[F] Dinosaur Park Formation see Judith River Wedge
Dinosaur Park Formation see Judith River Wedge
Dinosaur Park Formation see Judith River Wedge > Judith River Formation, Montana, US; Foremost Formation., Oldman Formation, Dinosaur Park Formation, Alberta, Saskatchewan, Canada
The Judith River Wedge is exposed discontinuously in river drainages from central Alberta and west-central Saskatchewan (south of 54o) trough north and south-central Montana. It interfingers with eastward-thickening marine shales of the Pakowki, Lea Park and [Claggett formations] Claggett Shale and Pierre Shale (below) and the Bearpaw Shale (above). In Canada the Judith River Wedge correlates westward with the Belly River Formation in the southern Foothills. North of approximately 54o latitude, the Judith River Wedge and Edmonton Group.
Clastic wedges become indistinguishable; there the combined Campanian-Maastrichtian wedge is referred to as the Waptiti Formation. In north-central Montana the Judith River Wedge correlates with some exeptions (according to Fiorillo, 1991 the Milk River near Havre, along Kennedy Coulee south of the international border, and in Wheatland County, Montana) with the Oldman Formation of southern Alberta.
The Judith River Wedge correlates wetsward in Montana with the Two Medicine Formation and farther south into Wyoming correlative nonmarine strata are included in the [Measaverde Formation]. The Judith River Wedge comproses a variety of sediment and facies types that reflect a variety of sources, areas, depositional settings and climatic influences along the Western Interior seaway during the Campanian. Whitnin the three formations of the Judith River Wedge in Canada, the Foremost Formation, Oldman Formation and the Dinosaur Park Formation, dinosaur fossils are most abundant in the last one.
The Judith River Formation in Montana has yielded hundreds of vertebrate \\\"microfossil\\\" localities that consist of the disarticulated and concentrated physiochemical remains of vertebrates. In Canada the resource industry refer to the entire wedge as [Belly River Group] Belly River Formation. Outcrop geologists and paleontologist prefer the terms Judith River Group, Judith River Formation and Oldman Formation for fossiliferous exposures in the southern Alberta plains.