The historic Yellowstone flood of early June 2022 dramatically changed the fluvial geomorphology in the northern part of Yellowstone National Park (YNP). According to the National Weather Service Billings, Montana, the Beartooth and Absaroka mountain ranges in this part of YNP had from 0.8 inches to over 5 inches of rainfall from June 10th through…
Tag: wyoming geology
Flagstaff Rim, Wyoming – A Classic Area of Continental Eocene Tuffs and Fossil Vertebrates
The Flagstaff Rim area in central Wyoming contains a classic geological section of Tertiary continental rocks that, for the most part, range in age from approximately 37 million years to about 35 million years. These strata are then capped by gravels that may be late Tertiary in age (probably younger than 20 million years in…
Tertiary Paleovalleys in the Laramie Mountains, Wyoming
The Laramie Mountains are part of the central Rocky Mountains in southeastern Wyoming. Archean and Proterozoic rocks form the bulk of the mountain range due to late Cretaceous–early Eocene (Laramide) basement-involved uplift. Hogbacks made of Paleozoic to Mesozoic age rocks flank much of the Precambrian cored mountain areas. But what sets the Laramie Mountains apart from the…
Glacial Geology Field Tripping in the Northern Yellowstone Area
Living near Yellowstone National Park has its advantages – and the best of these is being easily able to go on field trips to the Park area. A field trip opportunity came up last week when the Rocky Mountain section of the Geological Society of America came to Bozeman, Montana, for its annual meeting. One…