Additional USGS Geoscience data can be found by geographic location or by publication series.
Number Type Name 2101 conventional Buried Fault Blocks, Older Paleozoic 2102 conventional Porous Carbonate Buildup 2103 continuous Fractured Interbed 2104 conventional Permian-Pennsylvanian Marginal Clastics 2105 conventional Salt Anticline Flank 2106 conventional Permo-Triassic Unconformity 2107 conventional Cretaceous Sandstone