Laboratory eight dating of rocks fossils and geologic events
This is close to the San Andreas Fault where the Pacific Plate is dragging the edge of North America to the Northwest (recall lab 2.7 on p.66 & 67). Examine the photo, that on p.218 and Figures 8.4 & 8.5 p.210.
In your manual, the photo shows buff coloured horizontal gravel (Late Tertiary continental fan deposits of Arizona, in modern North America) overlying Continental Red-bed sandstones (pre-Middle Triassic 225 Ma of the Moenkopi Formation of Pangea) that became folded later in Cretaceous time during the uplift of the Colorado Plateau. In the photo above, ink bold BLUE lines between the diatomite layers.
See how she carefully preserves fossils to maintain their value far into the future.
Age of the Earth wikipedia, lookup History of geology wikipedia, lookup Large igneous province wikipedia, lookup Algoman orogeny wikipedia, lookup Task Force Majella wikipedia, lookup Paleontology wikipedia, lookup Sedimentary rock wikipedia, lookup Clastic rock wikipedia, lookup Geology of Great Britain wikipedia, lookup History of paleontology wikipedia, lookup Geology of the Grand Canyon area wikipedia, lookup Name(s):___________________ __________________________ Section (please circle one): 1-Mon 2-Tues Lab 8: Relative and Absolute Geological Dating Lab: W16 To accompany Chapter 8 in the AGI Lab Manual by Busch and Tasa 10th ed.
The cleaned face has annual layers representing ________ years of deposits. Examine the photo at the bottom of page 217 in your manual. There is grass (1) is growing on a thin (~40 cm) brown soil (2).
This requires uplift and erosion on land of much of the upper continental crust.Every fossil is a time capsule containing a record of events that happened on Earth thousands or millions of years ago.Michelle cleans and prepares fossils to better expose them for study and display.A bed marks an episode and an environment (facies) of deposition.The contacts between the beds mark hiatus (a gap) representing either a time of non-depostion or erosion.
In any place on Earth we tend to find less complete records, but segments of shorter duration that preserve more detail for that interval of the stratigraphic record.