Geologic Reconnaissance in the Matanuska and Talkeetna Basins, AlaskaU.S. Government Printing Office, 1907 - 71 sayfa |
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76 sonuçtan 1-5 arası sonuçlar
Sayfa 8
... channel , but spreads out over its gravel plain in a number of branches , whose positions are likely to vary from year to year . Boats can be towed up the river by hand , although with some difficulty on account of bars and quick- sands ...
... channel , but spreads out over its gravel plain in a number of branches , whose positions are likely to vary from year to year . Boats can be towed up the river by hand , although with some difficulty on account of bars and quick- sands ...
Sayfa 29
... channels in the Lower Cretaceous limestone . The basal portion of the volcanic series here consists of 100 feet of ... channel 1,000 feet wide , cut in the Cretaceous limestone and partly in the underlying sandstones . The arclike line ...
... channels in the Lower Cretaceous limestone . The basal portion of the volcanic series here consists of 100 feet of ... channel 1,000 feet wide , cut in the Cretaceous limestone and partly in the underlying sandstones . The arclike line ...
Sayfa 38
... channels and to deepen their trenches . The excavation of the gravels has been incomplete along the Matanuska , where long stretches of stream bluffs consist of gravel banks . These features suggest that either the preglacial drainage ...
... channels and to deepen their trenches . The excavation of the gravels has been incomplete along the Matanuska , where long stretches of stream bluffs consist of gravel banks . These features suggest that either the preglacial drainage ...
Sayfa 65
... channel and is cut through by the present stream , which falls pre- cipitously for about 150 feet in a very short distance and enters Wil- low Creek at a low gradient . An excellent dump for hydraulicking is thus afforded . Bed rock is ...
... channel and is cut through by the present stream , which falls pre- cipitously for about 150 feet in a very short distance and enters Wil- low Creek at a low gradient . An excellent dump for hydraulicking is thus afforded . Bed rock is ...
Sayfa 67
... channels has been derived by a concentration of the ancient conglomerates . KNIK RIVER . It is reported that on Metal Creek , a tributary of Knik River , pros- pectors discovered pay dirt which yielded $ 7 or $ 8 a day to the shovel ...
... channels has been derived by a concentration of the ancient conglomerates . KNIK RIVER . It is reported that on Metal Creek , a tributary of Knik River , pros- pectors discovered pay dirt which yielded $ 7 or $ 8 a day to the shovel ...
Sık kullanılan terimler ve kelime öbekleri
Alaska andesite Anvil Creek basin beach beam bed rock bench Bendeleben Mountains bowlders Brooks Bull Cape Nome cement cent channel Chickaloon Chickaloon Creek chloritic claims clay coal coarse coastal plain Collier concrete conglomerate contain creek bed district ditch east elevation erosion feet thick Geological Survey geology Glacier gold placers granite graphitic gravel greenstone Gulch inches intrusive Iron Creek Jurassic Kenai Kigluaik Mountains Knik Knik River Kougarok Kuzitrin Kuzitrin River limestone lower Matanuska Matanuska River material mica schist miles mineral mining Moffit mouth muck Niukluk Niukluk River Nome and Norton Nome group Nome River Norton Bay Norton Bay regions nuggets occur Ophir Creek pay streak pebbles placer gold Port Clarence probably reconnaissance reported sand sandstones schist Seward Peninsula Shale slates slopes sluice boxes special publication stream surface Susitna Talkeetna Mountains test pieces tributary U. S. Geol upper valley
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