David Morgan

Cardiff University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Graham J. Hutchings

Cardiff University

Thomas E. Davies

Cardiff University

Simon J. Freakley

University of Bath

Christopher J. Kiely

Lehigh University

Jennifer K. Edwards

Cardiff University

Peter J. Miedziak

University of South Wales

Richard J. Lewis

Cardiff University

Stuart H. Taylor

Cardiff University

Simon A. Kondrat

Loughborough University

Mark Douthwaite

Cardiff University

Cooperative Institutions

Cardiff University

University of Michigan–Ann Arbor

British Geological Survey

National Commission for the Knowledge and Use of Biodiversity

Universidad Autónoma Metropolitana

Cambridge University Press

Instituto de Ecología

Secretaría de Investigación, Innovación y Educación Superior

University of Cambridge

University College London

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Patterns of Population Distribution: A Residential Preference Model and Its Dynamic

Geographical Review (1979)

William B. Beyers David Morgan

10.2307/214812

Cite

Citations (12)

Book reviews

Clays and Clay Minerals (2007)

David Morgan

10.1007/bf03406019

Cite

Citations (0)

A. Singer & E. Galan (Editors). Palygorskite-Sepiolite: Occurrence, Genesis and Uses (Developments in Sedimentology, 37). Elsevier Scientific Publishing Co., Amsterdam and New York, 1984. viii + 352 pp. Price US$53.75 (Dfl. 140.00).

Clay Minerals (1985)

David Morgan

Palygorskite

Sepiolite

Scientific Publishing

10.1180/claymin.1985.020.2.13

Cite

Citations (11)

Thermal decomposition ractions of caledonite and their products

Mineralogical Magazine (1986)

David Morgan S.St.J. Warne S. B. Warrington P. H. A. Nancarrow

Abstract The thermal decomposition of caledonite has been examined by simultaneous differential thermal analysis, thermogravimetry and mass spectrometry. Structural H 2 O and CO 2 are liberated endothermically between 300 and 400°C leaving a residue of lead sulphate, oxysulphate, and Cu(I) and Cu(II) oxides. A series of sharp endothermic peaks between 850 and 950°C correspond to phase transition and melting reactions of the PbO-PbSO 4 mixture. The sulphate anion breaks down above 880 °C. Mass spectra of the gaseous decomposition products show SO 2 , SO, and O 2 , although SO is an artefact arising from ion fragmentation of the SO 2 within the mass spectrometer. The residue at 1060 °C is composed predominantly of 2PbO · PbSO 4 and Cu(I) and Cu(II) oxides.

Thermogravimetry

Endothermic process

Fragmentation

Differential thermal analysis

Residue (chemistry)

10.1180/minmag.1986.050.357.16

Cite

Citations (9)

The role of thermal analysis in the evaluation of impure clay deposits as mineral raw materials

Clay Minerals (1969)

J. A. Bain David Morgan

Although Thermal Analysis is a useful technique in characterizing the clay constituent of a potentially valuable clay deposit, it is, perhaps, even more useful when the type and amount of non-clay impurities are important factors in its commercial appraisal. The effect of impurities on the physical and chemical properties of the clay may determine its potential uses in bulk, or it may be advisable to remove the impurity, either to improve the grade and quality of the clay or to provide a useful by-product. The application of both qualitative and quantitative thermal data, in the analysis and control of laboratory work in this field, is demonstrated by its use in the assessment of materials such as evaporite-rich clays, siliceous clays, and high-alumina clays.

10.1180/claymin.1969.008.2.06

Cite

Citations (14)

Author Correction: Basin-scale study of CO2 storage in stacked sequence of geological formations

Scientific Reports (2024)

Nur Wijaya David Morgan Derek Vikara Timothy Grant Luciane Cunha

Sequence (biology)

10.1038/s41598-024-73100-9

Cite

Citations (0)

D. Kalló and H. S. Sherry. (editors). Occurrence, Properties and Utilization of Natural Zeolites. Budapest (Akadémiai Kiadó), 1988. xii + 857 pp., 256 figs. Price $69.00.

Mineralogical Magazine (1989)

David Morgan

An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content.

10.1180/minmag.1989.053.373.31

Cite

Citations (0)

Identification and estimation of carbonate minerals at low levels by evolved CO2 analysis

Nature (1980)

A. E. Milodowski David Morgan

Carbonate minerals

Differential thermal analysis

10.1038/286248a0

Cite

Citations (19)

Identification of the catalytically active component of Cu–Zr–O catalyst for the hydrogenation of levulinic acid to γ-valerolactone

Green Chemistry (2016)

Satoshi Ishikawa Daniel R. Jones Sarwat Iqbal C. Reece David Morgan

Surface Cu nanoparticles are the active component of Cu–ZrO₂ catalysts for the levulinic acid hydrogenation.

Levulinic acid

Component (thermodynamics)

Identification

Catalytic hydrogenation

10.1039/c6gc02598f

Cite

Citations (71)

Testing the utility of structure‐from‐motion photogrammetry reconstructions using small unmanned aerial vehicles and ground photography to estimate the extent of upland soil erosion

Earth Surface Processes and Landforms (2017)

Miriam Glendell Gareth McShane Luke Farrow M. R. James John Quinton

Abstract Quantifying the extent of soil erosion at a fine spatial resolution can be time consuming and costly; however, proximal remote sensing approaches to collect topographic data present an emerging alternative for quantifying soil volumes lost via erosion. Herein we compare terrestrial laser scanning (TLS), and both unmanned aerial vehicle (UAV) and ground photography (GP) structure‐from‐motion (SfM) derived topography. We compare the cost‐effectiveness and accuracy of both SfM techniques to TLS for erosion gully surveying in upland landscapes, treating TLS as a benchmark. Further, we quantify volumetric soil loss estimates from upland gullies using digital surface models derived by each technique and subtracted from an interpolated pre‐erosion surface. Soil loss estimates from UAV and GP SfM reconstructions were comparable to those from TLS, whereby the slopes of the relationship between all three techniques were not significantly different from 1:1 line. Only for the TLS to GP comparison was the intercept significantly different from zero, showing that GP is more capable of measuring the volumes of very small erosion features. In terms of cost‐effectiveness in data collection and processing time, both UAV and GP were comparable with the TLS on a per‐site basis (13.4 and 8.2 person‐hours versus 13.4 for TLS); however, GP was less suitable for surveying larger areas (127 person‐hours per ha −1 versus 4.5 for UAV and 3.9 for TLS). Annual repeat surveys using GP were capable of detecting mean vertical erosion change on peaty soils. These first published estimates of whole gully erosion rates (0.077 m a −1 ) suggest that combined erosion rates on gully floors and walls are around three times the value of previous estimates, which largely characterize wind and rainsplash erosion of gully walls. Copyright © 2017 John Wiley & Sons, Ltd.

Aerial photography

Structure from Motion

Ground truth

10.1002/esp.4142

Cite

Citations (85)