Remagnetization is a common phenomenon in rocks, and developing a greater understanding of its mechanisms has several benefits. Acquisition of a secondary magnetization is usually tangible evidence of a diagenetic or thermal event, which can be dated using palaeomagnetic techniques. This is important because the timing of diagenetic and thermal events is commonly difficult to determine. Remagnetization can also obscure primary magnetizations and a better understanding of remagnetization could improve our ability to uncover primary magnetizations. Many chemical remagnetization mechanisms have been proposed, including those associated with chemical alteration by a number of different fluids (e.g. orogenic, weathering, mineralizing, hydrocarbons) and burial diagenetic processes (e.g. clay diagenesis, maturation of organic matter). This book contains case studies and review articles that focus on remagnetization, chemical remagnetization mechanisms, and magnetic changes associated with chemical alteration by hydrocarbons.The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society in the world, and one of the largest publishers in the Earth sciences.The Society publishes a wide range of high-quality peer-reviewed titles for academics and professionals working in the geosciences, and enjoys an enviable international reputation for the quality of its work.The many areas in which we publish in include:-Petroleum geology -Tectonics, structural geology and geodynamics -Stratigraphy, sedimentology and paleontology -Volcanology, magmatic studies and geochemistry -Remote sensing -History of geology -Regional geology guides