Entries by Lance Weaver

Grand Canyon’s Redwall Limestone (Geology of The Grand Staircase)

Exposure: Prominent throughout the Grand Canyon (e.g., South Kaibab Trail); also visible in the Virgin River Gorge, Pavant Range, and San Rafael Swell. Age:  Mississippian, 359-330 million years ago. Depositional Environment: High-energy shallow marine shelf. Specifically, a carbonate platform featuring oolitic shoals, crinoid thickets, and lime-mud flats distal from continental sediment sources. Paleogeography: Located on the […]

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

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)

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)

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)

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)

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 […]