081E0170

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ADMINISTRATIVE & TECHNICAL DATA
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Borehole drilled in framework of RESPONSE project for installation of groundwater monitoring well (2 m filter).

GSB ID: 081E0170
RESPONSE ID: ZIL-05
Location: Adjacent to Woods Cemetery, Verbrandemolenstraat, Zillebeke (Ieper)
Date: 05.09.2018
X: 47635.395
Y: 169060.015
Z: +39.528 m
Total depth: 3.00 m
Groundwater level: c. 1.50 m
Describer: Jan Walstra, Geological Survey of Belgium

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LITHOLOGICAL DESCRIPTION
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0.00 – 0.10 m
Light greyish-brown, humic, loamy very fine sand

0.10 – 0.80 m
Light greyish-brown, humic, loamy fine sand; Fe and Mn-oxidation spots, some brick fragments and peaty lumps (or burned organic material?)

0.80 – 1.00 m
Light greyish-brown loamy fine sand with grey lumps of clay

1.00 – 1.20 m
Light beige-grey loamy fine sand; Fe-oxidation spots

1.20 – 1.50 m
Light beige-grey, slightly loamy, fine sand (loamy intercalations); Fe-oxidation spots

1.50 – 1.60 m
Idem; less Fe-oxidation spots

1.60 – 2.55 m
Light beige-grey homogeneous fine sand; a silex fragment around 2.40 m

2.55 – 2.60 m
Rounded gravel and wood debris

2.60 – 2.70 m
Greenish-grey sandy clay

2.70 – 3.00 m
Light greenish-brown clayey very fine sand (sticky).

All depths: non-calcareous

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STRATIGRAPHICAL INTERPRETATION
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0.00 – 1.00 m: reworked
1.00 – 2.55 m: Quaternary eolian cover sands
2.55 – 2.60 m: Quaternary base gravel
2.60 – 3.00 m: Tielt Formation

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GROUNDWATER LEVEL
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Measurements sounding device, below ground surface
5.9.2018: -1.50 m
19.12.2018: -1.97 m