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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18개의 결과 중 1 - 5개
4 페이지
... porphyritic trap , of a reddish color . As we leave the main range , passing to the west , we encounter extensive ridges of stratified limestone rock , associated more or less closely with interrupted igneous exposures , and showing a ...
... porphyritic trap , of a reddish color . As we leave the main range , passing to the west , we encounter extensive ridges of stratified limestone rock , associated more or less closely with interrupted igneous exposures , and showing a ...
9 페이지
... porphyritic exposure , ( specimen rock No. 41 , ) forming a dyke , passing through the entire ridge from east to west , and constituting the highest point in this range . This igneous mass is variously associated with the adjoining ...
... porphyritic exposure , ( specimen rock No. 41 , ) forming a dyke , passing through the entire ridge from east to west , and constituting the highest point in this range . This igneous mass is variously associated with the adjoining ...
14 페이지
... porphyritic basalt makes its appearance , showing a precipitous columned face and tabled summit . In the recesses of the ravines , as exposed by the mountain torrents , a variable deposite of igneous conglomerate is met with , flanking ...
... porphyritic basalt makes its appearance , showing a precipitous columned face and tabled summit . In the recesses of the ravines , as exposed by the mountain torrents , a variable deposite of igneous conglomerate is met with , flanking ...
15 페이지
... porphyritic basalts , and amygdaloid traps . These products show a very variable character of exposure , forming ranges irregular in their direction , and differing in composition . These several mountain ranges cover more or less the ...
... porphyritic basalts , and amygdaloid traps . These products show a very variable character of exposure , forming ranges irregular in their direction , and differing in composition . These several mountain ranges cover more or less the ...
17 페이지
... porphyritic rock , identical in character with that noticed at the foot of the Guadalupe Pass . The stratification is inclined to the northeast , and along the line of its tilted ledges the spring issue forms frequent pools of limpid ...
... porphyritic rock , identical in character with that noticed at the foot of the Guadalupe Pass . The stratification is inclined to the northeast , and along the line of its tilted ledges the spring issue forms frequent pools of limpid ...
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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