Understanding the geologic time scale and how to organize Earth’s history into a coherent timeline. MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence, ...

A study published in the journal Communications Earth & Environment reveals the existence of a 60-million-year cycle combining tectonics, biogeochemistry, and marine biodiversity. By ...

They explain: Unlike the official Geologic Time Scale-our Viewer does not end with the present as culmination. Instead, we locate the present as the middle of geologic time.

Object Details Author Harland, W. B (Walter Brian) 1917- Notes Rev. ed. of: A Geologic time scale. 1982. Includes indexes. Date 1990 Call number QE508.G3956 1990X Type Books Physical description xvi, ...

The geologic time scale divides Earth’s 4.6 billion-year story into grandly named chapters. Like nesting dolls, the chapters contain sub-chapters, which themselves contain sub-sub-chapters.

The newly proposed lunar time scale scheme, consisting of three Eons and six Periods units, offers a systematic framework for describing the evolutionary history of the Moon. This scheme ...