Revisions to the Wanakah Formation in and around Ouray County, Colorado
Abstract
A well-defined type section and consistent nomenclature are fundamental requirements for successful correlation of stratigraphic units and subsequent accurate paleogeographic reconstructions. The exact location of the original type section of the Middle Jurassic Wanakah Formation of the eastern Colorado Plateau was found in Ouray County, Colorado. Two nearby reference sections are described that supplement the lithologic descriptions in the original type section. These reference sections and the original type section constitute a “principal reference section” for the Wanakah Formation. Informal names “upper shale beds”, “marl member”, and “beds at Sawpit” have been used to describe the uppermost member of the Wanakah. These terms are replaced with the formal name, “Crooked Tree Member of the Wanakah Formation”, in the reference sections to avoid confusion, foster consistent usage, and facilitate litho-stratigraphic correlation.
Local Knowledge Graph (2 entities)
Related Works
Items connected by shared entities, co-authorship, citations, or semantic similarity.
Jurassic stratigraphy in Elk Mountains, west-central Colorado
Stratigraphic relationships of the Shafer limestone, San Juan County, Utah
Notes on the Laramie Formation in Central Weld County, Colorado
Late Paleozoic and Early Mesozoic Structural History of the Uncompahgre Front- 19600101
Colorado Geologic Highway Map
From Mesas and Mountains to Rocks and Rivers: A Quick Overview of the Geologic History of the Gunnison Basin
Fossil Ridge: Gunnison's Backyard Wilderness
Shale drilling field notes, lithologic descriptions, and core photographs of wells PLM5, PLM8, GUM1, and GLS1 at the East River Watershed, Colorado.
Digital subsurface data of Paleozoic rocks in the Upper Colorado River Basin in Wyoming, Utah, Colorado, Arizona, and New Mexico from USGS Regional Aquifer System Analysis
References (35)
35 references to works outside the Knowledge Hub