Report on the United States and Mexican Boundary Survey: Made Under the Direction of the Secretary of the Interior, 1권,파트 2C. Wendell, printer, 1857 |
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vii 페이지
... specimens of rocks and minerals submitted for exami- nation from the collections of the survey ... 106-112 Specimens collected on the route from the Pacific coast eastward , including the tertiary of the coast and the metamorphic rocks ...
... specimens of rocks and minerals submitted for exami- nation from the collections of the survey ... 106-112 Specimens collected on the route from the Pacific coast eastward , including the tertiary of the coast and the metamorphic rocks ...
4 페이지
... specimens Nos . 12 , 13 , 14 , 15 . The elevation attained by this range , on the line of the El Paso road , is from 5,000 to 7,000 feet above the sea . On entering this range from the east , we pass quite abruptly from the horizontal ...
... specimens Nos . 12 , 13 , 14 , 15 . The elevation attained by this range , on the line of the El Paso road , is from 5,000 to 7,000 feet above the sea . On entering this range from the east , we pass quite abruptly from the horizontal ...
9 페이지
... ( specimen rock No. 41 , ) forming a dyke , passing through the entire ridge from east to west , and constituting the ... specimens Nos . 42 to 46 , inclusive . About seven miles north of El Paso , the mountains adjoining the river give ...
... ( specimen rock No. 41 , ) forming a dyke , passing through the entire ridge from east to west , and constituting the ... specimens Nos . 42 to 46 , inclusive . About seven miles north of El Paso , the mountains adjoining the river give ...
12 페이지
... ( specimen rock , No. 99. ) In this latter rock are exposed the veins of argentiferous galena , frequently extending into the upper siliceous rock , but acquiring its greatest thickness and richness in this lower forma- tion . The veins ...
... ( specimen rock , No. 99. ) In this latter rock are exposed the veins of argentiferous galena , frequently extending into the upper siliceous rock , but acquiring its greatest thickness and richness in this lower forma- tion . The veins ...
21 페이지
... ( Specimen rock , Nos . 97 and 98. ) SILVER . - Silver ore is found at several localities , mostly on the Mexican side of the line . It has also been found in the Organ Mountains and various portions of southern New Mexico . The ...
... ( Specimen rock , Nos . 97 and 98. ) SILVER . - Silver ore is found at several localities , mostly on the Mexican side of the line . It has also been found in the Organ Mountains and various portions of southern New Mexico . The ...
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adjoining alluvial Ammonites basin beds belt bluffs Boundary Survey breccia calcareous cañon Caprina carbonate carboniferous limestone character clay coal measures coast collections color Colorado compact composed connexion containing copper Cordilleras course creek cretaceous cretaceous formation cretaceous fossils cretaceous strata crystalline deposits desert diluvial Eagle Pass El Paso elevation exhibit Exogyra exposures extensive feet feldspar feldspathic fossils Frémont frequently geological granite gravelly table-land green sand igneous rocks Inoceramus irregular Jersey lava lignite localities lower valve marked marl mass metamorphic rocks miles mineral Missouri mountain range mouth Nebraska numerous occur Ostrea Paso Pitcheri plain PLATE porphyritic portion present problematicus quartz region ribs ridge Rio Bravo river rocky Roemer San Pedro sandstone Santa shell side Sierra similar slope Sonoyta southwest species specimens springs strata stratified stream summit surface Tertiary formation TEXANA Texas texture thick umbo upper valley various vicinity volcanic