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Radiogenic Isotope Geochemistry of Sedimentary and Aquatic Systems
This book takes the reader through the complete weathering cycle, from the continents to the oceans, from the perspective of modern radiogenic isotope geochemistry. Topics include surface weathering, fluvial processes, environmental pollution, oceanography and paleoceanography, sedimentary mineral diagenesis and radiometric dating, thus bridging the gap between processes acting on the Earth today and the geological record. Extensive use is made of carefully selected case studies, both pioneering and state-of-the-art. This book enables the reader to critically assess previous work from the literature as well as encouraging already established researchers to apply the most modern isotopic approaches to their particular field of study.
Born of Ice and Fire
An exploration of how the Cryogenian Period, when our planet was covered in ice for millions of years, created today's remarkable biodiversity More than half a billion years ago, our world was completely covered by glaciers, a "Snowball Earth" that persisted for millions of years. Incredibly, this unimaginable cold led to the remarkable diversification of life on earth known as the Cambrian explosion. With a geologist's eye and a knack for storytelling, Graham Shields explores when and how such inhospitable conditions enabled animals to evolve, radiate, and diversify into our earliest ancestors. This journey navigates the wild swings between hot and cold climates, oxygenation and asphyxiation, biological radiations and extinctions, asking how such instability relates to grander forces that brought our planet to its modern state. Shields guides readers through evidence found in the Australian outback, Mongolia, Scotland, and other locales, revealing how geologists can trace glaciation, the atmosphere, oceans, mountain building, and more through the earth's rocks, providing a comprehensive theory of how life evolved and diversified.
The Geological Record of Neoproterozoic Glaciations
In recent years, interest in Neoproterozoic glaciations has grown as their pivotal role in Earth system evolution has become increasingly clear. One of the main goals of the IGCP Project number 512 was to produce a synthesis of newly available information on Neoproterozoic successions worldwide. This Memoir consists of a series of overview chapters followed by site-specific chapters. The overviews cover key topics including the history of research on Neoproterozoic glaciations, identification of glacial deposits, chemostratigraphic techniques and datasets, palaeomagnetism, biostratigraphy, geochronology and climate modelling. The site specific chapters include reviews of the history of research on these rocks and up-to-date syntheses of the structural framework, tectonic setting, palaeomagnetic & geochronological constraints, physical, biological, and chemical stratigraphy, and descriptions of the glaciogenic and associated strata, including economic deposits.
The Nature of Life and Its Potential to Survive
This book looks at the persistence of life and how difficult it would be to annihilate life, especially a species as successful as humanity. The idea that life in general is fragile is challenged by the hardiness of microbes, which shows that astrobiology on exoplanets and other satellites must be robust and plentiful. Microbes have adapted to virtually every niche on the planet, from the deep, hot biosphere, to the frigid heights of the upper troposphere. Life, it seems, is almost indestructible. The chapters in this work examine the various scenarios that might lead to the extermination of life, and why they will almost always fail. Life's highly adaptive nature ensures that it will cling on no matter how difficult the circumstances. Scientists are increasingly probing and questioning life's true limits in, on and above the Earth, and how these limits could be pushed elsewhere in the universe. This investigation puts life in its true astronomical context, with the reader taken on a journey to illustrate life's potential and perseverance.
Reading the Archive of Earth’s Oxygenation
Earth’s present-day environments are the outcome of a 4.5 billion year period of evolution reflecting the interaction of global-scale geological and biological processes punctuated by several extraordinary events and episodes that perturbed the entire Earth system. One of the earliest and arguably greatest of these events was a substantial increase (orders of magnitude) in the atmospheric oxygen abundance, sometimes referred to as the Great Oxidation Event. Volume 1: The Palaeoproterozoic of Fennoscandia as Context for the Fennoscandian Arctic Russia - Drilling Earth Project describes the implementation of the FAR-DEEP drilling project in Arctic Russia. It summarises the knowledge of more ...
Reclaiming Communist Philosophy
This book is unique in its utilization of the natural sciences to explain and illustrate key concepts of communist philosophy. In its recapitulation of the spirit of Engels’s unfinished manuscript, The Dialectics of Nature, it relies on the physical sciences developed since Engels’s time to reaffirm the validity of materialist dialectics, a point which is more easily made in the context of natural phenomena than it is in social phenomena. The basic philosophical tenets underlying Communist ideology are all supported by the natural sciences. The book is situated within the Marxist-Leninist-Maoist tradition. Its overarching theme is the need to reclaim our most fundamental weapon of that tradition—it’s methodology or philosophy—which has been vitiated or even scrapped by well-intentioned revolutionaries throughout the 20th century. In particular, some of Mao’s philosophical formulations are found to be erroneous and in opposition to his practice. With the rapidly accelerating deterioration of the global capitalist order in progress since 2007, the urgency of this reclamation cannot be over-emphasized.
Earth's Deep History
Mammoths and dinosaurs, tropical forests in northern Europe and North America, worldwide ice ages, continents colliding and splitting apart, comets and asteroids crashing catastrophically onto the Earth - these are just some of the surprising features of the eventful history of our planet, stretched out over several billion years. But how was it all discovered, how was the evidence for the Earth’s long history collected and interpreted, and what sorts of people put together this reconstruction of a deep past that no human beings could ever have witnessed? In Earth’s Deep History, Martin J. S. Rudwick tells the gripping story of the gradual realization that the Earth’s history has not only been unimaginably long but also astonishingly eventful in utterly unexpected ways. Rudwick, the world’s premier historian of the Earth sciences, is the first to make the story of the discovery of the Earth’s deep history attractively accessible to readers without prior knowledge of either the history or the science, and in so doing he reveals why it matters to us today.
Human Behavioral Ecology and Coastal Environments
Examples of a research approach that sheds light on coastal societies in the past In this volume, contributors apply human behavioral ecology theoretical models to coastal environments around the globe and to the use of coastal resources by past human societies. Evidence demonstrates that coastlines and islands are dynamic environments that were important in early human migrations, and this volume shows how researchers can gain insights about human behavior in these settings through its critical regional reviews and detailed local case studies. The volume begins by introducing the importance of theory in the reconstruction of human behavior and provides examples of traditional foraging model...
The Ends of the World
Apocalypse, now? Death by fire, ice, poison gas, suffocation, asteroid. At five moments through history life on Earth was dragged to the very edge of extinction. Now, armed with revolutionary technology, scientists are uncovering clues about what caused these catastrophes. Deep-diving into past worlds of dragonflies the size of seagulls and fishes with guillotines for mouths, they explore how – against all the odds – life survived and what these ominous chapters can tell us about our future.
