock sample or in situ drill core analyses. About 600 samples from 5 gold districts were tested by this method. The results are very satisfactory.


Автор(ы):Steve C.Brown
Издание:PGS Publishing, Linden Park, 2005 г., 16 стр.
Язык(и)Английский
A Review of the Geology and Mineralisation of the Alumbrera Porphyry Copper-Gold Deposit, Northwestern Argentina.

The Bajo de la Alumbrera porphyry copper-gold deposit is located within the northern Sierras Pampeanas in the eastern Andes Mountains of northwestern Argentina. It formed in a tectonically favourable location within a major arc-oblique wrench fault system, the Tucuman Transfer Zone. Initial andesitic volcanism deposited on crystalline Lower Palaeozoic basement, and subsequently emplaced dacitic subvolcanic stocks are directly related to eastward subduction of the Nazca oceanic plate beneath the western continental margin of South America. Structural preparation and shallowing of the angle of subduction of the Nazca plate -related to the arc-normal Juan Fernandez Ridge on that plate - probably aided the ascent of calc-alkaline oceanic arc-related magma into the Tucuman Transfer Zone.

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