Entries by Lance Weaver

The Weaver Precessional Polar Oscillation Cycle & Core-Mantle Injection Theory

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Earth’s cycle for geomagnetic excursion, reversal and punctuated geologic upheaval. The Problems   -no ice in Alaska/Siberia-Africa spreading ridges-mountains sinusoidal-Dansgaard–Oeschger event events-ancient archaeology site alignments-sediment accumulation problem FROM BIG TO SMALL1-Galactic core creates double interference pattern (pushes matter from high energy to quiet/low energy), which propagates in fractal pattern down to the smallest set which we traverse […]

Supai & Hermosa Group / Weber Sandstone (Geology of The Grand Staircase)

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Exposure: The Supai Group is seen throughout the Grand Canyon. Moving northward it transitions into the Hermosa Group and can be Seen in the Goosenecks area and especially in Canyonlands. Farther north, the time equivalent Weber Sandstone of the Vernal area is particularly notable. Age:  Early Permian, 315-285 million years ago. Depositional Environment: deposited in a […]

Esplanade Sandstone & Cutler Cedar Mesa Sandstone (Geology of The Grand Canyon)

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Exposure: The Esplanade Sandstone is the upper member of the Supai Group and forms a prominent bench visible throughout the Grand Canyon. It is time equivalent to the upper Culter Group units, the Cedar Mesa & Elephant Canyon Formations. Age:  Early Permian, 290–294 million years ago. Depositional Environment: deposited in a nearshore eolian, or wind-blown, environment. […]

Hermit/Organ Rock (Geology of The Grand Canyon)

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Exposure: The Toroweap & White Rim Sandtones are best seen in Southern Utah and Northern Arizona. Age:  Early Permian, 280 million years ago. Depositional Environment: Coastal dune field (eolian with some marine transgressions). Marine transgressions, terrestrial wind-blown sand, coastal environments laid down the Kaibab, Toroweap, and Coconino formations. At different time, the marine waters came from […]

Toroweap/Coconino/White Rim Sandstone (Geology of The Grand Canyon)

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Exposure: The Toroweap & White Rim Sandtones are best seen in Southern Utah and Northern Arizona. Age:  Early Permian, 280 million years ago. Depositional Environment: Coastal dune field (eolian with some marine transgressions). Marine transgressions, terrestrial wind-blown sand, coastal environments laid down the Kaibab, Toroweap, and Coconino formations. At different time, the marine waters came from […]

Kaibab Limestone (Geology of The Grand Staircase)

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Exposure: The Kaibab Limestone forms the caprock of most of the Grand Canyon. Great exposures exist west of Zion National Park. Age:  Early Permian, 250 million years ago. Depositional Environment: Shallow Marine Shelf Deposit. Paleogeography: Sediment deposition was influenced by the Uncompahgre Uplift (ancestral Rocky Mountains), but by the end of the Permian, the Uncompahgre mountains […]

Moenkopi Formation (Geology of Utah’s Grand Staircase)

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Exposure: The Moenkopi formation can be found throughout the Colorado Plateau. But its thickest extent stretches from southwest Utah to Northern Arizona. Age:  Lower Triassic to possibly lower Middle Triassic Depositional Environment: Tidal sabkha (also with nearshore shales, shallow marine limestones, and some floodplain) Paleogeography: The Moenkopi Formation was deposited along the western portion of the […]

Chinle Formation (Geology of Utah’s Grand Staircase)

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Exposure: The Chinle formation can be found throughout the Colorado Plateau. From the Flanks of the Uintas to Petrified Forest National Park in Arizona. Age:  Late Triassic. Depositional Environment: Non-marine fluvial channels, floodplains, paleosols, marshes, and small lakes. Paleogeography: The Chinle Formation was deposited during the Late Triassic when the supercontinent Pangea had landmass on both […]