Bulletin, 325-329. sayılarU.S. Government Printing Office, 1949 |
Kitabın içinden
100 sonuçtan 1-5 arası sonuçlar
Sayfa 39
... limestone was not used , took forty - five and thirty minutes , respectively . On the second tests , when limestone was used , the cleaning took eight and ten minutes , respectively . To make a general statement , it may be loosely said ...
... limestone was not used , took forty - five and thirty minutes , respectively . On the second tests , when limestone was used , the cleaning took eight and ten minutes , respectively . To make a general statement , it may be loosely said ...
Sayfa 10
... Limestone 300 Upper Jurassic and Upper Middle Jurassic . Shales , sandstones , conglomerates , tuff , and arkose , with coal . 2,000 + Unconformity . Lower Middle Jurassic Pre - Jurassic : Unconformity ? Shales , sandstone , and ...
... Limestone 300 Upper Jurassic and Upper Middle Jurassic . Shales , sandstones , conglomerates , tuff , and arkose , with coal . 2,000 + Unconformity . Lower Middle Jurassic Pre - Jurassic : Unconformity ? Shales , sandstone , and ...
Sayfa 17
... microlitic andesite no larger than the feldspar or quartz grains . The shales locally carry numerous 13070 - Bull . 327-07- -2 limestone nodules . At various localities the shales and sandstones LOWER MIDDLE JURASSIC ROCKS . 17.
... microlitic andesite no larger than the feldspar or quartz grains . The shales locally carry numerous 13070 - Bull . 327-07- -2 limestone nodules . At various localities the shales and sandstones LOWER MIDDLE JURASSIC ROCKS . 17.
Sayfa 18
limestone nodules . At various localities the shales and sandstones associated with the greenstones are intensely shattered and crushed . This is especially notable in the gorge of Billy Creek . In this vicin- ity also occur several ...
limestone nodules . At various localities the shales and sandstones associated with the greenstones are intensely shattered and crushed . This is especially notable in the gorge of Billy Creek . In this vicin- ity also occur several ...
Sayfa 24
... limestone , 300 feet thick , which over- lies the Upper Jurassic strata conformably . The limestone has a limited areal distribution and is known only from the headwaters of Billy Creek and Nelchina River , where it weathers in ...
... limestone , 300 feet thick , which over- lies the Upper Jurassic strata conformably . The limestone has a limited areal distribution and is known only from the headwaters of Billy Creek and Nelchina River , where it weathers in ...
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Sık kullanılan terimler ve kelime öbekleri
Alaska Arkansas auriferous average basin beach beam bed rock bench Bendeleben Mountains boiler efficiency bowlders Cape Nome carbon cent Chickaloon chloritic clay clinker coal bed coal field coastal plain Collier combustion-chamber temperature creek bed curve deposits district ditch Drill hole dry coal east efficiency 72 fault feet thick formation Fort Smith fossils furnace Geological Survey geology granite gravel greenstone Gulch Hartshorne hydrogen inches Kigluaik Kigluaik Mountains Kougarok limestone lower Matanuska Matanuska River material miles mineral mining Mountains mouth Neuropteris Niukluk River Nome group Norton Bay Norton Bay regions Number of tests Ophir Creek outcrop pay streak placer gold Port Clarence pound of combustible pounds of dry probably quartz ratio reconnaissance reported River sample sand sandstone schist Seward Peninsula shaft Shale Shale roof shows slope Spadra stream surface tion tributary U. S. Geol upper valley veins
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