Zobrazeno 1 - 10
of 23
pro vyhledávání: '"M R Dence"'
Autor:
M. R. Dence
Publikováno v:
Meteoritics & Planetary Science. 52:1285-1299
Impact structures in the crystalline rocks of the Canadian Shield range over two orders of magnitude in size and display morphologies recognized elsewhere in the solar system. This contribution draws upon new examinations of drill core from Canadian
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc73a720db26dd772843b938f889b489
https://doi.org/10.1111/maps.12822
https://doi.org/10.1111/maps.12822
Autor:
M. R. Dence
Publikováno v:
Meteoritics & Planetary Science. 39:267-286
The structure of Canadian impact craters formed in crystalline rocks is analyzed using shock metamorphism and evidence for movement along shear zones. The analysis is based on an interpretation that, beyond the near field region, shock pressure atten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec8ac278918c9b9c4cea0fa80c098fcc
https://doi.org/10.1111/j.1945-5100.2004.tb00340.x
https://doi.org/10.1111/j.1945-5100.2004.tb00340.x
Autor:
R. J. Floran, C. H. Simonds, M. R. Dence, J. L. Warner, W. C. Phinney, R. A. F. Grieve, M. J. Rhodes, Bor-ming Jahn
Publikováno v:
Geophysical Research Letters. 3:49-52
Chemical, petrographic, isotopic and field studies of igneous-textured rocks within the Manicouagan structure indicate that they are the product of impact melting. Features of the melt sheet include a high degree of textural variation combined with c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee7e3392003dcf6e88713cdf88346aaf
https://doi.org/10.1029/gl003i002p00049
https://doi.org/10.1029/gl003i002p00049
Autor:
R. A. F. Grieve, M. R. Dence
Publikováno v:
Icarus. 38:230-242
The terrestrial crater production rate is estimated from a compilation of the locations and ages of proven and probable terrestrial impact craters and compared with that calculated from astronomical observations and for other planets. The estimated s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::047962234e8d4d28718459cc38058bb0
https://doi.org/10.1016/0019-1035(79)90180-5
https://doi.org/10.1016/0019-1035(79)90180-5
Publikováno v:
Contributions to Mineralogy and Petrology. 46:81-97
Glass from the West Clearwater Lake hypervelocity impact crater contains numerous spheroids, 10 to 500 μm across, which appear to have formed at high temperatures as fluids immiscible in the enclosing melt. The spheroids are distinguished from small
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea8d67777adf36981e344467657aa33a
https://doi.org/10.1007/bf00377497
https://doi.org/10.1007/bf00377497
Autor:
M. R. Dence
Publikováno v:
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 285:259-265
Large terrestrial impact craters provide structural models for the interpretation, of lunar craters and basins and petrological data for comparison with complex lunar breccias. The terrestrial examples illustrate the mixing processes operative in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::745ad1e4c41e99c450863727aaa8937a
https://doi.org/10.1098/rsta.1977.0063
https://doi.org/10.1098/rsta.1977.0063
Autor:
E. D. Waddington, M. R. Dence
Publikováno v:
Canadian Journal of Earth Sciences. 16:256-263
Skeleton Lake, Ontario (lat. 45°15′N, long. 70°27′W), contains an approximately circular depression, 3.6 km in diameter and 65 m maximum depth, which appears to truncate the regional geological and physiographic trends of the local Precambrian
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45ed26c75b7792982cfae88c8b5c4af1
https://doi.org/10.1139/e79-025
https://doi.org/10.1139/e79-025
Publikováno v:
Science. 167:594-597
Observations on the mineralogy and deformation in samples of crystalline rocks, breccias, and fines from Tranquillity Base provide evidence for magmatic and impact processes. Overall homogeneity, igneous textures, and absence of xenoliths in the crys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b7db2acb3998b5931907f9e99f100e0
https://doi.org/10.1126/science.167.3918.594
https://doi.org/10.1126/science.167.3918.594