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Publication Extents

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Distribution of elements in biotite-hornblende pairs and in an orthopyroxene-clinopyroxene pair from zoned plutons, northern Sierra Nevada, California
A. Hietanen
1971, Contributions to Mineralogy and Petrology (30) 161-176
Distribution of major and minor elements has been determined for five hornblende-biotite pairs from hornblende-biotite quartz diorite and monzotonalite and for a clinopyroxene-orthopyroxene pair from pyroxene diorite collected from the border zones and centers of zoned plutons in the northern Sierra Nevada, California. The distribution coefficients K d [Mg/Fe] for biotite/hornblende are of...
Reduction of lithologic-log data to numbers for use in the digital computer
C.O. Morgan, J.M. McNellis
1971, Journal of the International Association for Mathematical Geology (3) 79-86
The development of a standardized system for conveniently coding lithologic-log data for use in the digital computer has long been needed. The technique suggested involves a reduction of the original written alphanumeric log to a numeric log by use of computer programs. This numeric log can...
Primary distribution of silver and copper in native gold from six deposits in the Western United States
G. A. Desborough, Robert H. Heidel, W. H. Raymond, J. Tripp
1971, Mineralium Deposita (6) 321-334
Electron-microprobe analyses and mineragraphic studies of native gold demonstrate considerable variations in the primary intergrain and intragrain distribution of silver. The gold grains have from 1–55 weight percent silver; copper is present in grains from only one locality and ranges from 0.1–0.6 weight percent. Some gold...
Nesting by a yearling Canada goose
L. C. Hall, Frank B. McGilvrey
1971, Journal of Wildlife Management (35) 835-836
A free-flying Canada goose (Branta canadensis interior), known to be just under a year old, laid a clutch of four eggs at the Patuxent Wildlife Research Center. At least half of the 2-year-old females nest at Patuxent, and almost all of the 3-year-olds nest. As far as we know, this...
Reproductive success of Potomac River ospreys--1970
Stanley N. Wiemeyer
1971, Chesapeake Science (12) 278-280
Osprey reproductive success on the Potomac River during 1970 is described. Thirty-five percent of the accessible active nests fledged young and only 0.70 young were fledged per active nest. Egg failure was the major cause of poor success. Reproduction was below that considered normal for a stable population....
Transcontinental mourning dove recovery
Brian Sharp
1971, The Auk (88) 924-924
A Mourning Dove (Zenaida macroura) banded in New York has been reported shot in California. On 25 August 1969, near Palmyra (43°00' N, 77°10' W), New York Department of Environmental Conservation personnel placed U. S. Fish & Wildlife Service band 883-97279 on the leg of a hatching-year Mourning Dove of...