Description acceptable. The flame structures in between load casts are a common indicator of this property. For 10 points each:
[10h] Name this property of geologic samples indicated by geopetal indicators like void-filling.
ANSWER: way-up [or bed orientation or original orientation; or younging direction; or stratigraphic facing; accept answers specifying which direction is up or down or the direction of gravity at the time of formation; accept answers specifying what is the top or bottom of your sample]
[10m] Determining what corresponds to the top of your sample is necessary to apply this law of stratigraphy, which states that younger strata lie on top of older strata.
ANSWER: law of superposition
[10e] Conversely, the way-up direction can be determined using the law of superposition using the “index” type of these samples, which indicate relative age. Amber often preserves these remnants of past organisms.
ANSWER: fossils [accept index fossils]
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