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 20
... limestone nodules . With the shales are asso- ciated various sandstones , conglomerates , and some tuffs and arkoses . Strata of this age have a wide distribution east of Chickaloon Creek , but were not observed in the Talkeetna ...
... limestone nodules . With the shales are asso- ciated various sandstones , conglomerates , and some tuffs and arkoses . Strata of this age have a wide distribution east of Chickaloon Creek , but were not observed in the Talkeetna ...
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 ...
Sayfa 29
... limestone . The basal portion of the volcanic series here consists of 100 feet of tuffs and amygdaloid breccias , which interleave with the sandstone beds in the upper portion of the conglomerate . The conglomerate consists of rather ...
... limestone . The basal portion of the volcanic series here consists of 100 feet of tuffs and amygdaloid breccias , which interleave with the sandstone beds in the upper portion of the conglomerate . The conglomerate consists of rather ...
Sayfa 30
... limestone characteristic of the region . A basalt block 8 by 10 feet was the largest noted . The matrix in which this angular material is embedded is composed of small , well - rounded gravel . These features are interpreted as ...
... limestone characteristic of the region . A basalt block 8 by 10 feet was the largest noted . The matrix in which this angular material is embedded is composed of small , well - rounded gravel . These features are interpreted as ...
Sayfa 38
... limestone . The later limit is determined by the fact that the fluviatile conglomerates , resting upon the peneplain , appear to represent the similar conglomerates occurring at the top of Kenai or in the Matanuska basin . According to ...
... limestone . The later limit is determined by the fact that the fluviatile conglomerates , resting upon the peneplain , appear to represent the similar conglomerates occurring at the top of Kenai or in the Matanuska basin . According to ...
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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