{"product_id":"phanerozoic-paleocontinental-world-maps-book-a-g-smith-9780521232586","title":"Phanerozoic Paleocontinental World Maps","description":"First published in 1980, this book shows the positions of the major continental areas during the past 560 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 240 million years, and finally at 40-million-year intervals to 560 million years ago. 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. Cylindrical equidistant and Lambert equal-area polar projections are used, with a thirty-degree latitude-longitude grid. Many interesting problems in the Earth Sciences are global. These maps provide a framework on which a wide variety of data may be plotted. Problems in fields as widely separated as palenontology, stratigraphy, geochemistry and tectonics may usefully be displayed on these maps.","brand":"WoB","offers":[{"title":"GB \/ NEW \/ INGRAM","offer_id":52401003790609,"sku":"NLS9780521232586","price":61.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9780521232586.jpg?v=1758753341","url":"https:\/\/www.worldofbooks.com\/products\/phanerozoic-paleocontinental-world-maps-book-a-g-smith-9780521232586","provider":"World of Books ","version":"1.0","type":"link"}