Quaternary Dating MethodsThe Quaternary is the most recent major subdivision of the geological record, covering the last 2. 5 million years or so of earth history and extending to the present day. Over the course of the Quaternary, the earth's global climate system oscillated between glacial and interglacial modes. A reliable chronology is key to our understanding not only of the dramatic changes in the physical and biotic landscapes that resulted from these major climatic
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