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Album caption: Oblique aerial view of the outer and inner moraines of the Farewell glaciation along the South Fork. The fresh inner moraine (Qdf2) of the Farewell glaciation (Farewell 2) is at the left of the picture, and the slightly subdued outer moraine (Qdfl) of the same glaciation (Farewell 1) in the middle and right foreground. Outwash (Qof) of this glaciation leads away from these moraines and forms a smooth, fairly steep slope at their immediate front and a gentle slope away from them. A segment of the greatly subdued moraine (Qds) of the Selatna glaciation can be seen in the right background. This segment, and a part of the outer moraine of the Farewell glaciation, are pictured on the right and left sides,...
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Album caption: Vertical aerial view of stable dune field, with locally active dunes, near the Little Kobuk Sand Dunes. Small active dunes (smooth white areas) and many swamps and ponds are scattered over the area. The active dune near the center of the pictue is part of a large and complex blowout, characterized by canoe-shaped troughs and broadly accurate longitudinal ridges. The dune-building winds are southeast to east. The dune field is about 5 miles south of the Kobuk River, midway between Nakochelik and Mishuk Creeks. Kobuk district, Northern Alaska region, Alaska. 1951. (Photo by U.S. Coast and Geodetic Survey) Published as figure 4 in U.S. Geological Survey Bulletin 1181-K. 1964. No index card available.
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Album caption: Exposure of till and outwash of the Kobuk Glaciation along the east bank of the Ambler River. Stratified yellowish-gray gravel, sand, and silt in the upper part of the bluff overlies bluish-gray till in the lower part. The 100-foot section was measured near the left side of the picture. The bluff is 2 miles upstream from the junction of the Ambler and Kobuk Rivers. Kobuk district, Northern Alaska region, Alaska. 1951. Published as figure 2 in U.S. Geological Survey Bulletin 1181-K. 1964. No index card available.
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Album caption: Oblique aerial view of the Takotna River valley and the bordering uplands. The flood plain of the meandering Takotna River (Qam) floors of the broad canyon cut through the uplands along the Nixon Fork fault. On the left side of the river, Takotna Mountain rises about 3.500 feet above sea level. It has a core of mafic and felsic igneous rocks of Tertiary age and is mantled with rubble. To the right of the river are rounded mountains and creek valleys underlain by folded sedimentary rocks - graywacke and shale - of Cretaceous age. The summits form a prominent upland surface that has been intensely dissected by streams. McGrath district, Kuskokwim region, Alaska. 1942. (Photo by U.S. Army Air Force)...
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Album caption: Vertical aerial view of the eastern half of the Little Kobuk Sand Dunes. The dune field at the left of the picture, in part stabilized and in part active, becomes increasingly active toward the right where it merges into the Little Kobuk Sand Dunes. On the left a series of U-shaped dunes form large parabolic ridges with long gently curved sides; in the active field they form undulating transverse ridges with ends at the edge of the field curved back to the windward. The dune-building winds are southeasterly. Kobuk district, Northern Alaska region, Alaska. 1951. (Photo by U.S. Coast and Geodetic Survey) Published as figure 5 in U.S. Geological Survey Bulletin 1181-K. 1964. No index card available.
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Album caption: Vertical aerial view of part of the younger dune field bordering the Kuskokwim River. Prominent dune ridges in the field (Qs) are outlined and numbered as follows: (1) single ridges, (2) composite ridges, and (3) groups of ridges. The dune field is bordered on the northeast by the flood plain (Qam) of the meandering Kuskokwim River, from which it is separated by a steep escarpment that averages 100 feet in height. Along this border there is also a low bedrock hill (a.) Center of the picture is located about 8 miles east-southeast of McGrath. McGrath district, Kuskokwim region, Alaska. 1942. (Photo by U.S. Army Air Force) Published as figure 30 in U.S. Geological Survey Bulletin 1071-G. 1960. No...
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Album caption: Oblique aerial view of the bog-covered alluvial plain of the Nixon Fork lowland and bordering fan apron. The bog-covered alluvial plain (Qapl) covers much of the upper half of the picture. The bogs (a) smooth light-gray areas, and islands (b) together give a ragged, mottled appearance to the picture. On the lower half is a fan apron (Qaa) that leads down from bordering uplands and merged into the alluvial plain. The flood plains (Qam) of the Nixon Fork and one of its tributaries are along the upper edge of the picture. McGrath district, Kuskokwim region, Alaska. 1949. (Photo by U.S. Air Force) Published as figure 34 in U.S. Geological Survey Bulletin 1071-G. 1960. No index card available.
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Album caption: Exposure through the end moraine of the Selatna glaciation along the Big River. Till (light-gray bands) is interbedded with outwash gravel (dark-gray bands), reflecting minor advances and retreats of the ice margin. Large boulder shown in picture has diameter of about 4 feet. This exposure is 6 miles southwest of Lone Mountain. McGrath district, Kuskokwim region, Alaska. circa 1949. Published as figure 24 in U.S. Geological Survey Bulletin 1071-G. 1960. No index card available.
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Album caption: Oblique aerial view of the north edge of the Alaska Range and the bordering piedmont in the Windy Fork area. The Farewell fault indicated by a number of short arrows (a), extends across the front of the Alaska Range. The flood plain (Qab) of the Windy Fork and a small alluvial fan (Qaf) of a tributary stream are cut into drift (Qdf2) of the late phase of the Farewell glaciation (Farewell 2). On the right side of the picture is another flood plain (Qab), of an unnamed stream, cut into outwash (Qof) of the Farewell glaciation. A number of large cones (Qac) blanket the base of the range and extend onto the piedmont. Two isolated bedrock hills (b) project above the surficial deposits of the piedmont....
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Album caption: Oblique aerial view of the fresh moraine of the Walker Lake Glaciation at Walker Lake. The prominent moraine, divisible into and outer and an inner loop, extends completely around the southern end of the lake except for a narrow valley cut by its outlet stream. The lake is near the headwaters of the Kobuk River, which is somewhat within the picture, a low oblique high altitude view. Kobuk district, Northern Alaska region, Alaska. 1955. Published as figure 3 in U.S. Geological Survey Bulletin 1181-K. 1964. No index card available.
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Album caption: Oblique aerial view of a large part of the older dune field between the Kuskokwim and Big Rivers. The field (Aso) is characterized by sand ridges and irregularly shaped sand hillocks, on which white spruce and black spruce are dominant (dark-gray areas.) Interdune areas have scattered black spruce and a heavy cover on muskeg vegetation (light-gray areas.) The dune field is bordered on the northeast (upper left corner of the picture) by the flood plain (Qam) of the meandering Katlitna River, from which it is separated by an irregular escarpment estimated to range between 100 and 150 feet in height. On the opposite side of the river is a small part of the younger McGrath dune field (Qs), separated from...
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Album caption: Moraines of the Selatna and Farewell glaciations along the Big River. The end moraine of the Farewell glaciation forms the high escarpment on the far right side of the Big River flood plain. The escarpment averages about 100 feet in height. The long smooth ridge beyond, and rising above - the end moraine is one the lateral moraines of the Selatna glaciation. These moraines are 4 miles north of the south border of the upper Kuskokwim region. McGrath district, Kuskokwim region, Alaska. circa 1949. Published as figure 25 in U.S. Geological Survey Bulletin 1071-G. 1960. No index card available.
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Album caption: Low aerial view of several lakes on alluvial plain in Medfra flats. The lakes are between the East and South Forks, about 18 miles east-southeast of Medfra. A floating mat of vegetation outlines the near end of the lake in the foreground. Forested areas between the lakes have a heavy carpet of muskeg vegetation. Tonzona district, Kuskokwim region Alaska. ca. 1949. Published as figure 35 in U.S. Geological Survey Bulletin 1071-G. 1960. No index card available.
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Album caption: Oblique aerial view of the moraines of the Farewell and Selatna glaciations along the South Fork. The topographic expression of the slightly subdued outer moraine (Qdfl) of the early phase of the Farewell glaciation (Farewell 1), on the left side of the picture, contrasts sharply with that of the greatly subdued moraine (Qds) of the Selatna glaciation, on the right side of the picture. Between the two morainal systems and also enveloping the older moraine is the widespread outwash slope (Qof) of the Farewell glaciation. It is smooth and fairly steep at the immediate front of the younger moraine and appears on the photographs as a light-gray strip. Small streams flow on the outwash slope. The braided...
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Album caption: Oblique aerial view of the Great Kobuk Sand Dunes. The eastern part of the field has many undulating transverse ridges made up of a series of U-shaped dunes; the ends of the ridges at the edge ofthe field are curved back to the windward. In the western part of the field, where the amount of sand has increased and the vegetation cover has decreased, the ridges consist of a series of barchans. The dune-building winds are easterly. Scale and orientation vary somewhat within the picture, a low oblique high altitude view. Kobuk district, Northern Alaska region, Alaska. 1955. Published as figure 6 in U.S. Geological Survey Bulletin 1181-K. 1964. No index card available.
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Album caption: Kobuk Valley. View to the east from field camp on the northwest end of Avaterat Lake along Nauneluk Valley. June 1952. (No index card)


    map background search result map search result map Northwest end of Avaterat Lake, Kobuk Valley, Kobuk district, Northern Alaska region, Alaska. 1952. Exposure of till and outwash of the Kobuk Glaciation. Kobuk district, Northern Alaska region, Alaska. 1951. Oblique aerial view of the north edge of the Alaska Range. Tonzona district, Kuskokwim region Alaska. 1942. Oblique aerial view of the Takotna River valley. McGrath district, Kuskokwim region, Alaska. 1942. Exposure through the end moraine of the Selatna glaciation. McGrath district, Kuskokwim region, Alaska. circa 1949. Moraines of the Selatna and Farewell glaciations along the Big River. McGrath district, Kuskokwim region, Alaska. circa 1949. Oblique aerial views of the moraines of the Selatna and Farewell glaciations. Tonzona district, Kuskokwim region, Alaska. 1941. Oblique aerial view of the outer and inner moraines of the Farewell glaciation. Tonzona district, Kuskokwim region, Alaska. 1941. Oblique aerial view of a large part of the dune field between the Kuskokwim and Big Rivers. McGrath district, Kuskokwim region, Alaska. 1949. Vertical aerial view of part of the younger dune field bordering the Kuskokwim River. McGrath district, Kuskokwim region, Alaska. 1942. Oblique aerial view of the bog-covered alluvial plain of the Nixon Fork lowland. McGrath district, Kuskokwim region, Alaska. 1949. Low aerial view of several lakes on alluvial plain in Medfra flats. Tonzona district, Kuskokwim region Alaska. ca. 1949. Oblique aerial view of the fresh moraine of the Walker Lake Glaciation. Kobuk district, Northern Alaska region, Alaska. 1955. Vertical aerial view of stable dune field. Kobuk district, Northern Alaska region, Alaska. 1951. Vertical aerial view of the eastern half of the Little Kobuk Sand Dunes. Kobuk district, Northern Alaska region, Alaska. 1951. Oblique aerial view of the Great Kobuk Sand Dunes. Kobuk district, Northern Alaska region, Alaska. 1955. Northwest end of Avaterat Lake, Kobuk Valley, Kobuk district, Northern Alaska region, Alaska. 1952. Exposure of till and outwash of the Kobuk Glaciation. Kobuk district, Northern Alaska region, Alaska. 1951. Oblique aerial view of the north edge of the Alaska Range. Tonzona district, Kuskokwim region Alaska. 1942. Oblique aerial view of the Takotna River valley. McGrath district, Kuskokwim region, Alaska. 1942. Exposure through the end moraine of the Selatna glaciation. McGrath district, Kuskokwim region, Alaska. circa 1949. Moraines of the Selatna and Farewell glaciations along the Big River. McGrath district, Kuskokwim region, Alaska. circa 1949. Oblique aerial views of the moraines of the Selatna and Farewell glaciations. Tonzona district, Kuskokwim region, Alaska. 1941. Oblique aerial view of the outer and inner moraines of the Farewell glaciation. Tonzona district, Kuskokwim region, Alaska. 1941. Oblique aerial view of a large part of the dune field between the Kuskokwim and Big Rivers. McGrath district, Kuskokwim region, Alaska. 1949. Vertical aerial view of part of the younger dune field bordering the Kuskokwim River. McGrath district, Kuskokwim region, Alaska. 1942. Oblique aerial view of the bog-covered alluvial plain of the Nixon Fork lowland. McGrath district, Kuskokwim region, Alaska. 1949. Low aerial view of several lakes on alluvial plain in Medfra flats. Tonzona district, Kuskokwim region Alaska. ca. 1949. Oblique aerial view of the fresh moraine of the Walker Lake Glaciation. Kobuk district, Northern Alaska region, Alaska. 1955. Vertical aerial view of stable dune field. Kobuk district, Northern Alaska region, Alaska. 1951. Vertical aerial view of the eastern half of the Little Kobuk Sand Dunes. Kobuk district, Northern Alaska region, Alaska. 1951. Oblique aerial view of the Great Kobuk Sand Dunes. Kobuk district, Northern Alaska region, Alaska. 1955.