8 targets
What the island is actually made of at the surface — and, on two cards, what is mapped underneath and cannot be assumed to outcrop.
The number on each card is nothing countable; these are mapped units, not tallies. Two of these cards describe bedrock mapped beneath the island. Mapping is not outcrop, and the geology crosswalk says so itself — do not go looking for a cliff.
The barrier dunes are mapped as their own critical dune area. At macro scale, dune sand sorts itself into ripples - get the lens within a hand's width of the surface in low side light.
mapped surface material·Michigan Quaternary geology, mapped on Beaver Island
Old lake-bottom and beach material, now dry land. The mixed grain sizes are the point: one frame with a coin or a lens cap for scale.
mapped surface material·Michigan Quaternary geology, mapped on Beaver Island
Unsorted - clay through boulders, all jumbled, because ice does not sort what it carries. That jumble is the photograph.
mapped surface material·Michigan Quaternary geology, mapped on Beaver Island
Mapped as a critical dune area. Shoot the profile from the beach at low sun so the slope reads, not from the top.
mapped surface material·Michigan critical dune areas
MNFI Report 2017-11 calls Monatou Bay on Garden Island the only A-ranked limestone cobble shore in Michigan. Shoot it through a few inches of clear water - a split shot if you have a dome port.
mapped surface material·MNFI natural-community survey
Meltwater-sorted sand and gravel. Look for it where a cut or a road bank exposes bedded layers.
mapped surface material·Michigan glacial land systems
Early Devonian limestone mapped under the island. The archive is explicit that mapping it here does NOT establish exposed bedrock - so this one is a caption on a cobble, not a cliff you can go and find.
mapped surface material·USGS SGMC lithology, via the geology crosswalk
Middle Devonian dolostone, also mapped beneath. Same caveat: mapped, not exposed.
mapped surface material·USGS SGMC lithology, via the geology crosswalk
