Publications
USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.
Filter Total Items: 3097
Nesting ecology of Arctic loons Nesting ecology of Arctic loons
Arctic Loons were studied on the Yukon-Kuskokwim Delta, Alaska, from the time of their arrival in May to their departure in September, in 1974 and 1975. Pairs arrived on breeding ponds as soon as sufficient meltwater was available to allow their take-off and landing. Loons apparently do not initiate nests immediately after their arrival, even when nest-sites are available. Delayed egg...
Authors
Margaret R. Petersen
The United States Geological Survey in Alaska: Accomplishments during 1978 The United States Geological Survey in Alaska: Accomplishments during 1978
This circular describes the 1979 programs of the U.S. Geological Survey in Alaska. The mission of the Geological Survey is to identify the Nation 's land, water, energy, and mineral resources; to classify federally-owned mineral lands and water-power sites; to resolve the exploration and development of energy and natural resources on Federal and Indian lands; and to explore and appraise...
Paleozoic rocks on the Alaska Peninsula: A section in The United States Geological Survey in Alaska: Accomplishments during 1978 Paleozoic rocks on the Alaska Peninsula: A section in The United States Geological Survey in Alaska: Accomplishments during 1978
Two small areas of middle Paleozoic limestone were discovered near Gertrude Creek, 16 km north of Becharof Lake on the Alaska Peninsula, during reconnaissance flying as part of the Alaska Mineral Resource Assessment Program (AMRAP) for the Alaska Peninsula. Previously, the only known occurrence of Paleozoic rocks on the Alaska Peninsula was a small exposure of middle Permian limestone on...
Authors
Robert L. Detterman, James E. Case, Frederic H. Wilson
A preliminary assessment of the timing and migration of shorebirds along the northcentral Alaska Peninsula A preliminary assessment of the timing and migration of shorebirds along the northcentral Alaska Peninsula
An intensive study of post-breeding and migrating shorebirds was conducted in 1976 on a major estuary of the Alaska Peninsula at Nelson Lagoon. Twenty species were recorded, eight of them breeding on the study area. Temporal patterns of relative abundance were obtained from aerial and ground censuses. Prominent events in the seasonal southward movements were (a) congregation of non- and...
Authors
Robert E. Gill, Paul D. Jorgensen
Yolk formation in some Charadriiform birds Yolk formation in some Charadriiform birds
By counting and measuring the major ova of breeding birds at autopsy and combining these data with time intervals between ovipositions, rough estimates have been made of the time required to form yolk in some non-captive birds (King 1973). Direct studies have been made in domestic fowl (Gallus gallus var. domesticus; Gilbert 1972), turkeys (Meleagris galloparvo; Bacon and Cherms 1968)...
Authors
T.E. Roudybush, C.R. Grau, Margaret R. Petersen, D. G. Ainley, K.V. Hirsch, A.P. Gilman, S.M. Patten
Preliminary geologic map of Alaska Preliminary geologic map of Alaska
No abstract available.
Authors
Helen M. Beikman
BKD vertical transmission BKD vertical transmission
No abstract available.
Authors
G. L. Bullock, H. M. Stuckey, D.M. Mulcahy
New potassium-argon data on the age of mineralization and metamorphism in the Willow Creek mining district, southern Talkeetna Mountains, Alaska New potassium-argon data on the age of mineralization and metamorphism in the Willow Creek mining district, southern Talkeetna Mountains, Alaska
The now largely abandoned Willow Creek mining district, southern Talkeetna Mountains, Alaska, produced nearly $18,000,000 in gold and minor silver between 1909 and the early 1950's. Mineralized quartz veins, which contain gold and silver along with minor quantities of base metals (in pyrite, galena, chalcopyrite, sphalerite, molybdenite, and arsenopyrite), cut Late Cretaceous and early...
Authors
Miles L. Silberman, Bela Csejtey, James G. Smith, Marvin A. Lanphere, Frederic H. Wilson
New ages on intrusive rocks and altered zones in the Alaska Peninsula: A section in The United States Geological Survey in Alaska: Accomplishments during 1977 New ages on intrusive rocks and altered zones in the Alaska Peninsula: A section in The United States Geological Survey in Alaska: Accomplishments during 1977
Preliminary potassium-argon dating of intrusive rocks and altered zones in the Chignik and Sutwik Island quadrangles of the Alaska Peninsula seems to indicate at least three and possibly four Tertiary ages of alteration and mineralization.
Authors
Frederic H. Wilson, Robert L. Detterman, Miles L. Silberman
Geochemical and generalized geological map showing distribution and abundance of lead in the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska Geochemical and generalized geological map showing distribution and abundance of lead in the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska
No abstract available.
Authors
Thomas D. Hessin, P. M. Taufen, J. C. Seward, S. J. Quintana, A. L. Clark, Donald Grybeck, J. M. Hoare, W. L. Coonrad
The United States Geological Survey in Alaska: Accomplishments during 1977 The United States Geological Survey in Alaska: Accomplishments during 1977
United States Geological Survey projects in Alaska study a wide range of topics of economic and scientific interest. Work done in 1977 includes contributions to economic geology, regional geology, stratigraphy, engineering geology, hydrology, and marine geology. Many maps and reports covering various aspects of the geology and mineral and water resources of the State were published. In...