Meteorite Impact References by Location
                     Morocco through Sweden

Cochise College 
Meteorites and Impacts
Geology Home Page
Collected by Roger Weller

wellerr@cochise.edu
return to: Meteorite Impact References
last edited: 11/28/15 

Siljan Crater                                                                                                                                                         Google Earth 


Morocco-Michlifen

*lat: 32 deg. 0 min. N, long: 3 deg 0 min E

*diameter 1.9 km

 

Poland-Morasko

*lat: 52 deg. 29 min. N, long: 16 deg. 54 min. E

*7 impact sites

*diameter of largest is 100 meters.

 

Saudi Arabia-Wabar

*lat: 21 deg. 30 min. N, long: 50 deg. 28 min. E

* 2 impact sites

*diameter of largest is 97 m

*Chao, E.C.T., Fahey, J.J., and Littler, J., 1961, Coesite from Wabar Crater near Al Hadida, Arabia:

Science, v.33, p. 882-883.

*Cohen, A.J., Bunch, T.E., and Reid, A.M., 1961, Coesite discoveries establish cryptovolcanics as fossil meteorite craters:

Science, v.134, p. 1624-1625.

 

South Africa-Bushveld Complex

*Bucher, W.H., 1963, Cryptoexplosion structures caused from without or from within the Earth?

(astroblemes" or "geoblemes?): Am. Jour. Sci., v.261, p.597-649.

*Cousins, C.A., 1960, The structure of the mafic portion of the Bushveld igneous complex (with discussion):

Geol. Soc. South Africa Trans., v.62, p. 179-201.

*Daly, R., 1928, Bushveld igneous complex of the Transvaal: GSA Bull., v.39, p. 703-768.

*Davies, R.D., Allsopp, H.L., Erlank, A.J., and Manton, W.J., 1969, Sr-isotopic studies on various layered mafic intrusions in southern Africa:

in- D.J. Visser and G. von Gruenewaldt, eds., Symposium on the Bushveldt complex and other layered intrusions,

Spec. Publ. Geol. Soc. S. Africa, v.1, p. 576-593.

*Dietz, R.S., 1963, Cryptoexplosion structures-a discussion: Am. Jour. Sci., v.261, p. 650-664.

*Glikson, A.Y., 1976, Earliest Precambrian ultramafic-mafic volcanic rocks-ancient oceanic crust or relic terrestrial maria?:

 Geology, v.4, p. 201-205.

*Hamilton, W., 1970, Bushveld Complex-product of impacts?: Geol. Soc. South Africa Spec. Pub. I, p. 367-374.

*Mc Call, G.J.H., 1964, Are cryptovolcanic Structures due to meteoric impact?: Nature, v.201, n.4916, p. 251-254.

*Rhodes, R.C., 1975, New evidence for impact origin of the Bushveld complex, South Africa: Geology, v.3, p. 549-554.

 

South Africa-Lalkkop

*lat: 32 deg. 43 min. S, long: 24 deg. 34 min. E

*diameter: 640 meters

*age: less than 200 mya

 

South Africa-Pretoria Salt Pan

*lat: 25 deg. 30 min. S, long: 28 deg 0 min. E

*diameter: 1 km

*age: less than 1 mya

 

South Africa-Reitz Ring

*lat: 27.5 deg. S, long: 28.2 deg. E  (or 27.9 deg S and 28.6 deg. E)

*diameter: rings, 350 km and 525 km

*age: over 3 bya

*Hardgraves, R.B., and Fuller, A.O., 1981, The Reitz ring- a possible circular structure, 350-500 km in diameter:

South Africa Precambrian Research, v.14, p. 99-106.

 

South Africa-Vredefort

*lat: 27 deg. 0 min. S, long: 27 deg. 30 min. E

*diameter: 140 km

*age: 1970 +/- 100 mya

*Abat, H.M., and Mayer, J.J., 1989, Megascopic planar shock fracture in the Vredefort structure-a potential time marker?:

Tectonophysics, v.162, n.3-4, p. 265-276.

*Alexander, S.S., and Hawk, J.H., 1971, The use of shatter cones to estimate the energy of meteorite impacts (abstr.),

EOS (Trans. AGU), v.52, n.4, p. 264.

*Bishopp, D.W., 1962, The Vredefort Ring- Jour. Geology, v.70, p. 500-502.

*Brink, A.B.A., and Knight, K., 1961, Shatter cones of the Vredefort Ring-discussion:

Geol. Soc. South Africa Proc., v.64, p. 157-158.

*Bucher, W.H., 1963, Cryptoexplosion structures caused from without or from within the Earth?

 ("astroblemes" or "geoblemes"?): Am. Jour. Sci., v.261, p. 597-649.

*Carter, N.L., 1965, Basal quartz deformation lamellae-a criterion for recognition of impactites:

Am. Jour. Sci., v. 263, Nov. 1965, p. 786-806.

*Carter, N.L., 1968, Meteorite impact and deformation of quartz: Science, v.160, p. 526-528.

*Daly, R.A., 1947, The Vredefort ring-structure of South Africa: Jour. Geol., v.55, p. 125-145.

*Dietz, R.S., 1961, The Vredefort ring structure- meteorite impact scar?: Jour. Geol., v.69, p. 499-516.

*Dietz, R.S., 1962, The Vredefort ring structure-a reply (to discussion by D.W. Bishopp):

 Jour. Geology, v.70, p. 502-504.

*Dietz, R.S., 1963, Cryptoexplosion structures-a discussion: Am. Jour. Sci., v.261, p. 650-664.

*Glikson, A.Y., 1976, Earliest Precambrian ultramafic-mafic volcanic rocks-ancient oceanic crust

or relic terrestrial maria?: Geology, v.4, p. 201-205.

*Hardgraves, R.B., 1961, Shatter cones in the Vredefort ring: Geol. Soc. South africa Proc., v.64, p. 147-153.

*Howard, K., and Offield, T.W., 1968, Shatter cones at Sierra Madre, Texas: Science, v.162, p. 261-265.

*Innes, M.J.S., 1964, Recent advances in meteorite crater research at the Dominion Observatory, Ottawa, Canada:

Meteoritics, v.2, n.3, p. 219-241.

*Lilly, P.A., 1981, Shock metamorphism in the Vredefort collar- evidence for internal shock sources:

Jour. Geophys. Res., v.85, p. 10,689-10,700.

*Manton, W.I., 1965, The orientation and origin of shatter cones in the Vredefort ring:

 in- Green, J., ed, Geological problems in lunar research, N.Y. Acad. Sci. Annals.

*Marce, B.D., 1945, The Vredefort structure as revealed by a gravimetric survey:

GSA Bull., v.35, p. 305-320.

*Mc Call, G.J.H., 1964, Are cryptovolcanic structures due to meteoric impact?:

Nature, v.201, n.4916, p. 251-254.

*Nel, L.T., 1927, The geology of the country around Vredefort- an explanation of the geological map:

Geol. Survey South Africa, p. 9-130

*Poldervaart, A., 1963(?), Notes on the Vredefort dome: Geol. Soc. South Africa Trans., v.65, 17 p.

*Ramsay, J.G., 1961, Shatter cones in the rocks of the Vredefort ring- discussion:

Geol. Soc. South Africa Proc., v.64, p.156-157.

*Slawson, W.F., 1976, Vredefort core- a cross-section of the upper crust?:

Geochim. et Cosmochim. Acta, v.40, p. 117-.

*Willemse, J., 1938, On the old granite of the Vredefort region and some of its associated rocks:

Geol. Soc. South Africa Trans., v.40, p. 43-119.

*Wilshire, H.G., and Howard, K.A., 19678, Structural pattern in central uplifts of cryptoexplosion structures

as typified by Sierra Madre: Science, v.162, p. 258-261.

 

South West Africa-Roter Kamm

*lat: 27 deg. 46 min., long: 16 deg. 18 min.

*diameter: 2.4 km

 

Sweden-Dellen

*lat: 61 deg. 50 min. N, long: 16 deg. 45 min. E

*diameter: 15 km

*age: 230 mya

*Svensson, N.B., 1968, The Dellen lakes, a probable meteorite impact in central Sweden:

Geol. Foeren. Stockholm Foerh., v.90, p. 309-316.

 

Sweden-Hummeln

*lat: 57 deg. 22 min. N, long: 16 deg. 15 min. E

*diameter: 1.2km

*age: 500 +/- 100 mya

 

Sweden-Mien

*lat: 56 deg. 25 min. N, long: 14 deg. 55 min. E (or 14 deg. 52 min. E)

*diameter: 5 km

*age: 118 +/- 2 mya

*Bottomley, R.J., York, D., and Grieve, R.A.F., 1978, Ar-40/Ar-39 ages of Scandinavian impact structures-I,

Mien and Siljan: Contr. Mineral. Petrol., v.68, p. 79-84.

*Svensson, N.B., 1969, Lake Mien, southern Sweden-a possible astrobleme:

Geol. Foeren. Stockholm Foerh., v.91, p. 101-110.

 

Sweden-Siljan

*lat: 61 deg. 2 min. N, long: 14 deg. 52 min. E (or 61 min. 5 deg. N and 15 deg. 0 min.E)

*diameter: 52 km

*age: 365 +/- 7 mya

*Aberg, G., and Bollmark, B., 1983, Rb-Sr dating of a postorogenic Svecokarelian composite dike within the Siljan ring structure,

central Sweden: Geoloiska Foreningens, Stockholm Forhandlinger, v.105, p. 75-77.

*Dachille, F., 1976, Frequency of the formation of large terrestrial impact craters Meteoritics, v.11, n.4, p.270-271.

*Bottomley, R.J., York, D., and Grieve, R.A.F., 1978, Ar-40/Ar-39 ages of Scandinavian impact structures-I, Mien and Siljan:

Contr. Mineral. Petrol., v.68, p. 79-84.

*Grieve, R.A.F., 1987, The formation of large impact structures and constraints on the Siljan structure (abstr,):

 in- International symposium on observation of the continental crust through drilling, 3rd: Stockholm, Vasttenfall (Swedish Power Board), p. 42

*Johansson, A., 1984, Geochemical studies on the Boda Pb-Zn deposit in the Siljan astrobleme, central Sweden:

Geol. Foren. i Stockholm Forh., v.106, p. 15-25.

*Juhlin, C. and Pedersen, L.B., 1988, Reflection seismic investigations of the Siljan impact structure:

 Jour. Geophys. Res., v.92, p. 14,113-14,122.

*Komer, S.C., Valley, J.W., Brown, P.E., and Collin, B., 1988, Fluid inclusions in granite from the Siljan ring impact structure and surrounding regions:

in- Deep drilling in crystalline bedrock, v.3, Berlin, Springer-Verlag (in press).

*Lindblom, S., and Wickman, F.E., 1985, Fluid inclusions from a quartz breccia in the Siljan ring structure, central Sweden:

Geol. Foren. i Stockholm Forh., v.107, p. 53-58.

*Swesson, N.B., 1971, Probable meteorite impact crater in central Sweden: Nature, v.299, p. 90-92.

*Svensson, N.B., 1973, Shatter cones from the Siljan structure, central Sweden: Geol. Foren. i Stockholm Forh., v.95, p. 139-143.

*Tamminem, J., and Wickman, F.E., 1980, Shock effects in pegmatite quartz from the Siljan ring structure, central Sweden:

Geol. Foren. i Stockholm Forh., v.102, p. 275-278.

*Valley, J.W. et al, 1988, Calite crack cements in granite from the Siljan ring, Sweden-stable isotopic results:

in- Deep drilling in crystalline bedrock, v.3: Berlin, Springer-Verlag (in press).

*Wickman, F.E., 1980, The impact center of the Siljan structure, central Sweden: Geol. Foren.i Stockholm Forh., v.102, p. 105-109.

 

Sweden-Tvaren Bay

*lat: 58 deg. 46 min. N, long: 17 deg. 25 min. E

*diameter: 2 km