Jessica Vandeventer
Science 156
29 September 2016
Sedimentary Rock Formation
Purpose/Question-
The purpose of the lab allows us to look at steno’s principals and study the process of lithification, transgression, and regression.
Hypothesis–
If I follow Steno’s principals in making rock layers, then I will be able to see the process of lithification.
Analysis Questions -
A. Did your sequence of rock layers follow Steno’s three principles? Explain why or why not.
The law of superposition says that undisturbed rock layers are going to be from oldest to youngest. The oldest is going to be at the bottom. Original Horizontality is where the layers of rock are going to be deposited horizontaly. The third principal is cross-cutting. This says that …show more content…
In which layer did you place the shell fossils and why? Why does it make sense in a regression sequence to place them where you did?
I put the shells in the lay with the sand. I believe that this was a good place to put the shell because there are shells buried in the sand along a beach. I like this place in the sequence of regression because I feel that the shells will mostly stay in the same layer after sitting for a long time.
D. How did your rock sequence undergo lithification? Describe the process of compaction and cementation and compare to natural processes.
My rock sequence underwent lithification by using pressure from my fist to pact down the layer. I mixed in Plaster of Paris in the different layers, so that the layers would cement together with the process. The layers are compacted and cemented together as water is pour over the layers and with time to dry.
Claim-
Evidence- This is a written explanation that supports your claims. How do you know that the rate of the reaction increases as the concentration increases? Include time vs. concentration data. Explain the meaning behind the data and calculations. Graphs, balanced equations, and calculations need to be interpreted and explained in order to count as evidence. Simply referring to them is not
Science 156
29 September 2016
Sedimentary Rock Formation
Purpose/Question-
The purpose of the lab allows us to look at steno’s principals and study the process of lithification, transgression, and regression.
Hypothesis–
If I follow Steno’s principals in making rock layers, then I will be able to see the process of lithification.
Analysis Questions -
A. Did your sequence of rock layers follow Steno’s three principles? Explain why or why not.
The law of superposition says that undisturbed rock layers are going to be from oldest to youngest. The oldest is going to be at the bottom. Original Horizontality is where the layers of rock are going to be deposited horizontaly. The third principal is cross-cutting. This says that …show more content…
In which layer did you place the shell fossils and why? Why does it make sense in a regression sequence to place them where you did?
I put the shells in the lay with the sand. I believe that this was a good place to put the shell because there are shells buried in the sand along a beach. I like this place in the sequence of regression because I feel that the shells will mostly stay in the same layer after sitting for a long time.
D. How did your rock sequence undergo lithification? Describe the process of compaction and cementation and compare to natural processes.
My rock sequence underwent lithification by using pressure from my fist to pact down the layer. I mixed in Plaster of Paris in the different layers, so that the layers would cement together with the process. The layers are compacted and cemented together as water is pour over the layers and with time to dry.
Claim-
Evidence- This is a written explanation that supports your claims. How do you know that the rate of the reaction increases as the concentration increases? Include time vs. concentration data. Explain the meaning behind the data and calculations. Graphs, balanced equations, and calculations need to be interpreted and explained in order to count as evidence. Simply referring to them is not