掳30'57.3"W). The crater had been recognized through the presence of shatter cones. Very beautiful shatter cones have been found in samples of Jurassic limestone. The mapping of 40 individual shatter cones revealed an area of at least 1 km2 covered by these features. The shatter cones are not in place because they are harvested in Jurassic limestone wrapped in quaternary deposits, predominantly at the flanks of the dry rivers, They Are not observed in the bedrock. While many shatter cones displayed curved and spoon-like surfaces, many are also conical with apices pointing in opposite directions. Complete Cones are present only in 10-15% of the samples studied. The discovery indicates the presence of unknown, deeply eroded impact structure or only they are ejected of nearby impact crater." /> 掳30'57.3"W). The crater had been recognized through the presence of shatter cones. Very beautiful shatter cones have been found in samples of Jurassic limestone. The mapping of 40 individual shatter cones revealed an area of at least 1 km2 covered by these features. The shatter cones are not in place because they are harvested in Jurassic limestone wrapped in quaternary deposits, predominantly at the flanks of the dry rivers, They Are not observed in the bedrock. While many shatter cones displayed curved and spoon-like surfaces, many are also conical with apices pointing in opposite directions. Complete Cones are present only in 10-15% of the samples studied. The discovery indicates the presence of unknown, deeply eroded impact structure or only they are ejected of nearby impact crater." /> 掳30'57.3"W). The crater had been recognized through the presence of shatter cones. Very beautiful shatter cones have been found in samples of Jurassic limestone. The mapping of 40 individual shatter cones revealed an area of at least 1 km2 covered by these features. The shatter cones are not in place because they are harvested in Jurassic limestone wrapped in quaternary deposits, predominantly at the flanks of the dry rivers, They Are not observed in the bedrock. While many shatter cones displayed curved and spoon-like surfaces, many are also conical with apices pointing in opposite directions. Complete Cones are present only in 10-15% of the samples studied. The discovery indicates the presence of unknown, deeply eroded impact structure or only they are ejected of nearby impact crater." /> 掳30'57.3"W). The crater had been recognized through the presence of shatter cones. Very beautiful shatter cones have been found in samples of Jurassic limestone. The mapping of 40 individual shatter cones revealed an area of at least 1 km2 covered by these features. The shatter cones are not in place because they are harvested in Jurassic limestone wrapped in quaternary deposits, predominantly at the flanks of the dry rivers, They Are not observed in the bedrock. While many shatter cones displayed curved and spoon-like surfaces, many are also conical with apices pointing in opposite directions. Complete Cones are present only in 10-15% of the samples studied. The discovery indicates the presence of unknown, deeply eroded impact structure or only they are ejected of nearby impact crater." />

51视频

Journals Information

Universal Journal of Geoscience(CEASE PUBLICATION) Vol. 1(3), pp. 125 - 129
DOI: 10.13189/ujg.2013.010302
Reprint (PDF) (1755Kb)


Moroccan Agoudal Impact Crater: Allochthonous or Autochthonous Shatter Cones Origin?


Abderrahmane Ibhi *, Hassane Nachit
Geoheritage and Geomaterials Laboratory, Faculty of Sciences, B.P. 8106, University of Ibn Zohr, Agadir, Morocco

ABSTRACT

A small eroded impact crater was recognized at about 20 km to the south of Isli impact carter (Central High Atlas, Morocco) at (31掳59'12.7"N; 5掳30'57.3"W). The crater had been recognized through the presence of shatter cones. Very beautiful shatter cones have been found in samples of Jurassic limestone. The mapping of 40 individual shatter cones revealed an area of at least 1 km2 covered by these features. The shatter cones are not in place because they are harvested in Jurassic limestone wrapped in quaternary deposits, predominantly at the flanks of the dry rivers, They Are not observed in the bedrock. While many shatter cones displayed curved and spoon-like surfaces, many are also conical with apices pointing in opposite directions. Complete Cones are present only in 10-15% of the samples studied. The discovery indicates the presence of unknown, deeply eroded impact structure or only they are ejected of nearby impact crater.

KEYWORDS
Meteorites, Impact crater, Shatter cones, Agoudal, Imilchil, Morocco

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Abderrahmane Ibhi , Hassane Nachit , "Moroccan Agoudal Impact Crater: Allochthonous or Autochthonous Shatter Cones Origin?," Universal Journal of Geoscience(CEASE PUBLICATION), Vol. 1, No. 3, pp. 125 - 129, 2013. DOI: 10.13189/ujg.2013.010302.

(b). APA Format:
Abderrahmane Ibhi , Hassane Nachit (2013). Moroccan Agoudal Impact Crater: Allochthonous or Autochthonous Shatter Cones Origin?. Universal Journal of Geoscience(CEASE PUBLICATION), 1(3), 125 - 129. DOI: 10.13189/ujg.2013.010302.