John S. Singleton
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View article: Structural analysis of brittle-plastic shear zones in the Sangre de Cristo Range, southern Colorado, USA: Superposition of Rio Grande rift extension on Laramide contraction
Structural analysis of brittle-plastic shear zones in the Sangre de Cristo Range, southern Colorado, USA: Superposition of Rio Grande rift extension on Laramide contraction Open
The Sangre de Cristo Range in southern Colorado exposes some of the deepest Cenozoic structural levels in the Rocky Mountain region, including mylonitic shear zones associated with both the Laramide orogeny and Rio Grande rift. We investig…
View article: Influence of water on crystallographic preferred orientation patterns in a naturally deformed quartzite
Influence of water on crystallographic preferred orientation patterns in a naturally deformed quartzite Open
Laboratory experiments demonstrate that intragranular water exerts an important control on deformation within quartz, causing weakening and promoting plasticity. The role of water in natural quartz deformation, however, remains unclear, as…
View article: Influence of water on crystallographic preferred orientation patterns in a naturally-deformed quartzite
Influence of water on crystallographic preferred orientation patterns in a naturally-deformed quartzite Open
Laboratory experiments demonstrate that intragranular water exerts an important control on deformation within quartz, causing weakening and promoting plasticity. The role of water on natural quartz deformation, however, remains unclear, as…
View article: Evolution of Miocene normal and dextral faulting in the lower Colorado River region near Blythe, California, USA
Evolution of Miocene normal and dextral faulting in the lower Colorado River region near Blythe, California, USA Open
The evolution of strain in nascent continental plate boundaries commonly involves distributed deformation and transitions between different styles of deformation as the plate boundary matures. Distributed NW-striking faults, many with km-s…
View article: Late Cretaceous‐Early Paleogene Extensional Ancestry of the Harcuvar and Buckskin‐Rawhide Metamorphic Core Complexes, Western Arizona
Late Cretaceous‐Early Paleogene Extensional Ancestry of the Harcuvar and Buckskin‐Rawhide Metamorphic Core Complexes, Western Arizona Open
Metamorphic core complexes in the western North American Cordillera are commonly interpreted as the result of a single phase of large‐magnitude extension during the middle to late Cenozoic. We present evidence that mylonitic shear zones in…
View article: Late Cretaceous-early Paleogene extensional ancestry of the Harcuvar and Buckskin-Rawhide metamorphic core complexes, western Arizona
Late Cretaceous-early Paleogene extensional ancestry of the Harcuvar and Buckskin-Rawhide metamorphic core complexes, western Arizona Open
Metamorphic core complexes in the western North American Cordillera are commonly interpreted as the result of a single phase of large-magnitude extension during the middle to late Cenozoic. We present evidence that mylonitic shear zones in…
View article: Supplemental Material: The Buckskin-Rawhide and northern Plomosa Mountains metamorphic core complexes, west-central Arizona, USA Item
Supplemental Material: The Buckskin-Rawhide and northern Plomosa Mountains metamorphic core complexes, west-central Arizona, USA Item Open
Google Earth kmz files with details about locations and specific outcrops
View article: Supplemental Material: The Buckskin-Rawhide and northern Plomosa Mountains metamorphic core complexes, west-central Arizona, USA Item
Supplemental Material: The Buckskin-Rawhide and northern Plomosa Mountains metamorphic core complexes, west-central Arizona, USA Item Open
Google Earth kmz files with details about locations and specific outcrops
View article: Supplemental Material: The Buckskin-Rawhide and northern Plomosa Mountains metamorphic core complexes, west-central Arizona, USA
Supplemental Material: The Buckskin-Rawhide and northern Plomosa Mountains metamorphic core complexes, west-central Arizona, USA Open
Table S1A: Detrital zircon U-Pb geochronology data at University of California–Santa Cruz, Table S1B: Detrital zircon U-Pb geochronology data at the University of Arizona Laserchron Center, Table S2: Finite strain data, and Table S3: Raman…
View article: Supplementary File 3. All U–Pb Data. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence
Supplementary File 3. All U–Pb Data. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence Open
Supplementary File 3. All U–Pb Data
View article: Supplementary File 1. Sample Locations & Modal Percentages. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence
Supplementary File 1. Sample Locations & Modal Percentages. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence Open
Supplementary File 1. Sample Locations & Modal Percentages
View article: Supplementary File 2. Structural data with locations. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence
Supplementary File 2. Structural data with locations. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence Open
Supplementary File 2. Structural data with locations.
View article: Supplementary File 4. All (U–Th)/He Data. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence
Supplementary File 4. All (U–Th)/He Data. Magnitude, timing, and rate of slip along the Atacama fault system, northern Chile: Implications for Early Cretaceous slip partitioning and plate convergence Open
Supplementary File 4. All (U–Th)/He Data
View article: Lithologic, geomorphic, and permafrost controls on recent landsliding in the Alaska Range
Lithologic, geomorphic, and permafrost controls on recent landsliding in the Alaska Range Open
Because landslide regimes are likely to change in response to climate change in upcoming decades, the need for mechanistic understanding of landslide initiation and up-to-date landslide inventory data is greater than ever. We conducted sur…
View article: The early Palaeogene transition from thin-skinned to thick-skinned shortening in the Potosí uplift, Sierra Madre Oriental, northeastern Mexico
The early Palaeogene transition from thin-skinned to thick-skinned shortening in the Potosí uplift, Sierra Madre Oriental, northeastern Mexico Open
The central Sierra Madre Oriental in Mexico developed primarily in the Late Cretaceous to early Palaeogene as a thin-skinned fold belt above a décollement hosted in Jurassic evaporite. In some regions shortening transitioned to sub-décolle…
View article: Supplemental Material: Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation
Supplemental Material: Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation Open
Geosphere, February 2020, v. 16, no. 1, 111-135, doi:10.1130/GES02104.1, Supplemental Material. Data Item 1: fault compilation references, supplemental figures, decompaction parameters, and rose diagram output data. Data Item 2: Fault geom…
View article: Timing, Kinematics, and Displacement of the Taltal Fault System, Northern Chile: Implications for the Cretaceous Tectonic Evolution of the Andean Margin
Timing, Kinematics, and Displacement of the Taltal Fault System, Northern Chile: Implications for the Cretaceous Tectonic Evolution of the Andean Margin Open
An extensive system of NW striking faults constitutes a major tectonic feature of the Coastal Cordillera in northern Chile, but fundamental questions remain about timing and kinematics of these structures. We present new geologic mapping a…
View article: The early Palaeogene transition from thin-skinned to thick-skinned shortening in the Potosí uplift, Sierra Madre Oriental, northeastern Mexico
The early Palaeogene transition from thin-skinned to thick-skinned shortening in the Potosí uplift, Sierra Madre Oriental, northeastern Mexico Open
The central Sierra Madre Oriental in Mexico developed primarily in the Late Cretaceous to early Palaeogene as a thin-skinned fold belt above a décollement hosted in Jurassic evaporite. In some regions shortening transitioned to sub-décolle…
View article: Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation
Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation Open
Structural evidence presented here documents that deformation was ongoing within the lower Colorado River corridor (southwestern USA) during and after the latest Miocene Epoch, postdating large-magnitude extension and metamorphic core comp…
View article: Distributed Neogene faulting across the western to central Arizona metamorphic core complex belt: Synextensional constriction and superposition of the Pacific–North America plate boundary on the southern Basin and Range
Distributed Neogene faulting across the western to central Arizona metamorphic core complex belt: Synextensional constriction and superposition of the Pacific–North America plate boundary on the southern Basin and Range Open
We present fault data from a belt of Miocene metamorphic core complexes in western and central Arizona (USA) to determine patterns of brittle strain during and after large-magnitude extension, and to evaluate the magnitude of postextension…
View article: Geologic map and structural development of the northernmost Sur-Nacimiento fault zone, central California coast
Geologic map and structural development of the northernmost Sur-Nacimiento fault zone, central California coast Open
The Sur-Nacimiento fault exposed along the central California coast (United States) juxtaposes the Salinian block arc against the Nacimiento block accretionary complex, cuts out the majority of the forearc basin and western arc, and requir…
View article: Geodynamics of Cenozoic extension along a transect across the Colorado River extensional corridor, southwestern USA
Geodynamics of Cenozoic extension along a transect across the Colorado River extensional corridor, southwestern USA Open
The Colorado River extensional corridor in southwestern North America is one of Earth's most highly extended regions of continental crust. The central part of the belt includes three imbricate, regionally northeast-dipping extensional deta…
View article: Orocopia Schist in the northern Plomosa Mountains, west-central Arizona: A Laramide subduction complex exhumed in a Miocene metamorphic core complex
Orocopia Schist in the northern Plomosa Mountains, west-central Arizona: A Laramide subduction complex exhumed in a Miocene metamorphic core complex Open
We document field relationships, petrography, and geochemistry of a newly identified exposure of Orocopia Schist, a Laramide subduction complex, in the northern Plomosa Mountains metamorphic core complex of west-central Arizona (USA). This…
View article: The role of calcite-rich metasedimentary mylonites in localizing detachment fault strain and influencing the structural evolution of the Buckskin-Rawhide metamorphic core complex, west-central Arizona
The role of calcite-rich metasedimentary mylonites in localizing detachment fault strain and influencing the structural evolution of the Buckskin-Rawhide metamorphic core complex, west-central Arizona Open
Although crystalline rocks dominate the footwall of the Buckskin-Rawhide detachment fault in west-central Arizona (USA), we estimate that thin (<1 to 100 m thick) calcite-rich metasedimentary mylonites were present along 25%–35% of the det…
View article: Advancing Practical Specification Techniques for Modern Software Systems
Advancing Practical Specification Techniques for Modern Software Systems Open
The pervasive nature of software (and the tendency for it to contain errors) has long been a concern of theoretical computer scientists. Many investigators have endeavored to produce theories, tools, and techniques for verifying the behavi…