Geology Geology was the science , specifically planetary science , involving the study of the natural of a planet or other celestial body with a solid surface . One who studies geology was known as a geologist or exogeologist . Fields of geologic research included volcanology , mineralogy , geomechanics , and geochemistry . Geology was a common part of the Federation Starfleet ' s scientific portfolio and , , as well as starship s had geological labs . ( ; ; ) In 1893 , Samuel Clemens told numerous guests in a ballroom in San Francisco that geology had indicated that Human beings had been around for only a microscopic amount of time that the Earth had been in existence . ( ) In 2151 , Sub - Commander T ' Pol performed a geological analysis of the planet later known as Archer IV and discovered that the rocks on the planet were composed of limestone and cormalite . ( ) The geology on Terra Nova was comprised mainly of beresium ore . In 2151 , Commander Charles Tucker III told Captain Jonathan Archer that due to the geology on Terra Nova being " " a little shaky " " , the Novan s ' numerous passageways in their tunnels and wells had collapsed . ( ) In 2152 , not convinced that T ' Pol had made up a story about her foremother T ' Mir being the very first Vulcan to interact with Humans in the 1950s , Jonathan Archer said that she had visited Carbon Creek , where T ' Mir had been . T ' Pol remarked that as a scientist , she had also visited Yellowstone Park and Carlsbad Caverns , as she had an interest in geology . ( ) In 2153 , Gralik Durr , a Xindi - Arboreal , told Jonathan Archer that the Xindi ' s homeworld , Xindus , was a geologically unstable world during the Xindi Civil War and was eventually destroyed when the Xindi - Insectoid s and Reptilians detonated large explosions beneath eight of the planet ' s largest seismic fissures . ( ) In 2268 , the M - 5 computer explained that it chose Ensign as part of a landing party to Alpha Carinae II instead of the ' s chief geologist Rawlins because Carstairs served on a merchant marine vessel and once visited Alpha Carinae II on a geology survey for a mining company . ( ) In 2365 , the performed planetary geologic surveys in the Selcundi Drema sector . ( ) In 2372 , a Vulcan geological survey team was mining for Bakrinium on a planet in the Gamma Quadrant when they discovered the " Shroud of the Sword " , which was later given to Kor . With the help of Worf and Jadzia Dax , he then used it to find the legendary Sword of Kahless , stolen by the Hur ' q centuries before . ( ) In the " Julian Bashir , Secret Agent " holoprogram , Julian Bashir declared " Baccarat and geology are my life " . ( ) In 2373 , Worf told Jadzia Dax while they were vacationing on Risa that it was " " nothing more than a rain soaked , geologically unstable jungle " " without the planet ' s use of its weather modification network and seismic regulator s . ( ) In 2375 , a Silver Blood copy of Tuvok told his duplicate crew mate Chakotay that they picked up silicate from a comet in the Podaris sector nearly a year before . Chakotay replied that the silicate had been stored in the ship ' s geology lab since then . ( ) In 2377 , B ' Elanna Torres asked Icheb if he would be interested to join her on the holodeck for rock climbing . Icheb replied that he had some interest in geology , but Torres insisted that it was not about rocks , but rather the climb . ( )