135E1171.txt

Feuille : 135E - VERVIERS - 428
N°SGB : 135E1171
Secteur :


X : 253399
Y : 145187

Commune : Rechain

Description lithologique :
Date : 2006

Nature : sondage
roche :
Formation :
localisation :


Références :




Description :

Adresse propriétaire : M. Archambaut, 087/31.03.33


S5, from top to bottom (fig. 2):
o 0-0.4 m: silt
o 0.4-2.7 m: silty clay (2) rapidly going into a yellow to brown clayey silt with rare Fe-Mn nodules
o 2.7-6.2 m: light yellow medium sand with white quartz pebbles (up to 4 cm in size); some thin
intercalations of brown clayey sand
o at 6.2 m: 2 to 5-cm-thick layer of pink clay
o 6.2-6.7 m: yellowish white gravelly sand with rounded quartz elements > 0.5 cm
o 6.7-7.3 m: white medium sand fining downwards and becoming ferruginized
o 7.3-7.5 m: very compact white-beige clay (11) with rounded, mostly deeply weathered quartz gravels
o 7.5-8 m: very clayey, gravelly ochreous sand
o 8-12.5 m: dark purple to black clay (14, 15, 16) pigmented by Mn-Fe oxides, with Mn-oxide concretions
(up to 3 cm in size) and a few small quartz pebbles. At the bottom, manganese-iron ore
pieces 5-10 cm in size and limestone blocks coloured by the Mn-oxides in contact with the
limestone bedrock.

N.B. : La fig. 2 n'a pas été communiquée.

Référence : publication à paraître :
Geologica Belgica:
'Cenomanian sands and clays north of the Vesdre valley: the oldest known Cretaceous deposits in eastern Belgium'
par: A. Demoulin, F. Quesnel, C. Dupuis, P. Gerrienne & J. Yans