Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Charles F. Lewis"'
Autor:
Charles F. Lewis, Toshiko K. Mayeda, Paul H. Benoit, Carleton B. Moore, Timothy J. McCoy, Klaus Keil, Ivan E. Wilson, Richard D. Ash, Andrew Morse, Rainer Wieler, Robert N. Clayton, Derek W. G. Sears, David W Muenow, I. Casanova, C. T. Pillinger
Publikováno v:
Meteoritics. 28:681-691
Roosevelt County (RC) 075 was recovered in 1990 as a single 258-gram stone. Classification of this meteorite is complicated by its highly unequilibrated nature and its severe terrestrial weathering, but we favor H classification. This is supported by
Publikováno v:
Meteoritics. 27:87-91
The Maralinga meteorite was found near the village of Maralinga, South Australia in 1974, but was not recognized as a meteorite until 1989. One weathered individual was recovered with a total mass of 3.38 kg. The bulk composition and petrography of M
Publikováno v:
Science. 259:1599-1601
Peaks at 720 and 840 atomic mass units were identified by mass spectrometry in a sample extracted from a fulgurite, which is a glassy rock that forms where lightning strikes the ground. The peaks are interpreted as arising from C(60) and C(70) and th
Publikováno v:
Meteoritics. 26:169-170
— The Cerro los Calvos meteorite is a single stone of 68.5 g found in the Nuevo Mercurio strewn field of Zacatecas, Mexico (24°20′N, 102°8′W). It is an unusual H4 chondrite. Its olivine (Fa12.5) and orthopyroxene (Fs 11.7, Wo 0.8) are reduced
Publikováno v:
Geochimica et Cosmochimica Acta. 53:1435-1440
The paper presents measurements of the induced thermoluminescence properties and carbon contents of the dark matrix and light clasts of six regolith breccias. For all of the meteorites, the dark matrix has a lower mean thermoluminescence sensitivity
Autor:
Carleton B. Moore, Bartholomew Nagy, Austin Long, Carl R. Anhaeusser, Steven M. Kunen, John E. Zumberge, Charles F. Lewis, Desmond A. Pretorius
Publikováno v:
Precambrian Research. 1:43-48
Carbon content (0.02–0.68% organic), carbonate content (0–69.7%) and carbonate 13C abundances ( − 7.5−+2.3‰ ) were obtained on samples from the Swaziland sediments of South Africa, which are among the oldest known sedimentary rocks on earth
Publikováno v:
Precambrian Research. 1:49-54
Sedimentary and igneous rocks of the Swaziland Sequence of South Africa (>3,200 my. old) contain total carbon (0.09–8.28%), organic carbon (0.04–1.95%) and sulfur (9–53,000 ppm). Amounts of organic carbon are generally high in the lower part of
Publikováno v:
Meteoritics. 19:29-48
Based on the example of Abernathy (L6 chondrite), it is shown how petrographic investigation can be used to unravel the nature, chronology and conditions of superposed metamorphic events in chondrites. Features considered include the texture of the r
Autor:
Charles F. Lewis, Merle M. Musselman
Publikováno v:
The Journal of Nutrition. 32:549-558
Autor:
Charles F. Lewis
Publikováno v:
Journal of Heredity. 49:267-271