David H. Malone
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View article: Baraboo Interval Quartzites in Iowa: Assessing the Provenance of the Washington County Quartzite
Baraboo Interval Quartzites in Iowa: Assessing the Provenance of the Washington County Quartzite Open
The Washington County Quartzite (WCQ) in southeastern Iowa is the southernmost occurrence of the Geon 17 “Baraboo Interval” quartzites in the Laurentian midcontinent region. Three drill holes encountered poorly sorted quartzite and phyllit…
View article: Lawn Deer
Lawn Deer Open
A poem titled Lawn Deer.
View article: Dawn over a Small Town
Dawn over a Small Town Open
A poem titled Dawn over a Small Town.
View article: The Growth and Collapse of a Volcanic Field: Detrital Zircon U/Pb Geochronology and Provenance of the Oligocene Bear Valley Formation, Southwest Utah, USA
The Growth and Collapse of a Volcanic Field: Detrital Zircon U/Pb Geochronology and Provenance of the Oligocene Bear Valley Formation, Southwest Utah, USA Open
The Bear Valley Formation (Fm.) is a distinctive eolian sandstone interbedded with thick volcanic rocks of the Marysvale volcanic field of southwest Utah, the southern part of which failed during eruptive activity along three mega-scale gr…
View article: Deformation of the “Anorogenic” Wolf River Batholith, Wisconsin, USA: Understanding the Baraboo Orogeny Hinterland
Deformation of the “Anorogenic” Wolf River Batholith, Wisconsin, USA: Understanding the Baraboo Orogeny Hinterland Open
The Mesoproterozoic (~1470 Ma) Wolf River batholith (WRB) is exposed over 6500 km2, encompassing 11 plutons that crosscut the Archean Marshfield and Proterozoic Penokean terranes. As the WRB is the classically defined anorogenic batholith,…
View article: Zircon geochronology records frictional weakening and restrengthening during emplacement of the Sevier gravity slide, southwest Utah (USA)
Zircon geochronology records frictional weakening and restrengthening during emplacement of the Sevier gravity slide, southwest Utah (USA) Open
The exceptional transport distance of long-runout landslides requires a mechanism for reduced frictional resistance to sliding. Here, we use zircons in the frictional wear products generated during emplacement of the Sevier gravity slide (…
View article: Emplacement age of the Sevier gravity slide, Utah, USA
Emplacement age of the Sevier gravity slide, Utah, USA Open
The Marysvale volcanic field in southwestern Utah hosts three large-volume gravity slides: the Sevier (SGS), the Markagunt (MGS), and the Black Mountains (BGS). The gravity slides are composed of lahar deposits, lava flows, and ash-flow tu…
View article: Emplacement Age of the Sevier Gravity Slide, Utah, USA
Emplacement Age of the Sevier Gravity Slide, Utah, USA Open
The Marysvale volcanic field in southwestern Utah hosts three large volume gravity slides: the Sevier (SGS), the Markagunt (MGS), and the Black Mountains (BGS). The gravity slides are composed of lahar deposits, lava flows, and ash-flow tu…
View article: Petrologic relationship between lamprophyres, carbonatites, and heavy rare‐earth element enriched breccias at Hicks Dome
Petrologic relationship between lamprophyres, carbonatites, and heavy rare‐earth element enriched breccias at Hicks Dome Open
New petrological, geochemical, and P – T modelling results from igneous samples clarify how carbonatite‐lamprophyre magmatism, fluorite and rare earth element (REE) enrichment are petrogenetically related in southern Illinois. P – T modell…
View article: Unmixing detrital zircon U-Pb ages reveals tectonic and climatic depositional influences on the Carboniferous Ansilta Formation, Calingasta-Uspallata Basin, Western Argentina
Unmixing detrital zircon U-Pb ages reveals tectonic and climatic depositional influences on the Carboniferous Ansilta Formation, Calingasta-Uspallata Basin, Western Argentina Open
The Late Paleozoic Ice Age (LPIA) was a principal control of sedimentation across Gondwana from the late Devonian through early Permian. We assess the hypothesis that glacial to interglacial transitions in western Argentina were the primar…
View article: Structural Relationships Across the Sevier Gravity Slide of Southwest Utah and Implications for Catastrophic Translation and Emplacement Processes of Long Runout Landslides
Structural Relationships Across the Sevier Gravity Slide of Southwest Utah and Implications for Catastrophic Translation and Emplacement Processes of Long Runout Landslides Open
The physical processes that facilitate long‐distance translation of large‐volume gravity slides remain poorly understood. To better understand these processes and the controls on runout distance, we conducted an outcrop and microstructural…
View article: Comparative analysis of the Potter Tower and a new Track Sprayer for the application of residual sprays in the laboratory
Comparative analysis of the Potter Tower and a new Track Sprayer for the application of residual sprays in the laboratory Open
Efforts to evaluate the residual efficacy of new IRS formulations have identified limitations with the industry standard laboratory sprayer, the Potter Spray Tower (PT). Calibrating the PT can be time-consuming, and the dosing of surfaces …
View article: Linking the Pinware, Baraboo, and Picuris orogens: Recognition of a trans-Laurentian ca. 1520–1340 Ma orogenic belt
Linking the Pinware, Baraboo, and Picuris orogens: Recognition of a trans-Laurentian ca. 1520–1340 Ma orogenic belt Open
It is proposed that the Pinware orogen of eastern Canada, the Baraboo orogen of the midcontinent, and the Picuris orogen of the southwestern United States delineate a previously unrecognized, ~5000-km-long, ca. 1520–1340 Ma trans-Laurentia…
View article: Geochronology of Cambrian Sedimentary and Volcanic Rocks in the Illinois Basin: Defining the Illinois Aulacogen
Geochronology of Cambrian Sedimentary and Volcanic Rocks in the Illinois Basin: Defining the Illinois Aulacogen Open
The Wabash #1 well, drilled for the Wabash CarbonSAFE Project and located in Vigo County, Indiana, USA, was drilled in early 2020 as a stratigraphic test well to characterize and evaluate the basal Cambrian Mt. Simon Sandstone for carbon d…
View article: The concept of tectonic provenance: Case study of the gigantic Markagunt gravity slide basal layer
The concept of tectonic provenance: Case study of the gigantic Markagunt gravity slide basal layer Open
Formation and evolution of the basal layer in large landslides has important implications for processes that reduce frictional resistance to sliding. In this report, we show that zircon geochronology and tectonic provenance can be used to …
View article: The Geology of The Mt. Simon Sandstone Storage Complex at the Wabash #1 Well, Vigo Co., Indiana (Subtask 7.2, Technical Report)
The Geology of The Mt. Simon Sandstone Storage Complex at the Wabash #1 Well, Vigo Co., Indiana (Subtask 7.2, Technical Report) Open
The Wabash CarbonSAFE project drilled the Wabash #1 stratigraphic test well (ID# 168045) at the Wabash Valley Resources (WVR) IGCC facility in Vigo County, Indiana, to characterize and evaluate the basal Cambrian Mt. Simon Sandstone for co…
View article: Supplemental Material: Timing and structural evolution of the Sevier thrust belt, western Wyoming
Supplemental Material: Timing and structural evolution of the Sevier thrust belt, western Wyoming Open
Detrital zircon age data
View article: Supplemental Material: Timing and structural evolution of the Sevier thrust belt, western Wyoming
Supplemental Material: Timing and structural evolution of the Sevier thrust belt, western Wyoming Open
Detrital zircon age data
View article: Supplemental Material: Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide
Supplemental Material: Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide Open
File S1: AMS data. File S2: Dike paleopole data. File S3: O and C isotope data. File S4: Fluid-inclusion data. File S5: U-Pb ages
View article: Supplemental Material: Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide
Supplemental Material: Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide Open
File S1: AMS data. File S2: Dike paleopole data. File S3: O and C isotope data. File S4: Fluid-inclusion data. File S5: U-Pb ages
View article: Geology and Aquifer Sensitivity of Quaternary Glacial Deposits Overlying a Portion of the Mahomet Buried Bedrock Valley Aquifer System
Geology and Aquifer Sensitivity of Quaternary Glacial Deposits Overlying a Portion of the Mahomet Buried Bedrock Valley Aquifer System Open
To characterize the distribution of Holocene and Late Quaternary deposits and to assess the contamination potential of the Mahomet Aquifer, surficial geologic and aquifer sensitivity maps of the Gibson City East 7.5-Minute Quadrangle were …
View article: Detrital zircons and sediment dispersal in the eastern Midcontinent of North America
Detrital zircons and sediment dispersal in the eastern Midcontinent of North America Open
Results of detrital-zircon analyses (U-Pb ages and initial Hf values, εHft) of Mississippian–Pennsylvanian sandstones in the Michigan, Illinois, and Forest City basins are remarkably similar to data for coeval sandstones in the Appalachian…
View article: Detrital Zircon Provenance and Lithofacies Associations of Montmorillonitic Sands in the Maastrichtian Ripley Formation: Implications for Mississippi Embayment Paleodrainage Patterns and Paleogeography
Detrital Zircon Provenance and Lithofacies Associations of Montmorillonitic Sands in the Maastrichtian Ripley Formation: Implications for Mississippi Embayment Paleodrainage Patterns and Paleogeography Open
We provide new detrital zircon evidence to support a Maastrichtian age for the establishment of the present-day Mississippi River drainage system. Fieldwork conducted in Pontotoc County, Mississippi, targeted two sites containing montmoril…
View article: Maximum depositional age of the Neoproterozoic Jacobsville Sandstone, Michigan: Implications for the evolution of the Midcontinent Rift: REPLY
Maximum depositional age of the Neoproterozoic Jacobsville Sandstone, Michigan: Implications for the evolution of the Midcontinent Rift: REPLY Open
We thank T.J. Bornhorst (2018) for consideration of our work on the Jacobsville Sandstone in northern Michigan. We engaged in this research to advance understanding of the geology of the Lake Superior region. As we began this project, we w…