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Book Chapter

Neoproterozoic strata of southeastern Idaho and Utah: record of Cryogenian rifting and glaciation

Author(s)

Paul Karl Link, Nicholas Christie-Blick

Book: The Geological Record of Neoproterozoic Glaciations

Series: Geological Society, London, Memoirs

Publisher: Geological Society of London

Published: 01 January 2011

DOI: 10.1144/M36.38

EISBN: 9781862394117

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Abstract

Add to Citation Manager for Neoproterozoic strata of southeastern Idaho and Utah: record of Cryogenian rifting and glaciation

Abstract Neoproterozoic strata in southeastern Idaho and Utah include the <766 Ma Uinta Mountain Group and Big Cottonwood Formation (Fm.) deposited in an east-trending rift basin and, to the west, the lower part of a westward-thickening rift to passive-margin succession that initiated c. 720 Ma. The latter contains a lower diamictite and volcanic succession, with a complex stratigraphic interval of Cryogenian marine glacial deposits (Pocatello and Mineral Fork formations and correlatives). This is overlain by a mostly terrigenous succession of <667 Ma strata assigned to the upper member of the Pocatello Fm. and Brigham Group in southeastern Idaho, to the Kelley Canyon Fm. and Brigham Group in northern and western Utah, and to the McCoy Creek Group and Prospect Mountain Quartzite in adjacent Nevada. Although the Brigham Group and correlative deposits contain no direct evidence for glaciation, widely developed, though stratigraphically restricted, incised valleys, with erosional relief from a few metres to as much as 160 m, are inferred to represent subsequent times of Cryogenian glacially lowered sea level. Overall interpretations of the stratigraphy and sedimentology of these rocks have changed little in the past 10–15 years. The most important recent advances relate to U–Pb geochronology. In strata that lie unconformably below demonstrable glacial deposits, the lower Uinta Mountain Group (formerly thought to be c. 900 Ma) contains populations of detrital zircons as young as 766±5 Ma. Cryogenian magmatism north of the Snake River Plain in central Idaho is recognized near House Mountain, east of Boise at c. 725±5 Ma, in the Pioneer Mountains Core Complex at about 695 Ma, and in central and east-central Idaho at 685–650 Ma. Clasts interpreted to be from the rift-related Bannock Volcanic Member of the Pocatello Fm. are dated at 717±4 Ma and 701±4 Ma. The overlying diamictite-bearing Scout Mountain Member contains a mafic lapilli tuff near the base (686±4 Ma) and a reworked fallout tuff near the top (667±5 Ma). Strongly negative C-isotope data have been obtained from some of the carbonate rocks, although the latter constitute only a small fraction of the succession. Palaeomagnetic data are available only for the Uinta Mountain Group, and suggest an equatorial palaeolatitude.

Journal Article

Miocene to Holocene landscape evolution of the western Snake River Plain region, Idaho: Using the SHRIMP detrital zircon provenance record to track eastward migration of the Yellowstone hotspot

Luke P. Beranek, Paul Karl Link, C. Mark Fanning

Journal: GSA Bulletin

Publisher: Geological Society of America

Published: 01 September 2006

GSA Bulletin (2006) 118 (9-10): 1027–1050.

DOI: https://doi.org/10.1130/B25896.1

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Add to Citation Manager for Miocene to Holocene landscape evolution of the western Snake River Plain region, Idaho: Using the SHRIMP detrital zircon provenance record to track eastward migration of the Yellowstone hotspot

Book Chapter

Pocatello Formation and overlying strata, southeastern Idaho:: Snowball Earth diamictites, cap carbonates, and Neoproterozoic isotopic profiles

Author(s)

Paul Karl Link, Frank A. Corsetti, Nathaniel J. Lorentz

Book: Interior Western United States

Series: GSA Field Guide

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Neoproterozoic strata of southeastern Idaho and Utah: record of Cryogenian rifting and glaciation Available to Purchase

Miocene to Holocene landscape evolution of the western Snake River Plain region, Idaho: Using the SHRIMP detrital zircon provenance record to track eastward migration of the Yellowstone hotspot Available to Purchase

Pocatello Formation and overlying strata, southeastern Idaho:: Snowball Earth diamictites, cap carbonates, and Neoproterozoic isotopic profiles Available to Purchase

U-Pb SHRIMP ages of Neoproterozoic (Sturtian) glaciogenic Pocatello Formation, southeastern Idaho Available to Purchase

An Upwelling Model for the Phosphoria Sea: A Permian, Ocean-Margin Sea in the Northwest United States Available to Purchase

Foreword Available to Purchase

Introduction to the hydrogeology of the eastern Snake River Plain Available to Purchase

Pliocene and Quaternary stratigraphic architecture and drainage systems of the Big Lost Trough, northeastern Snake River Plain, Idaho Available to Purchase

Paleoenvironments of sedimentary interbeds in the Pliocene and Quaternary Big Lost Trough, eastern Snake River Plain, Idaho Available to Purchase

Subsurface volcanology at Test Area North and controls on groundwater flow Available to Purchase

Sedimentologic and hydrologic characterization of surficial sedimentary facies in the Big Lost Trough, Idaho National Engineering and Environmental Laboratory, eastern Idaho Available to Purchase

Late Quaternary highlands in the Mud Lake and Big Lost Trough subbasins of Lake Terreton, Idaho Available to Purchase

Holocene paleoflood hydrology of the Big Lost River, western Idaho National Engineering and Environmental Laboratory, Idaho Available to Purchase

Tension cracks, eruptive fissures, dikes, and faults related to late Pleistocene-Holocene basaltic volcanism and implications for the distribution of hydraulic conductivity in the eastern Snake River Plain, Idaho Available to Purchase

Morphology of inflated pahoehoe lavas and spatial architecture of their porous and permeable zones, eastern Snake River Plain, Idaho Available to Purchase

Geochemical correlations and implications for the magmatic evolution of basalt flow groups at the Idaho National Engineering and Environmental Laboratory Available to Purchase

Accumulation and subsidence of the Pleistocene basaltic lava flows of the eastern Snake River Plain, Idaho Available to Purchase

Open-system evolution of a single episode of Snake River Plain magmatism Available to Purchase

Chemical characteristics of thermal water beneath the eastern Snake River Plain Available to Purchase

Genesis of alteration of Quaternary basalts within a portion of the eastern Snake River Plain Aquifer Available to Purchase

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Neoproterozoic strata of southeastern Idaho and Utah: record of Cryogenian rifting and glaciation

Miocene to Holocene landscape evolution of the western Snake River Plain region, Idaho: Using the SHRIMP detrital zircon provenance record to track eastward migration of the Yellowstone hotspot

Pocatello Formation and overlying strata, southeastern Idaho:: Snowball Earth diamictites, cap carbonates, and Neoproterozoic isotopic profiles

U-Pb SHRIMP ages of Neoproterozoic (Sturtian) glaciogenic Pocatello Formation, southeastern Idaho

An Upwelling Model for the Phosphoria Sea: A Permian, Ocean-Margin Sea in the Northwest United States

Foreword

Introduction to the hydrogeology of the eastern Snake River Plain

Pliocene and Quaternary stratigraphic architecture and drainage systems of the Big Lost Trough, northeastern Snake River Plain, Idaho

Paleoenvironments of sedimentary interbeds in the Pliocene and Quaternary Big Lost Trough, eastern Snake River Plain, Idaho

Subsurface volcanology at Test Area North and controls on groundwater flow

Sedimentologic and hydrologic characterization of surficial sedimentary facies in the Big Lost Trough, Idaho National Engineering and Environmental Laboratory, eastern Idaho

Late Quaternary highlands in the Mud Lake and Big Lost Trough subbasins of Lake Terreton, Idaho

Holocene paleoflood hydrology of the Big Lost River, western Idaho National Engineering and Environmental Laboratory, Idaho

Tension cracks, eruptive fissures, dikes, and faults related to late Pleistocene-Holocene basaltic volcanism and implications for the distribution of hydraulic conductivity in the eastern Snake River Plain, Idaho

Morphology of inflated pahoehoe lavas and spatial architecture of their porous and permeable zones, eastern Snake River Plain, Idaho

Geochemical correlations and implications for the magmatic evolution of basalt flow groups at the Idaho National Engineering and Environmental Laboratory

Accumulation and subsidence of the Pleistocene basaltic lava flows of the eastern Snake River Plain, Idaho

Open-system evolution of a single episode of Snake River Plain magmatism

Chemical characteristics of thermal water beneath the eastern Snake River Plain

Genesis of alteration of Quaternary basalts within a portion of the eastern Snake River Plain Aquifer