manicouagan

South America

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Crater Name
Location
Latitude
Longitude
Diameter (km)
Age (Ma)*
Exposed
Drilled
Target Rock**
Bolide Type***
Brazil
S 16° 47'
W 52° 59'
40
254.7 ± 2.5
Y
N
M
-
Argentina
S 27° 38'
W 61° 42'
0.05
< 0.004
Y
Y
M
Coarse Octahedrite to Granular Hexahedrite
Peru
S 16° 40'
W 69° 03'
0.0135 km
0.000007
Y
N
S
C
Brazil
N 30° 12'
W 56° 32'
13.5
≤135
Y
N
M
-
Brazil
S 23° 52'
W 46° 43'
3.6
5-36
Y
Y
M
-
Chile
S 23° 56'
W 68° 17'
0.46
< 1
Y
N
C
IAB
Nicaragua
S 13° 13'
W 85° 57'
14
0.815±0.011
Y
N
C 
-
Brazil
S 7° 43'
W 46° 39'
4.5
< 200
Y
N
S
-
Argentina
S 32° 52'
W 64° 14'
4.5
< 0.1
Y
N
M
Chondrite (H)
Brazil
S 10°10'
W45° 15'
10
66-100
Y
N
M
-
Brazil
S 8° 5'
W 46° 52'
12
< 300
Y
Y
S
-
Brazil
S 26° 50'
W 52° 07'
12
< 70
Y
N
M
-
Brazil
S 25° 57'
W 52° 41'
9.5
< 65
Y
N
-
-

* pre-1977 K-Ar, Ar-Ar and Rb-Sr ages recalculated using the decay constants of Steiger and Jager (1977) Ages in millions of years (Ma) before present.

** Abbreviations: C - Crystalline Target; C-Ms - Metasedimentary Target; M - Mixed Target (i.e.sedimentary strata overlying crystalline basement); S - sedimentary target (i.e. no crystalline rocks affected by the impact event). From Osinski. G. R., Spray J. G., and Grieve R. A. F. 2007. Impact melting in sedimentary target rocks: A synthesis. In The Sedimentary Record of Meteorite Impacts, Geological Society of America Special Paper. Editors: Evans K. Horton W., King D., Morrow J., and Warme J. Geological Society of America: Boulder, in press.

***From Koeberl,C. Identification of meteoritic components in impactites. 1998, Koeberl, C. The Geochemistry and Cosmochemistry of Impacts. 2007 and PASSC Files. (IAB, IIIAB, IIIB, IIID - Iron Meteorite)