James St. John:
Ship Rock (Oligocene; Navajo Volcanic Field, northwestern New Mexico, USA)
James St. John:
Minette dike & volcanic neck (Oligocene, 27-32 Ma; Ship Rock & southern dike, Navajo Volcanic Field, New Mexico, USA) 1
James St. John:
Minette dike & volcanic neck (Oligocene, 27-32 Ma; Ship Rock & southern dike, Navajo Volcanic Field, New Mexico, USA) 2
James St. John:
Minette dike & volcanic neck (Oligocene, 27-32 Ma; Ship Rock & southern dike, Navajo Volcanic Field, New Mexico, USA) 3
James St. John:
Minette dike & volcanic neck (Oligocene, 27-32 Ma; Ship Rock & southern dike, Navajo Volcanic Field, New Mexico, USA) 4
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 1
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 2
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 3
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 4
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 5
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 6
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 7
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 8
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 9
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 10
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 11
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 12
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 13
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 14
James St. John:
Minette dike & volcanic neck (Oligocene, 27-32 Ma; Ship Rock & southern dike, Navajo Volcanic Field, New Mexico, USA) 5
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 15
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 16
James St. John:
Minette dike (Oligocene, 27-32 Ma; Ship Rock's southern dike, Navajo Volcanic Field, New Mexico, USA) 17