Samuele Boschi, Birger Schmitz, P. R. Heck, Anders Cronholm, C. Defouilloy, N. T. Kita, Simonetta Monechi, Alessandro Montanari, S. S. Rout, Fredrik Terfelt,
... as well as two very large impact structures, Popigai (100 km diameter) and Chesapeake Bay (40–85 ... an Ir-rich ejecta bed related to the Popigai impact event, and two smaller Ir anomalies. Recently we showed that the Popigai ejecta is associated with a significant enrichment of ... of strata outside the interval corresponding to the Popigai and Chesapeake Bay impacts, we only found 2 ... of the extraterrestrial chromite grains associated with the Popigai ejecta and confirm an H-chondritic composition. The ... Ti and V concentrations were found in the Popigai ejecta. These grains originate from Siberian Traps basalts ...
Tópico(s): Planetary Science and Exploration
2017 - Elsevier BV | Geochimica et Cosmochimica Acta
J. Whitehead, D. A. Papanastassiou, J. G. Spray, R. A. F. Grieve, G. J. Wasserburg,
... to those of tagamite melt rocks in the Popigai impact structure. They also possess Rb–Sr, TUR, ... from the 35.7 Ma, 100 km diameter Popigai impact structure of Siberia, Russia, while ruling out ... 4.1–354.0), making the association with Popigai tagamites less clear. These microkrystites may have been ... homogenization. Dark glass and felsic inclusions extracted from Popigai tagamites possess ϵ(143Nd) and ϵ(87Sr) values ... the melting of supra-basement sedimentary rocks from Popigai, or early basement melts that were ejected prior ...
Tópico(s): Planetary Science and Exploration
2000 - Elsevier BV | Earth and Planetary Science Letters
Denis Alexander Shelkov, A. B. Verchovsky, H. J. Milledge, Felix V. Kaminsky, C. T. Pillinger,
... 1–2 mm in size) from impactites of Popigai crater and five diamond samples (5–7 mm ... Y7). The carbon isotopic composition of diamonds from Popigai varies within the previously reported limits (δ 13 ... impact diamonds from Ebeliakh and diamonds extracted from Popigai crater. This could be explained by the existence of different diamond populations formed during the Popigai impact event. On the other hand, Ebeliakh diamonds ... have resulted from a separate impact event to Popigai and an alternative crater is yet to be ...
Tópico(s): Geological and Geochemical Analysis
1998 - Wiley | Meteoritics and Planetary Science
Alexander Yèlisseyev, V. P. Afanasyev, S. А. Gromilov,
... 60 large diamond aggregates were found inside the Popigai meteorite crater during washing of alluvial deposits along ... and we regard them as yakutites from the Popigai crater (YPC). The structure and optical properties of Popigai impact diamonds from the impact melt rocks (tagamites) ...
Tópico(s): High-pressure geophysics and materials
2018 - Elsevier BV | Diamond and Related Materials
Alexander Yèlisseyev, V. P. Afanasiev, А. В. Панченко, S. А. Gromilov, В. В. Каичев, Аndrey А. Saraev,
... dispersed for more than 500 km around the Popigai meteorite crater. They share many features of similarity ... vibronic system appearing in the luminescence spectra of Popigai impact diamonds (PIDs) indicates a presence of nitrogen ... Thus, both PIDs and yakutites originated during the Popigai impact event and yakutites were ejected to large ...
Tópico(s): Planetary Science and Exploration
2016 - Elsevier BV | Lithos
Birger Schmitz, Samuele Boschi, Anders Cronholm, P. R. Heck, Simonetta Monechi, Alessandro Montanari, Fredrik Terfelt,
... 36 Ma ago the 90–100 km large Popigai and Chesapeake Bay impact structures formed within ∼10– ... 250 μm) associated with the ejecta from the Popigai impactor. The grains occur in the ∼40 cm ... most likely originate from the regoliths of the Popigai and the Chesapeake Bay impactors, respectively. These asteroids ... be used to test this hypothesis. If the Popigai and Chesapeake Bay impactors represent two different types ...
Tópico(s): Planetary Science and Exploration
2015 - Elsevier BV | Earth and Planetary Science Letters
Alexander Yèlisseyev, Gengchen Meng, V. P. Afanasyev, N. P. Pokhilenko, В. А. Пустоваров, A. Isakova, Zheshuai Lin, H. Q. Lin,
Impact diamonds from Popigai astrobleme were found to consist of different carbon phases: cubic and hexagonal diamond with sp3 bonding according to X- ... 10 to 100 nm. Fundamental absorption edge for Popigai impact diamonds is shifted ~ 0.5 eV to ... spectra were elucidated by the first-principles studies. Popigai impact diamonds demonstrate a broad-band luminescence in ...
Tópico(s): Geological and Geochemical Analysis
2013 - Elsevier BV | Diamond and Related Materials
With a diameter of ∼100 km, Popigai in Northern Siberia is the largest crater known in the Cenozoic. The concentrations in platinum group elements (PGE) were analyzed in twenty ... Pd or Ru/Rh vs. Pd/Ir, the Popigai impactor is clearly identified as an ordinary chondrite ... Objects (NEOs). The ordinary chondrite origin of the Popigai projectile supports an asteroidal origin for the late ...
Tópico(s): Geological and Geochemical Analysis
2005 - Elsevier BV | Geochimica et Cosmochimica Acta
... Canadian Shield in the Light of Theoretical Models.- Popigai Crater: General Geology.- Geophysics and Petrophysics of the Popigai Impact Structure, Siberia.- U-Pb Analyses of Zircons from the Popigai Impact Structure, Russia: First Results.- Impact-Generated Hydrothermal Systems: Data from Popigai, Kara, and Puchezh-Katunki Impact Structures.- Geology and ...
Tópico(s): Geological Studies and Exploration
2002 - Springer Nature | Impact studies
Christian Koeberl, В. Л. Масайтис, George I. Shafranovsky, I. Gilmour, F. Langenhorst, Marcus Schrauder,
Research Article| November 01, 1997 Diamonds from the Popigai impact structure, Russia Christian Koeberl; Christian Koeberl 1Institute ... Gilmour, Falko Langenhorst, Marcus Schrauder; Diamonds from the Popigai impact structure, Russia. Geology 1997;; 25 (11): 967– ... in impact melt rocks and breccias at the Popigai impact structure in Siberia. The diamonds preserve the ...
Tópico(s): Geological and Geochemical Analysis
1997 - Geological Society of America | Geology
Valentin Afanasiev, S. А. Gromilov, В. М. Сонин, Egor Egor, А. А. Чепуров,
The concentration of diamond-bearing tagamite from the Popigai impact crater produces large amounts of graphite in ... converted to diamond at the time of the Popigai impact or is a retrograde form resulting from ...
Tópico(s): Geology and Paleoclimatology Research
2019 - | TURKISH JOURNAL OF EARTH SCIENCES
François S. Paquay, Greg Ravizza, Rodolfo Coccioni,
... change in seawater 187Os/188Os caused by the Popigai impact event. Higher in the Massignano section, two ... 188Os begins to decline in advance of the Popigai impact event. At Massignano this decline coincides with ... decline that occurred ∼1 million year after the Popigai impact event.
Tópico(s): Paleontology and Stratigraphy of Fossils
2014 - Elsevier BV | Geochimica et Cosmochimica Acta
A. El Goresy, Leonid Dubrovinsky, Philippe Gillet, S. Mostefaoui, G. Graup, Michael Drakopoulos, Alexandre Simionovici, Varghese Swamy, В. Л. Масайтис,
... crystalline polymorph of carbon in gneisses from the Popigai crater, Russia. The new species occupies the interior ... choc naturel dans les gneiss du cratère de Popigai en Russie a produit une forme cristalline nouvelle ...
Tópico(s): Diamond and Carbon-based Materials Research
2003 - Elsevier BV | Comptes Rendus Géoscience
... the hydrothermal mineralization in large Russian impact structures — Popigai (diameter: 100 km), Kara (65 km), and Puchezh- ... anhydrite zone can be distinguished. In Kara and Popigai, where the hydrothermal alteration affected mainly the impact ...
Tópico(s): Geological and Geochemical Analysis
2002 - Springer Nature | Impact studies
Mark Pilkington, L. J. Pesonen, R. A. F. Grieve, В. Л. Масайтис,
The 100-km-diameter Popigai structure was formed 35.7 Ma ago in a target consisting of ~1–1.5 km of Proterozoic, Cambrian and ... structure. Both the gravity and magnetic signatures of Popigai differ from those of most other impact structures ...
Tópico(s): earthquake and tectonic studies
2002 - Springer Nature | Impact studies
... number of finds will increase with time. The Popigai crater, Northern Siberia, where impact diamonds were first ... corroded. Diamond‐bearing tagamites and suevites in the Popigai crater interior occur as extended lens and sheets ...
Tópico(s): Geological and Geochemical Analysis
1998 - Wiley | Meteoritics and Planetary Science
R. J. Bottomley, R. A. F. Grieve, Derek York, В. Л. Масайтис,
... have been reported for the 100-km-diameter Popigai impact structure1,2 on the Anabar shield, central ... Italy10. Here we report age determinations of several Popigai impact melt rocks using the 40Ar–39Ar step ...
Tópico(s): Geology and Paleoclimatology Research
1997 - Nature Portfolio | Nature
... Ma-old and ~100-km-wide multi-ring Popigai is a well-preserved impact structure at the ... contribution outlines the geological and petrological features of Popigai.
Tópico(s): Methane Hydrates and Related Phenomena
2002 - Springer Nature | Impact studies
Jaroslav Klokočník, Jan Kostelecký, Aleš Bezděk, G. Kletetschka, Hana Staňková,
... a 200 km suspected impact crater Kotuykanskaya near Popigai, Siberia, Russia. We use the gravity aspects (gravity ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2020 - Nature Portfolio | Scientific Reports
Woohyeon Baek, S. А. Gromilov, Artem V. Kuklin, Evgenia A. Kovaleva, А.А. Федоров, A. S. Sukhikh, Michael Hanfland, Vladimir A. Pomogaev, Iuliia Melchakova, Paul Avramov, Kirill V. Yusenko,
... rich impact diamonds from one of the largest Popigai impact crater (Northern Siberia) with a high concentration ...
Tópico(s): Geological and Geochemical Analysis
2019 - American Chemical Society | Nano Letters
... book highlights the most prominent research on the Popigai meteorite crater the 6th largest known impact structure ...
Tópico(s): Astro and Planetary Science
2018 - Springer Nature | Impact studies
Hiroaki Ohfuji, Motosuke Nakaya, Alexander Yèlisseyev, V. P. Afanasiev, Konstantin D. Litasov,
... to those of the impact diamonds from the Popigai crater located in the central Siberia and strongly ... a product of long–distance outburst from the Popigai crater, which has been inferred merely from the ...
Tópico(s): Diamond and Carbon-based Materials Research
2017 - Japan Association of Mineralogical Sciences | Journal of Mineralogical and Petrological Sciences
Alexander Yèlisseyev, A. Y. Khrenov, V. P. Afanasiev, В. А. Пустоваров, S. А. Gromilov, А. В. Панченко, N. P. Pokhilenko, Konstantin D. Litasov,
Impact diamonds (IDs) from the Popigai crater are aggregates of nanoparticulate graphite and cubic and hexagonal diamonds. IDs demonstrate broad-band emissions at 3.05, 2.8, ...
Tópico(s): Astro and Planetary Science
2015 - Elsevier BV | Diamond and Related Materials
S. V. Goryaĭnov, Anna Y. Likhacheva, Sergey V. Rashchenko, A. A. Shubin, В. П. Афанасьев, N. P. Pokhilenko,
... to characterize impact carbonaceous rocks excavated from the Popigai crater (Siberia). The deconvolution of the first‐order ...
Tópico(s): Astro and Planetary Science
2014 - Wiley | Journal of Raman Spectroscopy
Т. Г. Шумилова, Viktória Kovács Kis, Viktor Masaitis, С. И. Исаенко, Б. А. Макеев,
... and irregular massive impact diamond grains from the Popigai astrobleme have been investigated by Raman spectroscopy and ...
Tópico(s): Fullerene Chemistry and Applications
2014 - Elsevier BV | European Journal of Mineralogy
Jaroslav Klokočník, Jan Kostelecký, I. Pešek, Pavel Novák, C. A. Wagner, Josef Sebera,
... appear to make them multiple impact sites. At Popigai, Siberia, the series of circular features fall in ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2010 - Copernicus Publications | Solid Earth
... Ma) and within the age uncertainties for the Popigai (35.7 ± 0.2 Ma) and Chesapeake Bay ( ... derive from a unique source related to the Popigai impact crater. The morphologies and Cr compositions of ...
Tópico(s): Astro and Planetary Science
2006 - Wiley | Meteoritics and Planetary Science
... of the two largest craters in the Cenozoic, Popigai and the Chesapeake Bay. However, new platinum-group element analyses indicate that Popigai was formed by the impact of an L- ...
Tópico(s): Planetary Science and Exploration
2004 - American Association for the Advancement of Science | Science
Giovanni Pratesi, Alessandro Lo Giudice, S. A. Vishnevsky, C. Manfredotti, Curziο Cipriani,
Twenty impact diamond samples from the Popigai, Ries, and Lappajärvi astroblemes were analysed using cathodoluminescence (CL) at room temperature (RT). Five of the samples were further investigated at liquid ...
Tópico(s): High-pressure geophysics and materials
2003 - Mineralogical Society of America | American Mineralogist
... during the late stages of formation of the Popigai impact crater, Siberia, are described. These deposits are ...
Tópico(s): Methane Hydrates and Related Phenomena
2003 - Springer Nature | Impact studies