Economic Geology and the Bulletin of the Society of Economic Geologists, Volume 21Economic Geology Publishing Company, 1926 |
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Halaman 421
... amount of detail in literature pertaining to Coastal Plain Basin is found in a paper on the Irwin River area.15 99 Stratigraphy . The strata are Permo - Carboniferous , Jurassic , Cretaceous and Tertiary in age . Permo - Carboniferous ...
... amount of detail in literature pertaining to Coastal Plain Basin is found in a paper on the Irwin River area.15 99 Stratigraphy . The strata are Permo - Carboniferous , Jurassic , Cretaceous and Tertiary in age . Permo - Carboniferous ...
Halaman 422
... amount to more than a few hundred feet . The largest Carboniferous area is in the extreme southwest part of the Conti- nent , between Geographe Bay ( 17 ) , Indian and Antarctic Oceans and covers about 700 square miles , bounded by ...
... amount to more than a few hundred feet . The largest Carboniferous area is in the extreme southwest part of the Conti- nent , between Geographe Bay ( 17 ) , Indian and Antarctic Oceans and covers about 700 square miles , bounded by ...
Halaman 444
... amount of development . • The principal primary metallic minerals are pyrite , chalcopyrite , and hematite . . . The important gangue minerals are sericite , quartz , tourmaline , siderite , anhydrite , and barite . · 4 Butler , B. S. ...
... amount of development . • The principal primary metallic minerals are pyrite , chalcopyrite , and hematite . . . The important gangue minerals are sericite , quartz , tourmaline , siderite , anhydrite , and barite . · 4 Butler , B. S. ...
Halaman 449
... amount of subsidence in the Catalina is not known . The subsidence in the Southwest , though subject to new estimation after further study , promises to lie between 100 and 300 feet . This was a substitution which took place , not ...
... amount of subsidence in the Catalina is not known . The subsidence in the Southwest , though subject to new estimation after further study , promises to lie between 100 and 300 feet . This was a substitution which took place , not ...
Halaman 457
... amounts of heavy solution and where considerable quantities of minerals are separated the loss may become quite large ... amount has accumulated . It may be well to keep 2 or 3 such receptacles and to avoid mixing liquids high in ...
... amounts of heavy solution and where considerable quantities of minerals are separated the loss may become quite large ... amount has accumulated . It may be well to keep 2 or 3 such receptacles and to avoid mixing liquids high in ...
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Istilah dan frasa umum
abundant amount anticlines bakelite balsam banding Bighorn Basin bornite Boydell brecciated calcite carbon carborundum cassiterite cement cent chalcocite chalcopyrite Clinton sand Cloth coal containing copper crystals deposits depth dikes ECONOMIC GEOLOGY electrum evidence feet fissures folds formed fractures fragments galena gangue gas fields gas pools geologist Golden Eagle Golden Eagle field grains granite greenstone grinding hematite hypogene Illus intrusion iron formation lateral migration limestone magma magnetite material Meeteetse Mesaverde formation metasomatism microscope miles minerals Mining occur oil and gas origin oxide Petrographic Petroleum plate polishing polybasite pore spaces porous porphyry present pressure production pyrargyrite pyrite pyrrhotite quantities quartz region replacement reservoir beds sandstone schist sericite shale shows siderite silica silver solutions source beds specimen sphalerite strata structure sulphides supergene surface temperature tennantite Tertiary tetrahedrite thickness tion trough U. S. Geol U. S. Geological Survey upper veinlets veins writer zone