A5031073379- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- Geological and Geophysical Studies
- Geological Studies and Exploration
- Geology and Paleoclimatology Research
- Astro and Planetary Science
- Planetary Science and Exploration
- Water-Energy-Food Nexus Studies
- Geological Modeling and Analysis
- Water resources management and optimization
- Space Science and Extraterrestrial Life
- Geophysical and Geoelectrical Methods
- Transboundary Water Resource Management
- Offshore Engineering and Technologies
- Freedom of Expression and Defamation
- Metallurgy and Cultural Artifacts
- Mental Health and Patient Involvement
- Paleontology and Stratigraphy of Fossils
- NMR spectroscopy and applications
- Legal Cases and Commentary
- Cryospheric studies and observations
- Plant Physiology and Cultivation Studies
- American Constitutional Law and Politics
Arizona State University
2016-2024
Royal Cornhill Hospital
2023
The Open University
2012-2019
University of Cambridge
2018
Cambridge University Press
2018
University of South Carolina
2004
40Ar/39Ar thermochronology is commonly used to constrain the rates and times of cooling in exhumed metamorphic terranes, with ages usually linked temperature via Dodson's closure (TC) formulation. Whilst many data are consistent timing crystallisation or within a chronological framework defined by other, higher temperature, chronometers, other more difficult interpret. We report white mica biotite single grain fusion laser ablation from felsic gneisses Western Gneiss Region, Norway. The...
Abstract The South Tibetan detachment system (STDS) is one of the most important deformational features in Himalayan orogen; yet its evolution space and time remain incompletely understood. Here, we present results a new study primary, basal strand STDS Annapurna Himalaya central Nepal: detachment. original discovery outcrop this structure Kali Gandaki valley reveals that multiple leucogranite bodies are variably deformed by ductile slip on New laser‐ablation (U‐Th)/Pb dating complex...
Abstract In northern Turkey, the Intra-Pontide suture zone represents one of first-order tectonic structures located between Istanbul–Zonguldak and Sakarya continental terranes. It consists an E–W-trending assemblage deformed variably metamorphosed units, including sedimentary rocks ophiolites derived from a Neo-Tethyan oceanic basin, known as basin. One these units is represented by Daday Unit that block-in-matrix supra-subduction crust related deep-sea cover Middle Jurassic age. This...
The 40Ar/39Ar ages of metamorphic micas that crystallized at high temperatures are commonly interpreted as cooling ages, with grains considered to have lost 40Ar via thermally-driven diffusion into the grain boundary network. Recently reported laser-ablation data suggest spatial distribution Ar in does not always conform patterns predicted by theory and despite temperatures, argon was removed efficiently from local system during evolution. In Western Gneiss Region (WGR), Norway, felsic...
New 40 Ar/ 39 Ar thermochronological and deformation temperature analyses in the Scandian ( c. 435–420 Ma) orogenic retrowedge of northern Scotland demonstrate accelerated cooling during late syn- to post-orogenic exhumation high-grade core. Initial rates 10–30°C myr −1 immediately following peak orogenesis transitioned rapid 45–90°C final Naver thrust sheet The flanking ductile sheets exhibit a similar, albeit less pronounced, acceleration cooling, with increasing by c . 150–300%...
Abstract Tectonic models are commonly underpinned by metamorphic cooling rates derived from diffusive‐loss thermochronology data. Such ages usually linked to temperature via Dodson's closure ( T C ) formulation, which specifies a 1/time‐shaped path (Contributions Mineralogy and Petrology, 1973, 40, 259). Geologists, however, discuss as linear temperature/time shape. We present the results of series simple finite‐difference diffusion for Ar in muscovite biotite that show difference recorded...
Abstract The Benkar Fault Zone (BFZ) is a recently recognized, NNE-striking, brittle to ductile, cross fault that cuts across the dominant metamorphic fabric of Greater Himalayan Sequence (GHS) and Lesser (LHS) in eastern Nepal. 40Ar/39Ar-muscovite cooling ages along transect BFZ GHS indicate movement younger than 12 Ma. To understand mode genesis, seismo-tectonic implications BFZ, we mapped this from Everest region upper Khumbu valley toward south, Main Central Thrust, into LHS Nappe. We...
Aims and method At the start of a new community perinatal mental health service in Scotland we sought opinions aspirations professional lay stakeholders. A student elective project supported creation an anonymous 360-degree online survey variety staff people with lived experience suffering from or managing problems. The was designed piloted trainees volunteer patients. Results rich gathered 60 responses, which came reasonably representative sample. Respondents provided specific answers to...
To understand the evolution of Himalayan orogen, we first need to how South Tibetan Detachment System (STDS) evolved through time and space. We present new (and previously published) thermochronological results from a transect in footwall ductile shear zone basal structure STDS Kali Gandaki region: Annapurna detachment. The exhumation history is interpreted observations using 1D thermal–kinematic models that invert give rate samples. Recently published data have suggested high-temperature...