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U3A Visit to Rocket Quarry, Portesham Aims: 1. To look at the geological succession in the quarry

U3A Visit to Rocket Quarry, Portesham Aims: 1. To look at the geological succession in the quarry 2. To look at a DIGS site and appreciate the need for GeoConservation 3. To examine how the geology of the Weymouth Anticline affects the landscape. 7. 6. 5. 4. 3. 2. 1.

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U3A Visit to Rocket Quarry, Portesham Aims: 1. To look at the geological succession in the quarry

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  1. U3A Visit to Rocket Quarry, Portesham Aims: 1. To look at the geological succession in the quarry 2. To look at a DIGS site and appreciate the need for GeoConservation 3. To examine how the geology of the Weymouth Anticline affects the landscape.

  2. 7 6 5 4 3 2 1 The lithology at Portesham Surface soil and turf Position of Great Dirt Bed Massive ‘algal’ limestone with evaporites replaced by calcite and chert Thin limestones with ostracods Hard Cap – ‘algal’ limestone with fossilised remains of tree branches Lower Dirt Bed Skull Cap - laminated limestone with foraminifera, ostracods and gastropods Basal Dirt Bed Laminated limestone with ostracods Portland Group - limestone containing bivalves Correlating the lithographic section with the rock face

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