Results 161 to 170 of about 15,415 (206)
Some of the next articles are maybe not open access.
Geology of the zinc-lead deposit on Calumet Island, Quebec
Geological Society of America Bulletin, 1941The zinc-lead deposit described is located on Calumet Island, Quebec, 53 miles northwest of Ottawa. The complex ores resemble those of Edwards, New York, and Montauban, Quebec, and other Grenville deposits. They occur in moderately inclined Grenville metamorphic rocks, including crystalline limestone, amphibolite, amphibolite-gneisses, quartzitic ...
openaire +2 more sources
Geology of the Ozark Lead Company Mine, Viburnum Trend, Southeast Missouri
Economic Geology, 1977In contrast to most of the other mines in the Viburnum Trend, much of the Ozark Lead Company orebody lies at right angles to the depositional strike of the sediments. This divergence is due to localization of much of the ore along the flank of a northwest-trending Precambrian high situated on the upthrown side of a high-angle reverse fault.A second ...
M. M. Mouat, C. W. Clendenin
openaire +2 more sources
Geology and Reserves of Lead and Zinc Ores : A World Survey
Nature, 1949AT the eighteenth session of the International Geological Congress, held in London last summer, after being postponed from 1940, the proceedings of Section F were devoted to a consideration of the geology, paragenesis and reserves of the ores of lead and zinc. Up to the time of the Second World War, it had been assumed generally that resources of these
openaire +2 more sources
Geology and structural features of vein-type lead and zinc deposits
Geology of Ore Deposits, 2007The geological and structural position and localization conditions of the vein-type Pb-Zn deposits of the Sadon (North Ossetia) and East Karamazar (North Tajikistan) ore districts are considered. The leading role of long-lived deep faults in the control of large deposits is emphasized. Examples of such deposits in different provinces are given.
openaire +2 more sources
On Some Problems of the Lead Isotope Method and Its Application in Geology
Isotopenpraxis Isotopes in Environmental and Health Studies, 1985Some new trends in the mathematical modelling of the lead isotope evolution in connection with the dynamic development of the earth's crust and with the exchange of materials between the crust and the mantle are discussed. The mathematical modelling of the derivatives with respect to time of U/Pb and Th/Pb ratios instead of μ and W give the possibility
openaire +2 more sources
A Synthesis of Seismic and Geology in a Poor Data Area Leads to a Substantial Gas Discovery
61st EAGE Conference and Exhibition, 1999The imbricated zone in the Molasse basin in Upper Austria and Salzburg is a good example of how the synthesis of seismic and geology can achieve results that cannot be reached by anyone discipline alone.
W. Nachtmann, A. Wagini
openaire +2 more sources
On the connection between geology, meteorlogy and agriculture, as illustrated by the leading agricultural districts of Scotland [PDF]
Transactions of the Edinburgh Geological Society, 1879 It has long been a favourite axiom among writers on agriculture that a very close connection exists between geology and agriculture. Of course, in so far as the agricultural soil falls within the province of geology, there can be no question as to the connection between the two sciences.
openaire +1 more source
Geology of the Mount Costigan lead-zinc deposit, west-central New Brunswick.
1990The Mount Costigan Pb-Zn deposit is located about 40km east of Plaster Rock, New Brunswick within the Early Devonian Costigan Mountain Formation, in the Matapedia Cover Sequence (formerly the Cialeur Bay Synclinorium). It occurs about 250m east of the summit of Mount Costigan within a series of brecciated and unbrecciated crystal and lapilli tuff ...
openaire +3 more sources
Geology of the Lippincott lead area, Inyo County, California [PDF]
Open-File Report, 1949 openaire +1 more source