The inferred positions of global paleoshorelines through the 240 million years of the Mesozoic and Cenozoic are presented within this atlas. Thirty-one maps, generally corresponding to stratigraphic stages, provide a snapshot of the continents and their shorelines at approximately 8 million year intervals. The maps provide a representation of the gross changes in the distribution of land and sea throughout the Mesozoic and Cenozoic plotted on Mollweide projections of paleocontinental reconstruction. They do not distinguish between well and poorly defined shorelines, but the information sources are set out in a bibliography numbering more than 2000 primary paleographic references. This is a global compilation that presents the first attempt at delineating global shorelines at stage level, and which represents many years of work sponsored by British Petroleum International (BPI), and work by BPI themselves between 1981 and 1987.

Finding Time for the Old Stone Age explores a century of colourful debate over the age of our earliest ancestors. In the mid nineteenth century curious stone implements were found alongside the bones of extinct animals. Humans were evidently more ancient than had been supposed - but just how old were they? There were several clocks for Stone-Age (or Palaeolithic) time, and it would prove difficult to synchronize them. Conflicting timescales were drawn from the fields of geology, palaeontology, anthropology, and archaeology. Anne O'Connor draws on a wealth of lively, personal correspondence to explain the nature of these arguments. The trail leads from Britain to Continental Europe, Africa, and Asia, and extends beyond the world of professors, museum keepers, and officers of the Geological Survey: wine sellers, diamond merchants, papermakers, and clerks also proposed timescales for the Palaeolithic. This book brings their stories to light for the first time - stories that offer an intriguing insight into how knowledge was built up about the ancient British past.

This book contains a selection of papers from the International Military Geology and Geography Conference, held at the U.S. Military Academy, West Point, New York in June 2003. Studies in Military Geography and Geology expands a series of recent publications originating from conferences and symposia on military geology that began in 1994. The 25 contributions address a broad range of military topics ranging from the strategic perspective, through analyses of historical battles at the operational and tactical levels, to the use of advanced technologies applied to present-day military problems.

The marine Eocene-Oligocene transition of 34 million years ago was a critical turning point in Earth's climatic history, when the warm, high-diversity "greenhouse" world of the early Eocene ceded to the glacial, "icehouse" conditions of the early Oligocene. This book surveys the advances in stratigraphic and paleontological research and isotopic analysis made since 1989 in regard to marine deposits around the world. In particular, it summarizes the high-resolution details of the so-called doubthouse interval (roughly 45 to 34 million years ago), which is critical to testing climatic and evolutionary hypotheses about the Eocene deterioration.

The authors' goals are to discuss the latest information concerning climatic and oceanographic change associated with this transition and to examine geographic and taxonomic patterns in biotic turnover that provide clues about where, when, and how fast these environmental changes happened. They address a range of topics, including the tectonic and paleogeographic setting of the Paleogene; specific issues related to the stratigraphy of shelf deposits; advances in recognizing and correlating boundary sections; trends in the expression of climate change; and patterns of faunal and floral turnover. In the process, they produce a valuable synthesis of patterns of change by latitude and environment.

This third edition of Reconstructing Quaternary Environments has been completely revised and updated to provide a new account of the history and scale of environmental changes during the Quaternary. The evidence is extremely diverse ranging from landforms and sediments to fossil assemblages and geochemical data, and includes new data from terrestrial, marine and ice-core records. Dating methods are described and evaluated, while the principles and practices of Quaternary stratigraphy are also discussed. The volume concludes with a new chapter which considers some of the key questions about the nature, causes and consequences of global climatic and environmental change over a range of temporal scales. This synthesis builds on the methods and approaches described earlier in the book to show how a number of exciting ideas that have emerged over the last two decades are providing new insights into the operation of the global earth-ocean-atmosphere system, and are now central to many areas of contemporary Quaternary research.

This comprehensive and dynamic textbook is richly illustrated throughout with full-colour figures and photographs. The book will be of interest to undergraduates, postgraduates and professionals in Earth Science, Environmental Science, Physical Geography, Geology, Botany, Zoology, Ecology, Archaeology and Anthropology

Table of Contents

1. The Quaternary record 2. Geomorphological evidence 3. Lithological evidence 4. Biological evidence 5. Dating methods 6. Approaches to Quaternary stratigraphy and correlation 7. Global environmental change during the Quaternary

Mineralogical-sedimentological and geochemical investigations in combination with pollen data of a 12.7-m-long dated sediment core from Lake Silvana, SE Brazil, permit the reconstruction of the climatic history over the past 10,000 years. The lowermost section (I) reflects a coarse paleosol-type sediment with abundant plant debris and rootlets; pollen indicates grassland vegetation. Section II represents fine-grained lake sediments; pollen indicates a savanna-like vegetation. Section III represents a pollen-free, coarse-grained allogenic sediment deposited under high transportation energy (increased precipitation). Section IV, a greenish sequence with increasing C content towards the top, has a pollen spectrum of present-day vegetation (semideciduous forest). The different sediment sections show a connection with erosional phases in the catchment of the lake, based on mineralogy and geochemistry, which are a response to climate development.

Steep crustal-scale faults, having their origins in the Late Archean and Early Proterozoic and trending NE-SW, which define the fundamental block lithospheric structure of the North American craton, are seen from geological and geophysical evidence to continue far into the interior of the Late Proterozoic-Phanerozoic Canadian Cordilleran mobile megabelt. This suggests that variously reworked ex-cratonic basement blocks underlie much of the Cordillera. The western edge of the modern craton is probably near the Rocky Mountain-Omineca belt boundary; the Rocky Mountain fold-and-thrust belt on the east side of the Cordillera is evidently rootless and overlies the undisturbed cratonic basement. Phanerozoic differences between the Cordilleran tectonic belts, resulting from a long, dissimilar, multi-cycle history of waxing and waning orogenesis apparent from the rock record, lie chiefly in the degree of indigenous tectonic remobilization and reworking of the ancient crust.

In the last ten to fifteen years there has been a movement to break down old disciplinary boundaries in the geosciences in order to develop a more unified view of the earth as an integrated system. Much of this effort has been stimulated by developments in the atmosphere and ocean sciences that study the effect of humanity's impact on the environment. However, solid earth sciences also have a role to play in the Earth System Science/Global Change Programs but efforts to integrate solid and fluid elements of the geosciences have not progressed as rapidly as other elements of these programs. In this book, the authors present examples of how integrating solid earth and climate studies can lead to better understanding of both disciplines. The focus on the role of tectonic boundary conditions for paleoclimate reconstructions. Chapters presenting background material on the impact of tectonic changes on climate will be followed by individual chapters on the "uncertainties" - with respect to orography, geography, timing of ocean gatewary closures, bathymetry, and CO[2 levels in the atmosphere. The book developed from a discussion at the Geodynamics Committee of the Board on Earth Sciences and Resources of the United States National Academy of Sciences.

Presenting new data on the now classical aspects of Gondwana geology, this work also highlights the increasing international interest as to how the Gondwana supercontinent was assembled. The book is organized according to three themes: assembly, evolution and dispersal, containing 57 papers of specialists in the area.
Assembly: Late Proterozoic-Early Palaeozoic mobile belts of Gondwana, South America, Africa & Australo-Antarctica.
Evolution: Detailed palynological & palaeontological research of Late Palaeozoic- Mesozoic palaeoclimate.
Dispersal: Novel approach to predicting past plate motions followed by series of papers covering the break-up history of Gondwana;

The NE Pacific Ocean is considered the birthplace of many fundamental ideas for modern plate tectonics theory. In this book the orogenic belts of this region are discussed in a single, internally consistent tectonic concept. Geological information is considered the most reliable. Geophysical models are tested for compatibility with observable geological data. The new concept avoids force-fitting interpretations to preconceived assumptions regarding accreted far-traveled terranes in the Cordillera and continental-oceanic plate interactions in the entire region.

Chemical modifications of supracrustal materials have occurred at various times in the Earth's history. This reference book gives an overlook over themost recent findings of isotope research in the sedimentary environment. The reader, interested in the diagnetic evolution of sediments, can use the book as a tool for the understanding of mineral-water interactions in the supracrustal level.

K.R. McClay Department of Geology, Royal Holloway and Bedford New College, University of London, Egham, Surrey, England TW20 OEX. Since the first Thrust and Nappe Tectonics Conference in London in 1979 (McClay & Price 1981), and the Toulouse Meeting on Thrusting and Deformation in 1984 (Platt et al. 1986) there have been considerable advances in the study of thrust systems incorporating new field observations, conceptual models, mechanical models, analogue and numerical simulations, together with geophysical studies of thrust belts. Thrust Tectonics 1990 was an International Conference convened by the editor and held at Royal Holloway and Bedford New College, University of London, Egham Surrey, from April 4th until April 7th 1990. There were one hundred and seventy participants from all continents except South America. The conference was generously sponsored by Brasoil U.K. Limited, BP Exploration, Chevron U.K. Limited, Clyde Petroleum, Enterprise Oil, Esso Exploration and Production UK Limited, and Shell U.K. Exploration and Production. One hundred and five contributions were presented at the meeting, - seventy six oral presentations (together with poster displays) and an additional twenty nine posters without oral presentation (McClay 1990, conference abstract volume).

A beautiful little guide to one of life's simple pleasures - pebble spotting. Where science meets mindfulness. Learn to appreciate their beauty, discover the amazing journey that brought them to you, search for the rare ones. Leave no stone unturned. Turn a day on the beach or a seaside holiday stroll into a treasure hunt with this lovely little guide to identifying pebbles. Pebble spotting is one of life's simple joys. There's nothing quite like searching the rocks on a beach until that special one catches your eye - a perfect shape, a gorgeous colour, an intriguing pattern. But what is it? Use this beautifully illustrated little guide to find out, and to discover your pebble's fascinating life story and secrets. It could be even more special than you thought... Geologist and passionate pebble spotter Clive Mitchell has created a charming and wonderfully browsable book that is a perfect companion to a day out or holiday, or an idle moment at home. This book contains entries on 40 different types of pebble, complete with detailed facts about the composite rock's structure and where to find them, with examples including: Flint Feldspar veins Spotted slates Serpentinite Granite ovoids The rare rhomb porphyry - the holy grail of pebble hunting The book includes a space to ruminate on your own findings, taking note of the treasures that you pick up along the way and discovering the secrets of the stones beneath your feet. The Pebble Spotter's Guide is the perfect introduction to everything you didn't know there was to know about the mindful pleasure of pebble spotting and the wonder of pebbles. Simply sit on a beach or next to a stream for 10 minutes and find amazing treasures at your feet; there is much to discover.

Life has shaped the Earth, and the Earth has moulded the history of life. That history, the co-evolution of our ancestors and their horne, has much to teach us about our place on the planet today. We are part of the fabric of the biosphere. As we change that fabric we would be wise to understand how our horne was built. Our planet is neither a hotel nor a colony. It is not a place which life briefly inhabits during a transient occupation. Instead, it is our horne, designed by the deeds of our ancestors and suited to our own needs. The history of life on Earth is held in the geological record, which is composed of the rocks, water and air that are available for study on the planet's surface. These rocks, the oceans and the atmosphere are not simply stores of information for the excitement of fossil hunters and geochemists, or resources to exploit without thought. Their cre ation and continued existence form an integral part of the development and management of the Earth as the horne of life."

A study on the Bellingwe Greenstone Belt, presenting the stratigraphy of the belt, its structure and tectonic setting, the sedimentology of what may be a rift basin, the geochemistry of the freshest Archaean komatiites yet found, and models of the evolution of the region.
Contents: Stratigraphy of the Belingwe Greenstone Belt: Complexity of the tectonic setting; Structure and metamorphism of the Belingwe Greenstone Belt and adjacent granite-gneiss terrain: The tectonic evolution of an Archaean craton; The Mtchinge Group in the West: Andesite, basalts, komatiites and sediments of the Ilokonui, Bend and Koodoovale Formations; Sedimentology of the Brooklands Formation, Zimbabwe: Development of an Archaean greenstone belt in a rapidly rifted graben;

Paleoceanographic conditions which led to the formation of the "mid"-cretaceous triad along the northern Tethys margin are elucidated. In the first part, the evolution of this sequence is traced from the demise of the platform to the return of the detritus dominated deposition. The second part includes a discussion of the reconstructed paleoceanographic and tectonic variables, their possible interaction as well as their influence on sediment properties.

A gripping history of the polar continent, from the great discoveries of the nineteenth century to modern scientific breakthroughs Antarctica, the ice kingdom hosting the South Pole, looms large in the human imagination. The secrets of this vast frozen desert have long tempted explorers, but its brutal climate and glacial shores notoriously resist human intrusion. Land of Wondrous Cold tells a gripping story of the pioneering nineteenth-century voyages, when British, French, and American commanders raced to penetrate Antarctica's glacial rim for unknown lands beyond. These intrepid Victorian explorers-James Ross, Dumont D'Urville, and Charles Wilkes-laid the foundation for our current understanding of Terra Australis Incognita. Today, the white continent poses new challenges, as scientists race to uncover Earth's climate history, which is recorded in the south polar ice and ocean floor, and to monitor the increasing instability of the Antarctic ice cap, which threatens to inundate coastal cities worldwide. Interweaving the breakthrough research of the modern Ocean Drilling Program with the dramatic discovery tales of its Victorian forerunners, Gillen D'Arcy Wood describes Antarctica's role in a planetary drama of plate tectonics, climate change, and species evolution stretching back more than thirty million years. An original, multifaceted portrait of the polar continent emerges, illuminating our profound connection to Antarctica in its past, present, and future incarnations. A deep-time history of monumental scale, Land of Wondrous Cold brings the remotest of worlds within close reach-an Antarctica vital to both planetary history and human fortunes.

First published in 1977, this book shows the positions of the major continental areas during the past 220 million years as four series of computer-drawn maps. The maps have been drawn for the present day, 10 and 20 million years ago, then at 20-million-year intervals back to 220 million years. All the maps are based on quantitative geophysical or topographic information: paleomagnetic pole positions, ocean floor magnetic anomalies, and best fits of the continental margins. Mercator, north polar and south polar sterographic, and Lambert equal-area maps of each selected time interval are provided. Many interesting problems in the Earth Sciences are global; they need to be seen in a proper global setting. The maps provide such a framework on which a very wide range of geological information may be plotted. Problems in fields as widely separated as palenontology, stratigraphy, geochemistry and tectonics may usefully be displayed on these maps.

Using newly declassified documents, this book explores why U.S. military leaders after World War II sought to monitor the far north and understand the physical environment of Greenland, a crucial territory of Denmark. It reveals a fascinating yet little-known realm of Cold War intrigue and a delicate diplomatic duet between a smaller state and a superpower amid a time of intense global pressures. Written by scholars in Denmark and the United States, this book explores many compelling topics. What led to the creation of the U.S. Thule Air Base in Greenland, one of the world's largest, and why did the U.S. build a nuclear-powered city under Greenland's ice cap? How did Danish concern about sovereignty shape scientific research programs in Greenland? Also explored here: why did Denmark's most famous scientist, Inge Lehmann, became involved in research in Greenland, and what international reverberations resulted from the crash of a U.S. B-52 bomber carrying four nuclear weapons near Thule in January 1968?

'What are we going to do with a parcel of old stones?' wrote the director of an African museum a century and a half ago, when one of my ancestors presented him with a splendid collection of fossils of mammal-like reptiles. Old stones, however intriguing, are difficult to interpret, dusty, and do not fit well in the neatly ordered contents of a house of learning. Archaean geology, which is the study of the Earth's history in the period from after 9 the end of planetary accretion (4.5-4.4 x 10 years ago) up to the beginning 9 of the Proterozoic (2.5 x 10 years ago) is much the same - a parcel of old stones seemingly impossible to understand. Yet these stones contain the history of our origins: they can tell us a story that is interesting not just to the geologist (for whom this book is primarily written) but instead addresses the human condition in general.

Arguably the best work to date in the history of geology.--David R. Oldroyd, Science After a superficial first glance, most readers of good will and broad knowledge might dismiss [this book] as being too much about too little. They would be making one of the biggest mistakes in their intellectual lives. . . . [It] could become one of our century's key documents in understanding science and its history.--Stephen Jay Gould, New York Review of Books Surely one of the most important studies in the history of science of recent years, and arguably the best work to date in the history of geology.--David R. Oldroyd, Science

The little-known history of how the Sahara was transformed from a green and fertile land into the largest hot desert in the world The Sahara is the largest hot desert in the world, equal in size to China or the United States. Yet, this arid expanse was once a verdant, pleasant land, fed by rivers and lakes. The Sahara sustained abundant plant and animal life, such as Nile perch, turtles, crocodiles, and hippos, and attracted prehistoric hunters and herders. What transformed this land of lakes into a sea of sands? When the Sahara Was Green describes the remarkable history of Earth's greatest desert-including why its climate changed, the impact this had on human populations, and how scientists uncovered the evidence for these extraordinary events. From the Sahara's origins as savanna woodland and grassland to its current arid incarnation, Martin Williams takes us on a vivid journey through time. He describes how the desert's ancient rocks were first fashioned, how dinosaurs roamed freely across the land, and how it was later covered in tall trees. Along the way, Williams addresses many questions: Why was the Sahara previously much wetter, and will it be so again? Did humans contribute to its desertification? What was the impact of extreme climatic episodes-such as prolonged droughts-upon the Sahara's geology, ecology, and inhabitants? Williams also shows how plants, animals, and humans have adapted to the Sahara and what lessons we might learn for living in harmony with the harshest, driest conditions in an ever-changing global environment. A valuable look at how an iconic region has changed over millions of years, When the Sahara Was Green reveals the desert's surprising past to reflect on its present, as well as its possible future.

Studies of the magnetic anomalies paralleling ocean ridges have furnished partisans of continental drift with decisive arguments. To take stock of this important question, my colleague Thellier and I decided in the early summer of 1967 to make it the subject of the annual seminar on Earth physics for the school year 1967-68. Although research was still developing rapidly, the General Assembly of the International Union of Geodesy and Geophysics held in Switzerland in September, particularly some of the meetings in Zurich under the auspices of the International Committee for the Upper Mantle, appeared to confirm that we had made no important omissions. At the con clusion of the seminar, where I had been responsible for most of the lectures, I resolved to write the present volume for the non-specialized scientific reader. The project turned out to be a good deal more ambitious than I had thought. It is quite an undertaking nowadays to try to survey a rapidly growing subject, first of all because of the difficulty of gathering material; publication delays are now nearing one year, with the result that specialists communicate largely through a selective distribution of reports, as well as verbally in frequent colloquia. I warmly thank those who helped me in getting unpublished literature, especially Xavier Le Pichon. Even so, some essential work came to my knowledge only lately."

This third edition of Reconstructing Quaternary Environments has been completely revised and updated to provide a new account of the history and scale of environmental changes during the Quaternary. The evidence is extremely diverse ranging from landforms and sediments to fossil assemblages and geochemical data, and includes new data from terrestrial, marine and ice-core records. Dating methods are described and evaluated, while the principles and practices of Quaternary stratigraphy are also discussed. The volume concludes with a new chapter which considers some of the key questions about the nature, causes and consequences of global climatic and environmental change over a range of temporal scales. This synthesis builds on the methods and approaches described earlier in the book to show how a number of exciting ideas that have emerged over the last two decades are providing new insights into the operation of the global earth-ocean-atmosphere system, and are now central to many areas of contemporary Quaternary research. This comprehensive and dynamic textbook is richly illustrated throughout with full-colour figures and photographs. The book will be of interest to undergraduates, postgraduates and professionals in Earth Science, Environmental Science, Physical Geography, Geology, Botany, Zoology, Ecology, Archaeology and Anthropology

Trace metals play key roles in life - all are toxic above a threshold bioavailability, yet many are essential to metabolism at lower doses. It is important to appreciate the natural history of an organism in order to understand the interaction between its biology and trace metals. The countryside and indeed the natural history of the British Isles are littered with the effects of metals, mostly via historical mining and subsequent industrial development. This fascinating story encompasses history, economics, geography, geology, chemistry, biochemistry, physiology, ecology, ecotoxicology and above all natural history. Examples abound of interactions between organisms and metals in the terrestrial, freshwater, estuarine, coastal and oceanic environments in and around the British Isles. Many of these interactions have nothing to do with metal pollution. All organisms are affected from bacteria, plants and invertebrates to charismatic species such as seals, dolphins, whales and seabirds. All have a tale to tell.