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Page 6001, results 150001 - 150025

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Topographic mapping: A challenging future
U.S. Geological Survey
1964, Report
The United States Geological Survey was established by Congress in 1879 to make a systematic study of the geology and natural resources of the United States. To provide the essential base maps for these studies, the Survey immediately began a program of topographic mapping. In 1882 a general plan was adopted for a standard series...
Surface water records of Indiana, 1964
Water Resources Division, U.S. Geological Survey
1964, Report
The surface-water records for the 1964 water year for gaging stations, partial-record stations, and miscellaneous sites within the State of Indiana are given in this report. For convenience there are also included records for a few pertinent gaging stations in bordering States. The records were collected and computed by the...
Late quaternary sea-level change and crustal rise at Boston, Massachusetts, with notes on the autocompaction of peat
C. A. Kaye, E.S. Barghoorn
1964, Geological Society of America Bulletin (75) 63-80
The compression of peat beneath its own weight (autocompaction) is discussed, and it is shown that because of this process radiocarbondated samples of salt-marsh peat or peaty sediment, other than very thin samples cut from the base of the deposit, cannot be correlated with sea level without construction of a...
Boulder train of silicified paleozoic wood, southeastern Massachusetts
C. A. Kaye
1964, Geological Society of America Bulletin (75) 233-236
Pebbles of silicified gymnospermous wood occur widely in the drift of southeastern Massachusetts. An investigation of the distribution of these pebbles shows the bedrock source of the wood to be tuffaceous beds that apparently overlie older granite in the Middleboro-Plympton area, Massachusetts, and are at the base of the Carboniferous...
Paleozoic mollusk: Hyolithes
L. Marek, E. L. Yochelson
1964, Science (146) 1674-1675
An unusually well-preserved Ordovician fossil from Czechoslovakia shows that the enigmatic paired structures once thought to be outgrowths of the operculum of Hyolithes are really independent structures lying between the operculum and the aperture of the shell. The find seems to provide conclusive proof of the morphologic uniqueness of hyolithids....
Exploration for mineral deposits in White County, Georgia
Vernon J. Hurst
1964, Report
White County is in the Northeast Georgia Highland. It comprises 243 square miles and has abouit 7,000 Inhabitants. The county seat is Cleveland.Although the scene of considerable mining activity in the past, White County now has few operating mines: a small production of clay1 for the manufacture of miscellaneous potter...
Low-amplitude aeromagnetic anomalies in Southeastern Missouri
J.W. Allingham
1964, Geophysics (29) 537-552
This study shows that aeromagnetic anomalies of less than 200 gammas are associated with topographic relief of exposed Precambrian granitic and volcanic rocks of the St. François Mountains. Anomalies resulting from hills coarsely crystalline granite are as high as 100 gammas in amplitude, whereas anomalies over comparable hills of fine-grained rocks, such as granophyre or devitrified volcanic rock, are...
Principal features and origin of podiform chro-mite deposits, and some observations on the Guleman-Soridag District, Turkey
T. P. Thayer
1964, Economic Geology (59) 1497-1524
Podiform chromite deposits occur in alpine peridotite and mafic complexes and fundamentally are tabular, pencil-shaped, or irregular in form. The chromite characteristically is anhedral and commonly shows effects of granulation and magmatic corrosion. Flow-layering, foliation, and lineation are parallel in most chromite deposits and peridotite host rocks, and normally pass through major...