manicouagan

South America

Image Map Carancas Aranguainha Monturaqui Campo Del Cielo Rio Cuarto Colonia Vargeao Dome Vista Alegre Serra da Cangalha Riachao Ring Santa Marta

Click on any crater.

 

 

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
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
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)