Pyroclastic deposits and fault contact, Spain

Description

**Location:** Morrón de Mateo quarry, Níjar, Almería, Spain **Longitude:** -2.074517 **Latitude:** 36.806579 A highly weathered pumice-rich ignimbrite layer (pumice lapillistone fall deposit) forms the base of the quarry. This is overlain by a thick sequence of pyroclastic surge deposits, which show both horizontal and cross-bedding. Cross-bedding at the base is representative of a high energy environment while the horizontal layers at the top are representative of a lower energy environment. A steeply-dipping fault seperates a dacitic dome from the pyroclastic sequence on the east side. The quarry is an active one, for the extraction of bentonite formed by weathering of the ignimbrite. *The model extends approx. 120m from east to west*