Strength/Weakness of Each Method to Collect Earth data

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RJLiberator
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Homework Statement



Name a strength and weakness of each technique.

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The Attempt at a Solution



The two techniques that I came up with are:

Magnetic Line of Force in rocks to analyze land-based paleomagnetic data.
Strength: Well, it's easy to collect. [need help here]
Weakness: Data collected by this method results in a loss of data as we do not acquire east/west data but only north/west data.

Geomagnetism --> To measure magnetic anomalies of the sea-floor. This was marine based data.
Strength: We get exact results as the information is hard-coded into the seafloor.
Weakness: Don't have a good idea yet. I initially said that the data was difficult to collect, but that isn't the answer we were looking for. [help here?]
 

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:P I didn't have room in the title to properly demonstrate what I needed. But by the title, I mean, We are looking at each method for strengths/weaknesses to collect data sets for movement of the India plate.
 
Regarding a weakness of paleomagnetism think in terms of plate tectonics and how that affects the oceanic crust.
 
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