Proceedings of the Geologists' Association, Band 96

acritarchs angle anomaly associated Atherfield Clay B.Sc basin Bed B1 borehole Boscastle Bosumtwi Bouguer anomaly British calcite carbonate Carboniferous Chalk channel Chert cleavage coast Coney Road Cornwall Crackington Formation crater Cretaceous crystals deformation deposits Devonian Earnley East Wittering England Eocene evidence exposures faults fauna fold fossil fragments Frasnian Geol GEOLOGISTS Geology glaucony Gramscatho granite gravels gravity Greensand horizons ice-wedge casts ikaite indicate inner and outer interpretation joints Jurassic lake layering limestones Linnaeus Lond London Lower Maesmawr magnetic marine Meneage Formation meteorite mineral monocline Nappe occur Ordovician otoliths outcrop outer faces permafrost Pleistocene pollen Portland East Beach Portland West present Proc pseudomorphs quartzites Right sacculith rocks samples sands sandstones sedimentary sediments Selsey sequence shales shear silty slope southern species specimens stratigraphical structures suggested surface Surv Sussex tectonic tektites thick thrust Upper veins volcanic Warboys zone