... previous models for the lower Nanaimo Group, which suggest that deposition occurred in more sheltered strait or bay environments. Corresponding author (e-mail: [email protected] ). 1 This paper is one of a selection of papers published in this Special Issue on Signatures of Rocky Shorelines...

... of the Winnipegosis and Prairie formations of the Elk Point group and the Dawson Bay formation. The Upper Devonian series consists in ascending order of the Souris River formation, the Jefferson group made up of the Duperow and Birdbear formations, and the Three Forks formation, overlain by the Bakken formation...

... Rocky Mountains. Regional evidence suggests that the Beartooth Butte formation of Early Devonian age was laid down along the eastern margin of a sea and on the landmass that bordered it in southern and central Montana and northern Wyoming. The Williston basin area in North Dakota was apparently a part...

...Colin W. Stearn; Dasharathlal H. Shah Abstract Samples from the Duperow, Souris River, and Dawson Bay formations collected from a mine shaft near Esterhazy, Saskatchewan, contain the stromatoporoids that are described in this paper. The lower beds of the Duperow Formation, corresponding to members...

... Mountain (rift-related submarine pillow basalt, chert, and diorite) and Quesnel (island-arc sediments and subaqueous volcanics) terranes. Each is separated from others by thrust faults. Grit, phyllite, limestone, and volcanics of the Barkerville terrane may be correlative with the Eagle Bay Formation near...

... Group (Shallow Bay Formation, Factory Cove Member, Beds 9, 10, and part of Bed 11). The upper part of the section consists of interbedded dolostone and shale and is unlike any other sequence in the Cow Head Group. This upper sedimentary sequence is defined as the Lobster Cove Head Member of the Shallow...

... Upper Devonian lowstand and transgressive systems tracts. The overlying Upper Devonian Elbert Formation (upper member) consists of geographically extensive tidal-flat deposits and is interpreted as mixed siliciclastic-carbonate bay-fill facies that represents an early highstand systems tract...

...-central North Dakota. The Middle Devonian series is divided into the Winnipegosis and Prairie formations of the Elk Point group and the overlying Dawson Bay formation. Upper Devonian rocks underlie most of the area studied and make up most of the outcrops. They attain a maximum thickness of about...

... on the Port au Port Peninsula, western Newfoundland. Laminated limestones (Ship Cove Formation) and overlying evaporites (Codroy Road Formation) are similar to the sequence in the Bay St. George Subbasin, southwestern Newfoundland. In the Port au Port region, this sequence is laterally equivalent to biohermal...

..., and marine bays. In this report the formation is divided into three intertonguing members. The lower part of the Tyler is assigned to the Stonehouse Canyon Member, which consists of mostly gray mudstone and sandstone. This member grades upward and tongues laterally into the Cameron Creek Member, which...

... raininess periods. In a coastal rocky landscape dominated by headlands and bays, the sandy deposits at the river outlets form pocket beaches enclosed between the flanks of the rias . During most of the year these rivers are confined in the backshore zone where swamps are formed, and only in occasion...

... to the San Marcos Formation. Stabilized through extensive cementation by coralline red algae, the rim of the boulder bed forms a steep rocky shoreline reposed between 50 degrees and 70 degrees . Biological zonation is expressed both laterally and vertically by the remains of more than 30 species of marine...

... suggested by patterns of competitive overgrowth in certain species. Definite proof of encrustation by favositid corals is exhibited in an extraordinary example of an ancient rocky shore exposed for 350 m on Hudson Bay near Churchill, Manitoba. Carbonate strata attributed to the Upper Ordovician Port Nelson...

... indicate that permafrost, which may have a thickness of 30 m, is present within basalts and quartzites of the cuestas at elevations above 20 m. The thermal effect of the sea and the possible infiltration of sea water in the structural elements prevent the formation of permafrost at lower altitudes. Rocky...

..., bien que le pluton de Rocky Bay, près de la limite entre les deux, montre quelques caractères de transition. On considère cette correspondance étroite entre les plutons granitoïdes et les roches de la croûte dans différents contextes tectoniques comme une indication que leur formation provient de la...