David A. Budd
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View article: The history of calcite diagenesis and origin of exceptionally negative oxygen isotope values in chalks of the Niobrara Formation, Denver Basin, USA
The history of calcite diagenesis and origin of exceptionally negative oxygen isotope values in chalks of the Niobrara Formation, Denver Basin, USA Open
The Niobrara Formation of north‐east Colorado, USA, has anomalously negative δ 18 O values compared to all other Cretaceous chalks. These unique δ 18 O values have been attributed to elevated heat flow and/or freshening of the Cretaceous W…
View article: Spatial skills in undergraduate students—Influence of gender, motivation, academic training, and childhood play
Spatial skills in undergraduate students—Influence of gender, motivation, academic training, and childhood play Open
Spatial reasoning is critical for success in science, technology, engineering, and mathematics (STEM) disciplines and particularly for geoscience. To evaluate capabilities among U.S. students, we assessed spatial reasoning skills in 345 in…
View article: Formation of bed‐scale spatial patterns in dolomite abundance during early dolomitization: Part I. Mechanisms and feedbacks revealed by reaction–transport modelling
Formation of bed‐scale spatial patterns in dolomite abundance during early dolomitization: Part I. Mechanisms and feedbacks revealed by reaction–transport modelling Open
Dolomites of varied ages exhibit metre‐scale nested patterns of lateral periodic variation in permeability and porosity and, by inference, dolomite abundance as most examples are 100% dolomite. Two‐dimensional reaction–transport modelling …
View article: Autogenic Dynamics and Self-Organization in Sedimentary Systems
Autogenic Dynamics and Self-Organization in Sedimentary Systems Open
Autogenic dynamics and self-organization in sedimentary systems are increasingly viewed as significant and important processes that drive erosion, sediment transport, and sediment accumulation across the Earth’s surface. These internal dyn…