Norris Geyser Basin hydrothermal features (0)
Norris Geyser Basin geologic points (1)
Norris Geyser Basin attitude measurements (2)
| horizantal dip |
| inclined dip |
| vertical joint |
Norris Geyser Basin streams (3)
Norris Geyser Basin waterbodies (4)
Norris Geyser Basin geologic units (5)
| al - Alluvial and lacustrine deposits |
| si - Sinter |
| he - Hydrothermal explosion deposits |
| ps - Outwash sand and gravel |
| psc - Cemented outwash sand and gravel |
| pt - Till |
| ptc - Cemented till |
| pk - Kame sand, gravel, and cobbles |
| pokc - Cemented kame sediments |
| sich - Chalcedonic sinter |
| sach - Chalcedonized sandstone |
| lb - Lava Creek Tuff, member B |
Pocket Basin sample locations (6)
| discharging pool |
| drill hole |
| extinct vent |
| flowing spring |
| geyser |
| mudpot |
| pool |
| spring |
| steam vent |
| vent, no surface flow |
Pocket Basin channels and depressions (7)
| topographic depression |
| drainage channel |
Pocket Basin contacts and faults (8)
| contact, certain |
| contact, approximately located |
| water boundary |
| map boundary |
Pocket Basin alteration and overprint areas (9)
| area of bare ground surrounding pools with seasonably variable water level |
| area of many small acid vents |
| area of less intense acid alteration |
| area of more intense acid alteration |
Pocket Basin geologic units (10)
| al - Alluvium |
| alc - Cemented alluvium |
| alk - Kaolinite alluvium |
| ds - Diatomaceous silt |
| m - Hydrothermal mud |
| si - Sinter |
| sio - Old sinter |
| hep - Hydrothermal explosion deposits |
| pygs - Gravel and sand |
| pyk - Kame deposits |
| pykc - Cemented kame deposits |
| sc - Cemented sandstone |
| water |
Upper Geyser Basin hydrothermal features (11)
Upper Geyser Basin alteration and overprint areas (12)
Upper Geyser Basin geologic units (13)
| fa - Fine-grained humic alluvium |
| sg - Stream sand and gravel |
|
| t - Talus |
| tr - Travertine |
|
| si - Sinter |
| ds - Diatomaceous silt |
| m - Hydrothermal mud |
| he - Hydrothermal explosion deposits |
| otr - Old travertine |
| osi - Old sinter |
| pt - Till of Pinedale Glaciation |
| pk - Kame deposit of Pinedale Glaciation |
|
| pcs - Summit Lake flow of the Central Plateau Member of the Plateau Rhyolite |
| pm - Mallard Lake flow of the Mallard Lake Member of the Plateau Rhyolite |
| pul - Scaup Lake flow of the Upper Basin Member of the Plateau Rhyolite |
|
| pub - Biscuit Basin flow of the Upper Basin Member of the Plateau Rhyolite |
| water |
Lower Geyser Basin hydrothermal features (14)
| hydrothermal explosion crater |
| major hydrothermal explosion crater |
| flowing spring |
| steam vent |
| minor hydrothermal explosion crater |
| vent |
Lower Geyser Basin drill holes (15)
| drill hole |
Lower Geyser Basin attitude measurements (16)
| horizontal dip |
| inclined dip |
Lower Geyser Basin contacts and faults (17)
|
| contact, approximately located |
| fault, approximately located |
| fault, concealed |
|
| water boundary |
| edge of mapping |
Lower Geyser Basin alteration and overprint areas (18)
| area of acid alteration |
| opal-cemented clastic deposits |
Lower Geyser Basin geologic units (19)
| tc - Talus and colluvium |
| al - Alluvium |
| tr - Travertine |
| si - Sinter |
| ds - Diatomaceous silt |
| m - Hydrothermal mud |
| hep - Hydrothermal explosion deposits of Pocket Basin Crater |
| het - Hydrothermal explosion deposits of Twin Buttes Crater |
| pygs - Gravel and sand |
| pyt - Till |
| pyk - Younger kame deposits |
| pok - Older kame deposits |
| poc - Cemented kame deposits |
| pop - Pumice-rich cemented kame deposits |
| pcy - West Yellowstone flow |
| pcn - Nez Perce Creek flow |
| pce - Elephant Back flow |
| pm - Mallard Lake flow |
| pub - Biscuit Basin flow |
| water |
|
