 | BRANDT, DION, REMOLD, WOLF UWE, FRANZSEN, ALAN J., KOEBERL, CHRISTIAN, WENDORFF, LUTZ (1998) Geophysical profile of the Roter Kamm impact crater, Namibia. Meteoritics & Planetary Science, 33 (3) 447-453 doi:10.1111/j.1945-5100.1998.tb01649.x | Journal (article/letter/editorial) | | USA. Geophysical profile of the Roter Kamm impact crater, Namibia DION BRANDTI* WOLF UWE REIMOLDI, ALANJ...Survey ofNamibia, P.O. Box 2168,Windhoek 9000,Namibia *Correspondence author's e-mail address: 065dion@cosmos...profiles across the Roter Kamm impact crater in the southern Namib desert of Namibia. A s the traverses...studies did not extend sufficiently beyond the crater rim, it had not been possible to adequately determine...near-symmetrical anomaly was obtained over the crater center. This anomaly conforms to the results expected |  | Koeberl, Christian, Hartung, Jack B., Kunk, Michael J., Klein, Jeffrey, Matsuda, Jun-Ichi, Nagao, Keisuke, Reimold, Wolf Uwe, Storzer, Dieter (1993) The age of the Roter Kamm impact crater, Namibia: Constraints from 40Ar-39Ar, K-Ar, Rb-Sr, fission track, and 10Be-26Al studies. Meteoritics, 28 (2) 204-212 doi:10.1111/j.1945-5100.1993.tb00758.x | Journal (article/letter/editorial) | | Printed in USA. The 82e of the Roter Kamm impact crater, Namibia: Constraints from loAr·39Ar, K·Ar...2.S kin diameter Roter Kamm impact crater is Ioc:ated in the Namib desert in Namibia. 1he impacthas occurred...Previous geological field evidence sUggested a crater age of about 5-10 Ma. In order to \lODStrain this...rocks (granites, granodiorites) esposed at the crater rim and studied the Rb-Sr, K-Ar, 40Ar_39Ar, and...for the Roter Kammcrater is therefore 3.7 ± 03 Ma. INTRODUcnON THE ROTER KAMM IMPACf CRATER IS WCATED |  | | Journal (article/letter/editorial) | | Pergamon 0016-7037(94)00067-O Roter Kamm impact crater, Namibia: Geochemistry of basement rocks and...revised form February I, 1994) Abstract-The Roter Kamm crater in the southern Namib Desert has previously...identified as an impact structure on the basis of crater morphology and the presence of impact melt breccias...twenty-eight basement and breccia samples from the Roter Kamm crater. Based on chemical data for target lithologies...breccias we suggest that the crater was formed in a two-layer target region: an upper layer of Gariep metasediments |  | | Journal (article/letter/editorial) | | isotopic analysis of breccia veins from the Roter Kamm crater, Namibia, and implications for their thermal history...the 2.5-km-wide and 3.7-Ma-old Roter Kamm crater in southwest Namibia are cut by breccia veins that macroscopically...inclusions, quartz precipitation, shock effects, and crater degradation, suggest that the veins reached maximum...results. Breccia veins occurring in the Roter Kamm crater of SW Namibia were originally described as pseudotachylytes...these data in terms of the thermal history of the Roter Kamm breccia veins. The results bear on general understanding |  | Thomas, Robert J., Macey, Paul H., Spencer, Christopher, Dhansay, Taufeeq, Diener, Johann F.A., Lambert, Christopher W., Frei, Dirk, Nguno, Anna (2016) The Sperrgebiet Domain, Aurus Mountains, SW Namibia: A ∼2020–850Ma window within the Pan-African Gariep Orogen. Precambrian Research, 286. 35-58 doi:10.1016/j.precamres.2016.09.023 | Journal (article/letter/editorial) | | Manuscript The Sperrgebiet Domain, Aurus Mountains, SW Namibia: a ∼2020 to 850 Ma window within the Pan-African...Nguno, The Sperrgebiet Domain, Aurus Mountains, SW Namibia: a ∼2020 to 850 Ma window within the PanAfrican... The Sperrgebiet Domain, Aurus Mountains, SW Namibia: a ~2020 to 850 Ma window within the Pan-African...Geological Survey of Namibia, Windhoek, Namibia Abstract The Aurus Mountains in SW Namibia form a tectonic...sinistral transpressive tectonic regime. Keywords: Namibia, Sperrgebiet geochronology, Namaqua, Pan-African |  | | Journal (article/letter/editorial) | | RaTER KAMM: EVIDENCE FOR AN IMPACT ORIGIN R. F. Fudali Department of Mineral Sciences The Smithsonian...20560 Rater Kamm, located in the Namib Desert of SW Africa. is an 8.000-foot-diameter crater developed...and outside the crater and the only significantrock exposures are high in the crater rim. In most cases...environment and may represent remnants of ejecta from the crater formation. There is a strong negative residual...the rim rock exposures. An impact origin for the crater is strongly suggested by all the evidence to date |  | | Journal (article/letter/editorial) | | zones indicate that epidote, ferroamphiboles, and magnetite were formed first, followed by chlorite, ankerite...positive Eu anomaly in the epidote-amphibole-magnetite rich transitional zone, and HREE enrichment with...muscovite, actinolite, and K-feldspar, and accessory magnetite, chalcopyrite, apatite, ilmenite, TiO2-minerals...plagioclase, and chlorite and accessory albite, pyrite, magnetite, and apatite. Plagioclase (An23–31) is partly...of the Okote area are dominantly pyrite, minor magnetite, chalcopyrite, Geochemistry of gold mineralization |  | | Journal (article/letter/editorial) | | previously recognized, with evidence for four or five crater-forming impacts onto Mars. This history of repeated...or rebound flow of rock beneath a large impact crater. An intense thermal metamorphism followed D1 and...ALH 84001. For example, the submicron rounded magnetite grains in the carbonate globules could be contemporaneous...with carbonate deposition, whereas the elongate magnetite grains, epitaxial on carbonates, could be ascribed...inherent in new data (e.g., origin of submicron magnetite grains in the carbonate globules) might be resolved |  | | Journal (article/letter/editorial) | | omphacite, quartz, K-feldspar, albite, epidote, magnetite and sulphide (Fig. 5b,c). The matrix is dominated...have pinkish brown cores clouded by oriented magnetite/ ilmenite needles or particles and transformed...showing quartz, K-feldspar, albite, epidote, magnetite, chalcocite, Cr-bearing sulvanite (Cr-slv) and...garnet in granitic gneisses of the Roter Kamm impact crater in Namibia (Degenhardt et al., 1994). The breccia...Ti–clinohumite–garnet–pyroxene rocks in the southern Su-Lu region and interpreted to result from material exchange |  | Lamali, A., Rochette, P., Merabet, N., Abtout, A., Maouche, S., Gattacceca, J., Ferrière, L., Hamoudi, M., Meziane, E.H., Ayache, M., , (2016) Geophysical and magneto-structural study of the Maâdna structure (Talemzane, Algeria): Insights on its age and origin. Meteoritics & Planetary Science, 51 (12) 2249-2273 doi:10.1111/maps.12715 | Journal (article/letter/editorial) | | Eocene limestones. Although accepted as an impact crater on the basis of alleged observations of shock-diagnostic...formation process and its age. For this purpose, the crater was investigated using a multidisciplinary approach...suggest the presence of this material within the crater at a depth of about 100 m below the surface. Using...shallowest magnetized zone in the central part of the crater is identified as a recently deposited material...magnetic carrier although often associated with magnetite. A primary magnetization is inferred from a stable |  | | Journal (article/letter/editorial) | | magmatism formation: An example from the Georgetown region of Northeastern Australia .......................discussion of “Anomalous quartz from the Roter Kamm impact crater, Namibia: Evidence for post-impact hydrothermal...GOTZINGER, and K. FREDRIKSSON:Quartz at the Roter Kamm crater and post-impact hydrothermal activity: A Reply...Formation, Hamersley Range, 5q12): 3461 Georgetown region, Queensland, 54( 1): 183 0, phosphate, kangaroo...3435 Lake St. Martin, ~nit~~ 54(l): 2093 Roter Kamm, Namibia, 54( 11): 3247, 3249 shock metamorphism, |  | | Journal (article/letter/editorial) | | magmatism formation: An example from the Georgetown region of Northeastern Australia .......................3245 . . . 3246 quartz from the Roter Kamm impact crater, Namibia: Evidence for post-impact 3247 __...GUTZINGER, and K. FREDRIKSSON:Quartz at the Roter Kamm crater and post-impact hy&ot&mal activity: A Reply...Formation, Hamersley Range, 54( 12): 346 1 Georgetown region, Queensland, 54( 1): 183 0, phosphate, kangaroo...Lake St. Martin, Manitoba, 54(7): 2093 Koter Kamm, Namibia, 54( 11): 3247, 3249 shock metamorphism, effect |  | | Journal (article/letter/editorial) | | biological record. This paper addresses Africa’s impact crater record and the stratigraphic record of impact cratering...relatively young lunar crater Giordano Bruno, 22 km in diameter. This crater is relatively young, as...observations of the play of shadows across the rims of crater features, as a result of the Moon’s rotation around...unable to recognize the true significance of these crater structures as the result of catastrophic impact...Impact Cratering studies, at the Tswaing meteorite crater, South Africa. Dr. Carolyn Shoemaker, herself famous |  | | Book | | evidence of what the Black Stone might be. largest crater measures 100 m across. This smaller as a stony...fact that it can be broken easily shows that 1l-m crater was found only recently. u it 1s Not an iron...years ago. The craters were discovered in 1932 in a region known as Rub’al Khali, meaning ‘the Empty Quarter’...suggested that it is glass from a meteorite impact crater. Approximately 1100 km east of Mecca, at Wabar...description leaves no doubt that what the people of the region witnessed was the fall of ameteorite. When it comes |  | | Journal (article/letter/editorial) | | AFRICA: AN UNUSUAL, APPROXIMATELY 90-KILOMETER CRATER WITH ASSOCIATED MULTIRING STRUCTURES AND EARLY...opportunity to study the anatomy of a possible multiring crater. This structure is not exposed, but is easily drilled...percussion and diamond drill boreholes sited within the crater. Additional data was acquired from the stratigraphic...investigation shows that the core of the Morokweng crater is magnetically very complex and occupied by a...-90 km, up to -170 km), have their center in the crater and define a broad crustal uplift known as the |  | | Journal (article/letter/editorial) | | Most metal/sulphide inclusions have altered to magnetite, pentlandite and taenite. The taenite in the one...Broad-band photometry in the visual wavelength region has been used to divide the asteroids into 14 "taxonomic...38 well documented finds are recorded from the region, comprising three irons, one stony-iron (pallasite)...associated with the description of meteorites from the region. In the past (e.g. McCall and Cleverly, 1970),...along the Trans Australian Railway bisecting the region from west to east. Additionally, there are a few |  | | Book | | Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits...__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed with an...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |  | | Journal (article/letter/editorial) | | techniques in the middle-infrared, the spectral region most diagnostic of composition; and laboratory...the form of elemental enhancements in the impact region. One such analysis is shown in Fig. I, which shows...lie in the ecliptic plane outside the planetary region, providing a source for short period comets. PIXE...relied on qualitative descriptions of martian impact crater degradation. The present study is quantifying the...the current crater shape to those values expected for a fresh crater of identical size. Crater diameters |  | | Book | | illustration: Radar image of the Gosses Bluff impact crater central peak (Australia) acquired in spotlight...Atlas will be very useful to better understand crater formation and evolution and provides a new research...research method that may, hopefully, help new crater findings. Getting through these pages, it is then both...Maria Libera Battagliere, and Maria Virelli Roter Kamm, Namibia . . . . . . . . . . . . . . . . . . . . ...estimated that the meteorite that formed the Chicxulub crater (Fig. 1), and started the great mass extinction |  | | Book | | its satellites) to be modified by numerous large crater structures, then we should look for such scars...Reconsideration of, the Dalgaranga Meteorite and Crater, Western Austra l i a Mineralog. Mag. 35:476--4...82 ( 1965) 39 47 MADIGAN, C. T . : The Boxhole Crater and Huck itta Meteorite Royal Soc. South Australia...F. C. MICHEL: 10 MILTON, Structu re of a Ray Crater at Henbury, Northern Territory, Australia U. S...11 SEDDON, G.: 12 SHOEMAKER, E. M.: Meteor Crater: A Geological Debate /our. Geo/. Soc. Aust. 1 7 |  | | Journal (article/letter/editorial) | | of -60 em- for craters> I to 2 urn in size. The crater density is much lower on the trailing edge due...Cambridge, MA 02138, USA. A location for the KIT impact crater has been sought for more than a decade. In the...impact crater lying off the southern coast of western Cuba (3). The locus of this putative crater is some...some Abstracts 1350 km north of the crater site in the Colombian basin proposed by Hildebrand and Boynton...explained by plate tectonic modification of an impact crater and its environs. The area of Cuba was once attached |  | | Journal (article/letter/editorial) | | other than the suggestion that the ice in this region is probably close to a steady state condition....of continental volcanic rocks) whereas that of crater ejecta is found to be 7.8E-21 g (0.6% of the total...However most of shocked quartz obviously resided in crater cavities and did not take part in sedimentary processes...element profiles with spatial resolution in the !Lm region and sensitivities of a few ppm has been demonstrated...requires (6 x 1019 J)/€m' However, the near-coma region would have to carry a significant fraction of Halley's |  | | Book | | sections, where the distal ejecta from Chicxulub crater is well preserved. Scientifically, the workshop...Impact effect on climate and biosphere Ejecta-crater correlation Impact signatures and geochemical...terrestrial impact crater as a mechanism for generating melt to auto-obliterate the crater. They also model...Popigai impact crater, Siberia. Three types of ejecta facies occur in the upper parts of the crater fill: lithic...at the study and analysis of the Boltysh impact crater in the Ukraine, which initially was thought to |  | | Book (edition) | | Pontlyfni f * Winona * C Yamato 75003 C? Bench Crater Ivuna + Orgueil + * Revelstoke f Tonk + CM2 Adelaide...Tugalin-Bulen + Moon Oceanus Procellarum Bench Crater Morocco Douar Mghila + * Mrirt Garhi Yasin f...Ireland County Londonderry Bovedy + * Norway Namibia Aus Bushman Etosha Land Gibeon * Gobabeb Hoba...Kifkakhsyagan Kikino + * Zaisan + USSR : Altay region Kazan SSR Krasnoi-Ugol + * Pavlodar (pallasite)...Polujamki f Armenian SSR Erevan } : Astrakhan region Repeev Khutor + Azerbaydzhan SSR eee i ulp Yardymly |
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