| gptkbp:instanceOf | gptkb:geological_formation 
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                                | gptkbp:conductedBy | United States Geological Exploration 
 | 
                        
                            
                                | gptkbp:directed | gptkb:Clarence_King 
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                                | gptkbp:endDate | 1872 
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                                | gptkbp:explores | gptkb:California gptkb:Colorado
 gptkb:Nevada
 gptkb:Utah
 gptkb:Wyoming
 western United States
 
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                                | gptkbp:namedAfter | 40th parallel north 
 | 
                        
                            
                                | gptkbp:notableMember | gptkb:Samuel_Franklin_Emmons gptkb:William_H._Holmes
 gptkb:James_T._Gardner
 gptkb:George_M._Wheeler
 gptkb:Julius_Bien
 gptkb:Arnold_Hague
 
 | 
                        
                            
                                | gptkbp:officialName | Geological Exploration of the Fortieth Parallel 
 | 
                        
                            
                                | gptkbp:produced | scientific reports geological maps
 topographical maps
 
 | 
                        
                            
                                | gptkbp:publishedIn | multiple volumes (1870s) 
 | 
                        
                            
                                | gptkbp:resultedIn | establishment of the United States Geological Survey 
 | 
                        
                            
                                | gptkbp:sponsor | gptkb:U.S._Army_Corps_of_Engineers 
 | 
                        
                            
                                | gptkbp:startYear | 1867 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Clarence_King's_Geological_Exploration_of_the_Fortieth_Parallel gptkb:U.S._Geological_Exploration_of_the_Fortieth_Parallel
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Fortieth Parallel Survey 
 |