The Hell Creek Formation is an intensively studied geological formation of mostly Upper Cretaceous and some Early Paleocene rocks in North America, named for exposures studied along Hell Creek, near Jordan, Montana. The formation stretches over portions of Montana, North Dakota, South Dakota, and Wyoming.

On the Hell Creek Arm of Fort Peck Lake, this park provides facilities for most water sports, as well as, excellent walleye fishing. Hell Creek also serves as a launching point for boat camping in the wild and scenic Missouri Breaks.

It is perhaps best known for the highly fossiliferous Hell Creek Formation exposed primarily on state and federal lands and composed of freshwater clays, mudstones and sandstones deposited during the last part of the Cretaceous, the Maastrichtian period.

The somewhat scary-sounding Hell Creek region of Montana is often associated with the archaeological and geological history of the state. And the area does indeed have a rich history of unearthing various dinosaur and plant remains, as well …

As the Rockies slowly rose to the west, the Hell Creek and Lance Formation expanded eastward, filling in the great basin that was the Western Interior Seaway. Along this irregular, swampy coastline, dinosaurs flourished.

Hell Creek Formation, division of rocks in North America dating to the end of the Cretaceous Period some 65.5 million years ago. Named for exposures studied on Hell Creek, near Jordan, Montana, it occurs in eastern Montana and portions of …

About 65 million years ago, the inland sea receded as the Rocky Mountains rose, pushing the shoreline further east. Great rivers meandered through the coastal plain in a warm and humid climate, depositing sediment which would later become known as the Hell Creek Formation.

Hell Creek Recreation Area is a public recreation area managed by the Little Shell Tribe of Chippewa Indians of Montana occupying 337 acres (136 ha) on the south side of Fort Peck Lake twenty miles (32 km) due north of the community of Jordan, Montana. [4]

Jul 18, 2021 · The Hell Creek Formation is an intensively studied division of mostly Upper Cretaceous and some lower Paleocene rocks in North America, named for exposures studied along Hell Creek, near Jordan, Montana.

The Hell Creek Formation is a series of rocks where fossil dinosaurs are found. The strata are mostly Upper Cretaceous and some lower Paleocene rocks in North America. The name comes from Hell Creek, near Jordan, Montana. The formation includes portions of Montana, North Dakota, South Dakota, and Wyoming.