Back to Nature: Geology Rocks!

For Geology Rocks, will they be expected to identify the rock samples, or just classify them as igneous, sedimentary, or metamorphic?
Students will need to know how to classify rocks as igneous (intrusive/extrusive), sedimentary (clastic/biochemical/chemical/organic), metamorphic (foliated/ non-foliated). They do not need to memorize rock names, but they should be able to justify how they decided what type of rock they have.

Please note -these subclassifications are not mentioned in the first draft of the Back to Nature: Geology Rocks event description. Olympians should know how to distinguish them.

igneous (intrusive/extrusive)

sedimentary (clastic/biochemical/chemical/organic)

metamorphic (foliated/ non-foliated)