Other themes include Cenozoic volcanism, paleofold hydrology, periglacial features, wetlands, vegetation history as reconstructed from pollen and macro-plant remains, environmental isotopes, and the Quaternary archaeological record. In a concluding synthesis, evidence from all of these sources is used to trace the evolution of climates through the past 65 million years. This book will be an essential work of reference for students and researchers in the fields of geology, paleontology hominid evolution, and paleoclimatology.