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The roots of sedimentology and stratigraphy extend back to the 16th century; however, these disciplines are still growing and changing. Geologists continue to "fine tune" sedimentologic and stratigraphic concepts through a variety of research avenues and by using an array of increasingly sophisticated research tools. T he result is a continuous outpouring of fresh data and new ideas. In fact, it is becoming increasingly difficult to keep abreast of the flood of new information appearing in the geological literature. A glance through recent issues of a well-known sedimentology journal reveals important new papers on sedimentation and tectonics, depositional systems, carbonates, biosedimentology, diageneis, provenance, geochemistry, sediment transport and sedimentary structures, stratigraphic architecture, chronostratigraphy, numerical modeling, paleoclimatology, sequence stratigraphy, and basin analysis-to name but a few research areas. <...>
This book has its roots in the year 1970, when we first met in the carbonates course in Bermuda, Fred as an instructor and John as a student. Over the intervening 20 years, we have been active in research on the geochemistry of sedimentary carbonates in both the field and laboratory and from a theoretical standpoint. During this period, an immense amount of information has been acquired in carbonate geochemistry resulting in a voluminous journal literature and many books on specialized topics.
Статьи, авторами которых являются представители различных геологических и геохимических школ, знакомят читателей с закономерностями формирования состава органического вещества в различных фациальных и геологических обстановках и с последующими его преобразованиями. Ряд статей посвящен взаимодействию органического вещества с минеральной составляющей осадков. Значительное внимание уделено оценке роли органического вещества в нефтегазообразовании.
В сборнике рассматриваются общие проблемы седименто- и литогенеза, критерии разграничения мелководных и глубоководных осадков прошлого, специфика геосинклинального осадкообразования, условия образования красноцветных формаций. Часть работы посвящена рассмотрению процессов осадочной породообразования в регионах СССР. Значительное внимание уделяется общим и частным проблемам осадочного рудогенеза – разбираются условия формирования руд марганца, фосфора, редких металлов
С учетом современных данных по изучению океана на основе тектоники литосферных плит изложены проблемы физической седиментологии с акцентом на процессы образования тел осадочной оболочки разной структурной сложности. Рассмотрена актуалистическая база физической седиментологии, приведены ее модели, дан анализ механизмов трех классов процессов, составляющих основу седиментологии: грануло-, страто- и циклоседиментогенез. Для научных работников — геологов, тектонистов, стратиграфов, морских геологов, связанных с изучением осадочных пород и с поисками осадочных месторождений.
The term “provenance” originates from the Latin word “provenire,” meaning to originate. Although commonly used to indicate source or parent rock from which sediments were generated, the term “provenance” actually encompasses all factors related to sediment production, with “specific reference to the composition of the parent rocks as well as the physiography and climate of the source area” (Weltje and Eynatten, 2004). Sedimentary provenance data play a critical role in assessing palaeogeographic reconstructions, in constraining lateral displacements in orogens, in characterizing crust that is no longer exposed, in mapping depositional systems, in subsurface correlation, and in predicting reservoir quality (Haughton et al., 1991; Weltje and Eynatten, 2004; Garzanti et al., 2014; Bhattacharya et al., 2016). <...>
This cutting-edge summary combines ideas from several sub-disciplines, including geology, geomorphology, oceanography and geochemistry, to provide an integrated view of Earth surface dynamics in terms of sediment generation, transport and deposition. Introducing a global view of fundamental concepts underpinning source-to-sink studies, it provides an analysis of the component segments which make up sediment routing systems. The functioning of sediment routing systems is illustrated through calculations of denudation and sedimentation as well as the response to external drivers; with the final sections focusing on the stratigraphic record of sediment routing systems. Containing quantitative solutions to a wide range of problems in Earth surface dynamics, this book is suitable for graduate students as well as academic and professional researchers. philip a. allen is Emeritus Professor of Sedimentary Geology at Imperial College London and a process-oriented Earth scientist with a particular interest in the interactions and feedbacks between the solid Earth and its ‘exosphere’ through the critical interface of the Earth’s surface. He has received the Royal Society Wolfson Research Merit Award for 2006 to 2011 and the Lyell Medal from the Geological Society of London in 2007. He served on the Council of the Geological Society from 2008 to 2012, and was Secretary of the Science Committee from 2009 to 2012.
The noun sediment comes to the English language from the Latin root sedimentum, meaning settling or sinking down,aform ofthe verb sedere,to sit orsettle. In earth and environmental sciences, sediment has a wide context that includes many forms of organic and mineral matter. In Part 1 we look more deeply at the origins of the sediment that occurs on and under the surface of the solid planets and which may be used to infer past environmental conditions and changes. Sediment accumulations may be grandly viewed as the great stratal archive of past surface environments, or more basically as‘dirt’. There has been sediment on the surface of the Earth since the Archaean, with the oldest known sediment grains dating from at least 4.4Ga (Part 1 Fig. 1). Sediment also mantles the surface of many other planets and their satellites, notably Mars, Venus and Saturn’s moon, Titan. <...>
This book arises from a two day international conference held at the Geological Society of London in November 1998. The meeting was organized with the purpose of bringing together sedimentologists, geomorphologists, archaeologists, environmental scientists and environmental managers to discuss recent research and topical issues relating to the interactions between natural processes, morphology and human activities in coastal and estuarine environments. More than 200 delegates, from 16 countries, attended the meeting over the course of the two days, stimulating lively discussion both about basic scientific issues and management implications. The meeting was sponsored by the British Sedimentological Research Group, the British Geomorphological Research Group, and English Heritage, and was also supported by the Environmental Sedimentology Committee of the International Association of Sedimentologists. The editors would like to thank these organizations, together with staff at the Geological Society and numerous daily helpers, especially postgraduate students and others from the University of Reading, for their generous assistance in making the meeting a great success
Sedimentary rocks form at low temperatures and pressures at the surface of Earth owing to deposition by water, wind, or ice. By contrast, igneous and metamorphic rocks form mainly below Earth’s surface where temperatures and pressures may be orders of magnitude higher than those at the surface, although volcanic rocks eventually cool at the surface. These fundamental differences in the origin of rocks lead to differences in physical and chemical characteristics that distinguish one kind of rock from another. Sedimentary rocks are characterized particularly by the presence of layers, although layers are also present in some volcanic and metamorphic rocks, and by distinctive textures and structures. Many sedimentary rocks are also distinguished from igneous and metamorphic rocks by their mineral and chemical compositions and fossil content.