BGS mineralogy and petrology collection record

Sample number E37712; E37712/A; COLLNOGT142;
Sample Donor Thurrell,R.G.
Rock name 'Original entry: Glouconite Rock Fragments In Solufluited Chalk'
Stratigraphy Not entered
Comments Depth 35' 6" - 37'
Locality details At place where M4 is proposed to cross the River Kennet at village of Theale at BH B/O -51
50k map sheet Reading (268)

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Map reference SU 6594 7088
Year collected Not entered 
Bore name London/S.Wales M4 Bo/51
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E37712

Cross Polarized, E37712

Plane Polarized, E37712

Plane Polarized, E37712


E37712/A

Cross Polarized, E37712/A

Plane Polarized, E37712/A

Plane Polarized, E37712/A