What type of basaltic feature is shown in this photograph? 
Definitions:
Normal Populations
Populations that follow a normal distribution, where the majority of data points are concentrated around the mean value.
Standard Error
A statistical term that measures the accuracy with which a sample distributes around the population mean; it is the standard deviation of the sampling distribution.
Sampling Distribution
The probability distribution of a given statistic based on a random sample, used to estimate population parameters.
Formal Charge
Used to calculate the charge of an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms.
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