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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23개의 결과 중 1 - 5개
6 페이지
... marl , argillaceous matter being less frequent . Occasionally the exposed bluffs show de- posits of gypsum , which in some localities forms extensive beds . The most usual form of this material is in confused crystalline and fibrous ...
... marl , argillaceous matter being less frequent . Occasionally the exposed bluffs show de- posits of gypsum , which in some localities forms extensive beds . The most usual form of this material is in confused crystalline and fibrous ...
10 페이지
... marl and coarse brown sand , capped with a thin layer of highly calcareous marl . From the summit of this second elevation stretches a wide table plain , variously indented by shallow valleys , and swelling toward the base of the ...
... marl and coarse brown sand , capped with a thin layer of highly calcareous marl . From the summit of this second elevation stretches a wide table plain , variously indented by shallow valleys , and swelling toward the base of the ...
23 페이지
... marls , belonging either to the upper Tertiary , or alluvial series of deposits . In such situations it frequently forms very extensive beds , composing the main bulk of local table - land exposures . In concluding this report , I have ...
... marls , belonging either to the upper Tertiary , or alluvial series of deposits . In such situations it frequently forms very extensive beds , composing the main bulk of local table - land exposures . In concluding this report , I have ...
31 페이지
... marls , of more or less coarsely grained sand , and also of differently colored limestone ; all are profusely impregnated and sprinkled over with oxide of magnetic iron . BETWEEN THE PECOS AND DEVIL'S RIVER . 31 How watered ...
... marls , of more or less coarsely grained sand , and also of differently colored limestone ; all are profusely impregnated and sprinkled over with oxide of magnetic iron . BETWEEN THE PECOS AND DEVIL'S RIVER . 31 How watered ...
35 페이지
... marls , or blue or grayish clay , all profusely impregnated with oxide of iron , and even layers of corresponding debris , often intersect the green sand strata . The general characteristic of this belt and its subdivisions is the ...
... marls , or blue or grayish clay , all profusely impregnated with oxide of iron , and even layers of corresponding debris , often intersect the green sand strata . The general characteristic of this belt and its subdivisions is 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