Kamensk - Hypervelocity Impact Crater
Alternate Names | N/A |
Coordinates |
48° 21' 0" N; 40° 30' 0" E Notes
|
Country | Russia |
Region | Rostov |
Date Confirmed | 1980 Notes
|
Buried? |
Yes Notes
|
Drilled? |
Yes
Notes
|
Target Type |
Sedimentary Notes
|
Sub-Type | Carbonate, Marl, Sandstone, Siltstone |
Apparent Crater Diameter (km) | 25 km |
Age (Ma) | 50.37 ± 0.40 Notes :
Method :
|
Impactor Type |
Not determined
Notes
|
Advanced Data Fields
Notes

Local Language
N/A
Erosion
5
- The crater-fill products are partially preserved, with Cretaceous or younger deposits eroded away. A small amount of breccia remains compared with the large extent of fractured basement complex (Masaitis et al., 1980).
Final Rim Diameter
Unknown
Apparent Rim Diameter
25 km
- (Masaitis et al., 1980) (Movshovich and Milyavskii, 1986).
Rim Reliability Index
3
- Consists of a central uplift surrounded by a sediment-filled trough, all covered by 200 to 300 m of sediment (Masaitis et al., 1980).
Crater Morphology
Complex
Central Uplift Diameter
Unknown
Central Uplift Height
Unknown
Uplift Reliability Index
Unknown
Structural Uplift
Unknown
Thickness of Seds
Unknown
Target Age
Palaeozoic
Mesozoic
Marine
No
Impactor Type
Not determined
- The breccia contains excess Ir and Ni (Movshovich and Milyavskii, 1986).
Other Shock Metamorphism
Planar features
- See Fig. 5: Quartz grain with three systems of planar elements (Movshovic and Milyanskiy, 1991).
Shatter Cones
Yes
- Shatter cones in limestones and sandstones and rarely in marls, up to 10 cm high Masaitis et al.,1980) (Blank and Val'ter, 1983). Shatter cones in clasts from allogenic breccia [recovered in drillcores] (Movshovich and Milyavskii, 1986). Presence of shatter cones (Masaitis, 1999). Shatter cones shown in drillholes in Fig. 3 (Movshovic and Milyanskiy, 1991).
Planar Fractures
No
Planar Deformation Features
No
- No PDF observed (Masaitis et al., 1980) (Blank and Val'ter, 1983).
Diaplectic Glass
Yes
- Clasts of diaplectic and coesite-bearing quartz are also found (Masaitis, 1999).
Coesite
Yes
- (Blank and Val'ter, 1983). Clasts of diaplectic and coesite-bearing quartz are also found (Masaitis, 1999).
Stisovite
No
Crater Fill
LB, MB
- In addition to lithic breccias, (Izett et al., 1994) also report impact glass. Small irregular lenses of "suevite-like rocks" (melt-bearing breccias) with vesicular, partly altered glass, are found within the lithic breccias (Masaitis, 1999).
Proximal Ejecta
Unknown
Distal Ejecta
Unknown
Dykes
Unknown
Volume of Melt
Unknown
Depth of Melting
Unknown
References
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(1982) Debris of a rock with coesite in breccia from the Kamensk Astrobleme, Rostov, USSR, Mineralogicheskiy Zhurnal 4(5), p. 21-28, Akademiya Nauk Ukrainy, Kiev, url
(1985) The age of the Kamensk astrobleme and certain peculiarities of its structure, Geologicheskiy Zhurnal (Kiev, 1968) 45(3), p. 67-75, Naukova Dumka, Kiev
(1990) Morphology and inner structure of the Kamensk and Gusev astroblemes, Impact Craters on MZ-KZ Boundary, Masaitis VL (ed.), p. 110-146, Leningrad: Nauka Press, url
(1994) Eocene age of the Kamensk buried crater of Russia, LPI Contribution 825, p. 55-56, Lunar and Planetary Institute, Houston, TX, url