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VII.—On the Geology of the Neighbourhood of Lisbon.

1841; Geological Society of London; Volume: 6; Issue: 1 Linguagem: Inglês

10.1144/transgslb.6.1.107

2058-1041

Daniel Sharpe,

Archaeological and Geological Studies

1. Upper Tertiary Sand. 2. Almada Beds; consisting of.calcareoussands, sandy limestones, marls and clays.They may be best observed in the cliffs on the south bank of the Tagus, near the village of Almada.3. Lower Tertiary Conglomerate.These deposits occupy a basin, of which only a part is included in the region described in this paper.Their greatest extent is from the mouth of the Tagus to Abrantes, a distance of about eighty English miles ; and from Lisbon to Alcacer do Sal, about fifty miles.The Tagus runs through this basin from Abrantes to the sea, keeping close to its northern boundary, so that a very small portion of it lies north of the river.