ELL Rx Paleogeo WrkSh 3 - EAS 1700 Worksheet 03 YOUR NAME...

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EAS 1700 Worksheet 03 Y OUR N AME ……………………………………… E XERCISE 1: R ECONSTRUCTING N EW Y ORK S P ALEOZOIC P ALEOTOPOGRAPHY (25 points) Using the Cambrian through Silurian and Devonian correlation charts and the elevation- measuring scheme in Table 1, plot paleotopographic profiles for each fossil-defined time interval (biostratigraphic zone), using your judgment to creatively time-average the elevation scores for each zone × longitude box. (25 panels @ 1 point/panel = 25 points) E XERCISE 2: T ESTING AND I NTERPRETING THE R ECONSTRUCTION (25 points) Time-correlation by volcanic ash layers reveals that the Amorphognathus superbus (A.s.) Zone overlaps in time with the Triarthrus becki (T.b.) Zone, higher A.s.-Zone limestones grading eastward into T.b.-Zone black shales. Paleocurrent directions from these strata (MO ) appear in the 74˚30'-76˚30' W longitude interval. 1. Going by the paleocurrent evidence alone, was the black shale deposited in shallower or deeper water than the limestone? (Two points)
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ELL Rx Paleogeo WrkSh 3 - EAS 1700 Worksheet 03 YOUR NAME...

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