GEOL1302_SigProject_PartI - B5

GEOL 1302 Earth History Group Project and Presentation “Geologic Timescale and Global Earth History” Part I Watch the video about using the length of a football field as an analogy of Earth’s history at https://www.youtube.com/watch?v=M8V_glRW1hA&feature=emb_logo . The entire playing field is used for this analogy with a total length of 100 yards (or about 91.5 meters), with Earth’s history starting at 4.5 billion years ago. Using this analogy, fill out the tables below for the geologic eras, periods, and some epochs (Table 1), and also for some major life events (Table 2). List the location on the football field either in yards/feet/inches or in meters/centimeters/millimeters before the endzone on the right (corresponding to the “Present”) . Please don’t forget to indicate the length unit you are using. One example has been filled out in the table: The Archean Eon started 4 billion (or 4000 million) years before present. If 4.5 billion years correspond to the entire field (100 yards or 91.5 meters), then 4 billion years correspond to about 88.9 yards (or 81.3 meters). Refer to the Geologic Time Scale in your textbook, or to a time scale at one of the following locations: https://www.geosociety.org/GSA/Education_Careers/Geologic_Time_Scale/GSA/timescale/home.aspx http://www.ucmp.berkeley.edu/education/explorations/tours/geotime/guide/geologictimescale.html https://www.arrsd.org/wp-content/uploads/2018/11/Geologic-Time-Scale.pdf You might also have to find some other resources.

Table 1 Geologic Time Interval Years Before Present (Start) Location on the Football Field Holocene Epoch 11.7 thousand years .003 yards Pleistocene Epoch 2.6 million years .1 yard Quaternary Period 2.6 million years .1 yard Neogene Period 23 million years .5 yard Paleogene Period 66 million years 1.5 yards Cenozoic Era 66 million years 1.5 yards Cretaceous Period 145 million years 3.2 yards Jurassic Period 201.3 million years 4.5 yards Triassic Period 251 million years 5.6 yards Mesozoic Era 251 million years 5.6 yards Permian Period 298 million years 6.6 yards Pennsylvanian Period 323 million years 7.2 yards Mississippian Period 358 million years 8.0 yards Devonian Period 419 million years 9.3 yards Silurian Period 443 million years 9.8 yards Ordovician Period 485 million years 10.8 yards Cambrian Period 541 million years 12 yards Paleozoic Era 541 million years 12 yards Proterozoic Eon 2.5 billion years 55.6 yards Archean Eon 4 billion (or 4000 million) years 88.9 yards or 81.3 meters