Michael H. Hofmann

Synchronous authigenic albite and dolomite formation in carbonates

Michael H. Hofmann, Mitchell C. Sherry

ABSTRACT Understanding the drivers of authigenic mineral formation in low permeability carbonate reservoirs is critical to model sedimentary basin history and to predict reservoir quality. The aim of this study is to define a mechanism that explains the curious juxtaposition of authigenic …

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GEO 391.01: Roadside Geology of the Western United States - Spring Break Geosciences Field Trip

Michael H. Hofmann

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Shale compositional trends in the Cenomanian–Turonian Cretaceous Western Interior Seaway: facies and sequence stratigraphic models

Bruce S. Hart, Michael H. Hofmann, Guy Plint, M P B Nicolas

ABSTRACT Predictive facies and sequence-stratigraphic models (Hart 2015, 2016) for fine-grained sediment deposition associated with a peak transgression in an epeiric seaway have been tested here using elemental, mineralogical, TOC, and wireline log data. Our samples were collected from close to the …

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Failure to launch: Fate of the Second White Specks as a resource play was preordained by its Late Cretaceous depositional setting

Bruce S. Hart, Jüergen Schieber, Michael H. Hofmann, A. Guy Plint

ABSTRACT We compare the Second White Specks and Belle Fourche Formations (2WS/BF) of Alberta, Canada to the Eagle Ford Formation shale (EF) of southern Texas and, to a lesser extent, the Tuscaloosa marine shale (TMS) of Louisiana and Mississippi. These units were …

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Gypsum‐lined degassing holes in tumuli

Michael H. Hofmann, Nancy W. Hinman, Michael Phillips, Michael McInenly et autres

Abstract Small, circular holes, lined with a thin gypsum veneer, and closely associated with gypsum tumuli (domes), occur at Salar de Pajonales, a salt flat in the northern Andes, Chile. We propose a model in which the formation of the gypsum‐lined holes, …

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The importance of inherited shelf bathymetry, pycnoclines, and wave-enhanced sediment dispersal perturbations as part of the taphonomic process

Michael H. Hofmann, Lindsay Ann MacKenzie, Nancy W. Hinman

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Orbit-to-ground framework to decode and predict biosignature patterns in terrestrial analogues

Kimberley Warren‐Rhodes, Nathalie A. Cabrol, Michael Phillips, Cinthya Tebes-Cayo et autres

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Salt Constructs in Paleo-Lake Basins as High-Priority Astrobiology Targets

Michael Phillips, Michael McInenly, Michael H. Hofmann, Nancy W. Hinman et autres

In extreme environments, microbial organisms reside in pockets with locally habitable conditions. Micro-climates conducive to the persistence of life in an otherwise inhospitable environment—“refugia”—are spatially restricted and can be micro- to centimeters in extent. If martian microbes are preserved in fossil refugia, …

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QUARTZ SOURCE DETERMINATION USING PANCHROMATIC CATHODOLUMINESCENCE AND PETROGRAPHY - A USEFUL TOOL IN PROVENANCE ANALYSIS

Carson Broaddus, Michael H. Hofmann

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Salt constructs in paleo-lake basins as high-priority astrobiology targets.

Michael Phillips, Kimberley Warren‐Rhodes, Nancy W. Hinman, Jeffrey E. Moersch et autres

Introduction In environments where it is difficult for life to function, microbial organisms tend to inhabit pockets of locally favorable climatic conditions. Micro-climates conducive to the persistence of life in an otherwise inhospitable environment – “refugia” – are spatially restricted and can …

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Revisiting Paleoenvironmental Analyses and Interpretations of Organic-Rich Deposits: The Importance of TOC Corrections

Bruce S. Hart, Michael H. Hofmann

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Surface Morphologies in a Mars-Analog Ca-Sulfate Salar, High Andes, Northern Chile

Nancy W. Hinman, Michael H. Hofmann, Kimberly Warren-Rhodes, Michael Phillips et autres

Salar de Pajonales, a Ca-sulfate salt flat in the Chilean High Andes, showcases the type of polyextreme environment recognized as one of the best terrestrial analogs for early Mars because of its aridity, high solar irradiance, salinity, and oxidation. The surface of …

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