Geologic Reconnaissance in the Matanuska and Talkeetna Basins, AlaskaU.S. Government Printing Office, 1907 - 71 sayfa |
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97 sonuçtan 1-5 arası sonuçlar
Sayfa 3
... Distribution and character . Age and correlation ... . Igneous phenomena ... . Lower Middle Jurassic rocks .. Distribution and character Structure Fossils and age- Quartz diorite 11 11 12 12 15 16 16 16 18 18 19 Distribution Age Upper ...
... Distribution and character . Age and correlation ... . Igneous phenomena ... . Lower Middle Jurassic rocks .. Distribution and character Structure Fossils and age- Quartz diorite 11 11 12 12 15 16 16 16 18 18 19 Distribution Age Upper ...
Sayfa 4
... Distribution of gold - bearing rocks ...... . Description of localities__ 59 63 63 64 64 65 Willow Creek___ . Nelchina River_ . Knik River__ 65 67 67 Copper-- . Knik River__ . 67 67 Kashwitna River__ Index 86333 69 ILLUSTRATIONS . Page ...
... Distribution of gold - bearing rocks ...... . Description of localities__ 59 63 63 64 64 65 Willow Creek___ . Nelchina River_ . Knik River__ 65 67 67 Copper-- . Knik River__ . 67 67 Kashwitna River__ Index 86333 69 ILLUSTRATIONS . Page ...
Sayfa 12
... distribution along the lower course of Talkeetna River . In that region they show somewhat greater petrographic diversity than where studied by Eldridge . With the slates are associated various microcrystalline schists ; that is ...
... distribution along the lower course of Talkeetna River . In that region they show somewhat greater petrographic diversity than where studied by Eldridge . With the slates are associated various microcrystalline schists ; that is ...
Sayfa 13
... distribution to the south is indicated by the fact that the moraine of the great glacier at the head of Knik Valley is composed exclusively of graywacke and slate . As the same rocks are reported by Mendenhall from along the shores at ...
... distribution to the south is indicated by the fact that the moraine of the great glacier at the head of Knik Valley is composed exclusively of graywacke and slate . As the same rocks are reported by Mendenhall from along the shores at ...
Sayfa 16
... DISTRIBUTION AND CHARACTER . The oldest rocks of determined age comprise andesitic greenstones , quartz porphyries , tuffaceous sandstones , shales , and conglomerates . Some coal is found in the nonvolcanic portion of this series . The ...
... DISTRIBUTION AND CHARACTER . The oldest rocks of determined age comprise andesitic greenstones , quartz porphyries , tuffaceous sandstones , shales , and conglomerates . Some coal is found in the nonvolcanic portion of this series . The ...
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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