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 |
도서 본문에서
70개의 결과 중 1 - 5개
2 페이지
... occurs the first exposure of igneous rock . It is seen as an isolated knoll of dark - colored trap , showing at this place but slight disturbance of the adjacent cretaceous strata . This formation is thence observed to constitute a ...
... occurs the first exposure of igneous rock . It is seen as an isolated knoll of dark - colored trap , showing at this place but slight disturbance of the adjacent cretaceous strata . This formation is thence observed to constitute a ...
4 페이지
... occur what are termed by travellers " dry stretches , " being in some instances 50 miles in extent . In all our observations thus far , little disturbance is noticeable in the position of the strata . To ordinary view they appear ...
... occur what are termed by travellers " dry stretches , " being in some instances 50 miles in extent . In all our observations thus far , little disturbance is noticeable in the position of the strata . To ordinary view they appear ...
10 페이지
... occurs the first permanent water since leaving the Rio Grande , about 32 miles distance . This locality is the " Samalayurca Spring . " A short distance beyond this , commences the singular formation known as the " Medanos , " or Sand ...
... occurs the first permanent water since leaving the Rio Grande , about 32 miles distance . This locality is the " Samalayurca Spring . " A short distance beyond this , commences the singular formation known as the " Medanos , " or Sand ...
15 페이지
... occur elevations and depressions , and variety of formation in the course of the same continued range . With this principle in view , we have a ready explanation of all the peculiarities exhibited in the portion of the range under ...
... occur elevations and depressions , and variety of formation in the course of the same continued range . With this principle in view , we have a ready explanation of all the peculiarities exhibited in the portion of the range under ...
16 페이지
... occurring in the upper slope of the Sierra Madre , including feldspathic lava , granitic in texture , associated with basalt , stratified porphyry , and closely cemented breccias . These several forms , variously associated , serve to ...
... occurring in the upper slope of the Sierra Madre , including feldspathic lava , granitic in texture , associated with basalt , stratified porphyry , and closely cemented breccias . These several forms , variously associated , serve to ...
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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