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Analyzes the limestones at the Middle Pleistocene Belmont Formation of Bermuda, which consists in part of beach-dune biocalcarenites which underwent intense contemporaneous cementation and diagenesis. Impact of fibrous isophacous cement on the beach deposits; How the previously deposited eolianites further inland were stabilized; Indication that phreatic meteoric diagenesis is more effective in cementing and altering the biocalcarenites.

Reports that a study of core from the Arab/Darb Formation of the Umm Shaif Field, Abu Dhabi Marine Areas, has revealed a sequence of sediments which can be related to nine distinct cycles of sabhka formation. Basal algal grainstone/boundstone; Dolomitation and formation of nodular anhydrite; Early stage products of diagenesis; Presence of poikilotopic anhydrite in lagoonal dolomites.

Ripple, flaser and lenticular bedding are well known, but for describing profiles, they are not sufficiently defined and subdivided. It is, therefore, the intent of the following text to present such a defination and classification. The classification contains the following main bedding types and intermediary types (Fig.1). [ABSTRACT FROM AUTHOR]

The Cape fear Formation rests on basement rocks in the Cape Fear River valley of the North Carolina Coastal Plain. It consists primarily of graded muddy sand-sandy mud couplets. A typical sequence each couple starts with a disconformity, followed by a basal gravelly sand megaclats of quartz and clay pebbles, cross-bedded sand, and finally a structureless mud bed. Fossils are absent. The sand fraction is sorted and the sediment has a clayey texture. Stucture and textures suggest that each couple is the product of a current warning from an upper flow regime, to the lower part of a lower flow regime. Turbidity current and fluvial origins are considered. Cross-bedding and texture criteria indicate that normal, low-density currents are responsible for at least part of the typical sequence. A normal fluvial origin is rendered less likely by the absence of mud cracking. Root casts, and textural criteria of a partitioned subaeria environment. Stratigraphic and geochemical considerations suggest that the formation may have been deposited in estuaries or coastal lagoons; if so, the stratification may record sedimentation during the periodic flushing of saline water by river floods. [ABSTRACT FROM AUTHOR]

Indicates that the type Lindsey Bridge Member of the Moorefield Formation of northeastern Oklahoma consists of massively cross-bedded limestone. Use of an hydrodynamic model developed in flume studies; Presence of three facies; Foresets; Toesets; Bottomsets; Occurrence of flow separation as currents crossed a pre-Moorefield topographic high and entered a basin on the downcurrent side.

Studies the regional and local variation in the mineralogy of the sandstones of the Eocene Tyee Formation, Oregon Coast Range. Differences in depositional conditions of sand grains; Assertion on the indecisiveness of the petrographic evidence for the origin of sandstone matrix; Three main lines of evidence supporting the notion that thin sections that the rock fragments in the low-matrix sample have altered mineralogically following burial.