Abstract The Sunniland Limestone represents a shoaling–upward depositional cycle formed during early Albian time. It extends throughout southern Florida as a 30–to 80–m–thick (100–260 ft) unit that is landward of the South Florida Basin and pinches out updip (Fig. 16; Applin and Applin, 1965; Winston, 1971). The type section is the Humble Gulf Coast Realties Corporation No. 2 well in Collier County, Florida (Applin, 1960; Applin and Applin, 1965). The Sunniland is correlated with the Mooringsport Member of the upper part of the Glen Rose Formation (Feitz, 1976; Applegate and others, 1981). It is an important hydrocarbon reservoir (Fig. 17; Banks, 1960; Applin and Applin, 1965; Feitz, 1976). The Sunniland Limestone is the basal unit of the Ocean Reef Group (Fig. 18; Winston, 1971), which is a cyclical unit of limestone, dolomite, and anhydrite as much as 330 m (1,000 ft) thick. The Lake Trafford Formation of dolomite and anhydrite overlies the Sunniland. Below the Ocean Reef Group is the Glades Group (Winston, 1971), which is an interval of limestone, dolomite, and anhydrite as much as 245 m (800 ft) thick. This unit was redefined and restricted to extend from the top of Punta Gorda Anhydrite down to the top of the Pumpkin Bay Formation (Applegate and others, 1981). The Pumpkin Bay is partly equivalent with the Fort Pierce Formation of Applin and Applin (1965, p. 18). The basal unit of the redefined Glades is the West Felda Member of the Lehigh Acres Formation This shaly unit represents the Late Aptian

Abstract The artificial Corinth Canal connects the Aegean Sea with the Corinth Gulf, and displays high steep walls that enable the study of the sedimentological structure of this area. A former strait naturally connecting the gulf with the Aegean Sea is assumed to have existed in this area. Therefore, this exceptionally well-exposed site could be used as an analogue to study tidal straits after its stratigraphic architecture, sedimentology and structure have been defined. To do so, we used field observations associated with a 3D model built using drone imaging. We document a strait divided into a central zone and two adjacent dune-bedded strait zones. The centre is an active horst where sediment bypass occurred. On both sides of this, opposite-dipping conglomeratic dunes are represented by simple- and compound-dune foreset architectures with multiscale asymmetrical herringbone cross-stratifications. These observations document a tidal strait with conglomeratic dune-bedded strait zones in a micro-tidal context. These c. 300 ka strait deposits are the only ones preserved in the canal area. After deposition ended, this connection disappeared due to regional uplift and the offset of the Kalamaki–Isthmia Fault. This palaeostrait helps to improve our understanding of Middle–Late Pleistocene palaeogeography and the structural controls on sea connections.