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Ust-Kara Crater

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Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE247-p233
... The Kara impact structure, on the Kara Sea coast of Russia, consists of two adjacent impact craters, the Kara and the Ust-Kara craters. The Kara crater is located on land and has a pre-erosion diameter of about 65 km, whereas the Ust-Kara crater is mostly submarine and has only limited onshore...
Journal Article
Journal: Geology
Published: 01 January 1990
Geology (1990) 18 (1): 50–53.
.... The Kara, USSR, impact structure consists of two adjacent large impact craters (a rare and interesting geologic phenomenon), and it has been suggested that this twin impact structure might be related to the K/T boundary event. However, newly determined 40 Ar/ 39 Ar and K-Ar ages presented here suggest...
Journal Article
Published: 01 September 2007
Journal of the Geological Society (2007) 164 (5): 923–936.
... and accuracy of radiometric dates for large igneous provinces (LIPs), for which there is now a consensus on the peak eruption times over the last 250 Ma. In parallel there has been a more gradual improvement in the radiometric dates for craters formed by hypervelocity impacts (HVIs) of asteroids and comets...
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Journal Article
Journal: Economic Geology
Published: 01 November 2002
Economic Geology (2002) 97 (7): 1541–1562.
...D. E. Ames; J. P. Golightly; P. C. Lightfoot; H. L. Gibson Abstract The 1.85 Ga Sudbury structure is the largest, well-preserved, exposed example of a terrestrial impact crater; it contains world-class Ni-Cu-platinum-group element (PGE) ores associated with the igneous component. A new...
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Journal Article
Published: 27 November 2018
Journal of the Geological Society (2019) 176 (2): 209–224.
... uplift and transformation of composing rocks . Meteoritics , 25 , 383 . Mashchak , M.S. 1991 . Geologic setting in Kara and Ust’-Kara at the time of formation of the impact craters . International Geology Review , 33 , 423 – 432 , https://doi.org/10.1080/00206819109465700...
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Journal Article
Journal: Paleobiology
Published: 01 November 2008
Paleobiology (2008) 34 (4): 456–471.
... alone yielded statistically elevated extinction frequencies. Although the magnitude of extinction was uncorrelated with the size of the associated flood basalt or impact structure, crater diameter did correlate with extinction percentage when volcanism and impact coincided. Despite this result, case...
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Journal Article
Published: 01 January 2018
European Journal of Mineralogy (2018) 30 (1): 61–76.
... nanostructural features and suggest a specific mechanism of Kara diamond formation. The twin impact craters Kara and Ust’-Kara are located in the northeastern European part of Russia belonging to the northeastern section of the Pay-Khoy Ridge structure ( Fig. 1 ). The craters have diameters of 65...
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Series: Society of Exploration Geophysicists Distinguished Instructor Series
Published: 01 January 2006
DOI: 10.1190/1.9781560801979.ch1
EISBN: 9781560801979
... kullanılır. wave shape kit 'e bk. Hava tabancaları sondaj kuyularına indirilebilecek ya da gömülebilecek biçimde değiştirilmişlerdir. Bu değişiklikler çamur, kum ve benzerinin içeri girmesini ve tıkanmasını önler. Aynı zamanda kara sismiği enerji kaynağı olarak yüzeye yerleştirilen su torbaları içinde de...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1990
AAPG Bulletin (1990) 74 (10B): 240–256.
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Journal Article
Journal: SEG Discovery
Published: 01 July 2001
SEG Discovery (2001) (46): 1–52.
...-arc basin sep­ arates the arc and the East European cra­ ton. On the basis of airborne magnetic data analysis we suggest that the Mugodzhar-Rudny Altai arc extends from Ust-Yurt in the south Urals to the middle and North Urals, from where it turns / ' \ ' Ural platinum belt Cu-Mo porphyry belts...