substrate composition
-
Representative image using: hydrothermal alteration -
Representative image using: ponded sediment -
Representative image using: carbonate -
Representative image using: volcaniclastic sediment -
Representative image using: manganese crust -
Representative image using: spatter -
Representative image using: pebble -
Representative image using: ash -
Representative image using: hydrothermal sediment and bacterial floc mixture -
Representative image using: cobble -
Representative image using: hydrothermal crust -
Representative image using: dropstone
