Geologic Reconnaissance in the Matanuska and Talkeetna Basins, AlaskaU.S. Government Printing Office, 1907 - 71 sayfa |
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100 sonuçtan 1-5 arası sonuçlar
Sayfa 6
... wide valley of Susitna River , on the east by the Copper River basin , and on the south by Matanuska Valley . In general the Tal- keetna Mountains merge gradually into the surrounding lowlands , except on the south , where they rise ...
... wide valley of Susitna River , on the east by the Copper River basin , and on the south by Matanuska Valley . In general the Tal- keetna Mountains merge gradually into the surrounding lowlands , except on the south , where they rise ...
Sayfa 7
... wide . During high water it can be crossed with a pack train only by swimming the horses and rafting the outfit . Sheep Creek is a tributary of Talkeetna River 14 miles above its mouth . It flows more slowly than the river and is ...
... wide . During high water it can be crossed with a pack train only by swimming the horses and rafting the outfit . Sheep Creek is a tributary of Talkeetna River 14 miles above its mouth . It flows more slowly than the river and is ...
Sayfa 8
... wide along the lower stretches of the stream , but in places closes to a narrow box canyon 300 or 400 feet deep . The Matanuska is a swiftly flowing , silt - laden stream , with a current reaching probably 7 miles an hour . The volume ...
... wide along the lower stretches of the stream , but in places closes to a narrow box canyon 300 or 400 feet deep . The Matanuska is a swiftly flowing , silt - laden stream , with a current reaching probably 7 miles an hour . The volume ...
Sayfa 10
... wide , near the head of Willow Creek . This belt has an east - and - west direc- tion , and is known to extend not farther east than Tsadaka Creek and to disappear westward beneath the gravel floor of Susitna Valley . The schists are ...
... wide , near the head of Willow Creek . This belt has an east - and - west direc- tion , and is known to extend not farther east than Tsadaka Creek and to disappear westward beneath the gravel floor of Susitna Valley . The schists are ...
Sayfa 16
... wide distribution , especially in the interior of the Talkeetna Moun- tains , where only the volcanic portion of the series appears to be present . The great bulk of the greenstones are clearly products of explosive volcanic activity ...
... wide distribution , especially in the interior of the Talkeetna Moun- tains , where only the volcanic portion of the series appears to be present . The great bulk of the greenstones are clearly products of explosive volcanic activity ...
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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