Something happens to uplift the area: folding faulting, etc.
Erosion wears away the uppermost layers Area submerges and deposition begins again. The almost vertical layers on the bottom formed first.
They will interpret their archaeological site by writing an explanation of when each stratum and artifact was deposited in their site.
Download: Description: Unit questions from five consecutive New York regents exams.
It settles out of the air and forms a layer over wide regions at the same time. The remians of the impact site in Mexico as seen by satellite imagery.
Example: the layer that marks the extinction of dinosaurs has characteristics of an asteroid impact.
They tilted a little then eroded to make the straight cutoff (the diagonal line going from bottom left to top right).
Then the final deposit was the layers to the top left.
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Using the absolute dating principles provided in Phase 1 of the lesson, students will make decisions of which artifacts to send to a lab for absolute dating.
Based on this information, they will learn how to relatively date associated artifacts.
The law of cross-cutting relationships: anything that cuts across layers of rock is younger than the rocks that it has intruded into. Vocabulary Sequence Puzzles: Sequence 1 Sequence 2 Sequence 3 Sequences 1, 2 & 3 on one sheet Sequence 4 Sequence 5 Sequence 6 Sequence 7 Relative Dating Craters (see PPT to the right for answers) Worksheet on Radio Dating DBQ on Dinosaurs DBQ on The Natural History of LI DBQ on Magnetic Pole Reversals All three layers of rock (limestone, sandstone, shale) were made, then the volcano formed.