Question 1
Unconformities that represent a break in the geologic record of deposition are geologically significant ________.
◦ they represent a period of erosion in the region
◦ they give an indication of sea level rise within an ocean basin
◦ they cannot be mapped
◦ the fossils found in the unconformities can be used to correlate global time period
Question 2
If you observe an angular unconformity, you would infer that the region had experienced ________.
◦ uplift and tilting of sedimentary units that exposes them to erosion over a period of time with subsequent renewed deposition
◦ deposition in shallow water, uplift or lowering of sea level enough to expose the rocks to erosion and non-deposition for a period of time, and subsequent resubmergence of the remaining sedimentary units where they experience new deposition
◦ deposition of sedimentary layers on crystalline igneous or metamorphic rocks that are exposed at the surface of the earth
◦ intrusion of igneous rocks into a depositional setting, forcing the sedimentary layers upward and possibly deforming them, followed by subsidence of the remaining sedimentary layers and renewed deposition
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670
John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d
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Trouble finding the overlapped region
T-DNA region of T1 plasmid pSYN12424
A genetic map showing the location of revertible (point) mutants of the rll region