Philip W Hill 1937–1999     

Ron Hilditch 《Astronomy& Geophysics》2000,41(1):1.35-1.36

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Reply to discussion of Jamaican cenozoic ichnology: review and prospectus: (v. 50, p. 364–382)     

Stephen K. Donovan  Ron K. Pickerill 《Geological Journal》2015,50(4):542-544

Mitchell and Ramsook comment on the lithostratigraphic assignment of Jamaican Cenozoic ichnofossils discussed in Donovan et al. They argue that the Paleogene Richmond Formation should be subdivided to produce a ‘Moore Town formation’ in eastern Jamaica, but the latter remains undefined as a lithostratigraphic unit and no new lithostratigraphic evidence is produced to support their supposition. Further, their use of a flawed table of trace fossil distributions does not support their thesis. The distribution of trace fossils in the White Limestone Group presented by Donovan et al. follows the lithostratigraphic scheme that was current at the time that the research was originally undertaken in the early 2000s. Yet, whatever lithostratigraphic scheme is utilised for the island, it is apparent that the more accurate data is provided by the biostratigraphy of the larger benthic foraminifers. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   

Geographic Thought: A Critical Introduction by Tim Cresswell. Wiley‐Blackwell,Chichester, 2013, pp. viii + 290 (ISBN 978‐1‐4051‐6940‐0) (hbk) (ISBN 978‐1‐4051‐6939‐4) (pbk).     

Ron Johnston 《Singapore journal of tropical geography》2014,35(2):282-285

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Graduated incarceration: The Israeli occupation in subaltern geopolitical perspective     

Ron J. Smith 《Geoforum》2011,42(3):316-328

This paper highlights the importance of analysis of the microgeographies of occupation, and the spatially-differentiated means that the Israeli Occupation Forces use to maintain the occupation and create spaces of graduated incarceration for Palestinians. Using the examples of the hinterlands of Qalqiliyah and the old city of Al-Khalil (Hebron) in the occupied West Bank, this paper exposes the microgeographical differentiation the occupation mobilizes in its attempt to enact a panoptic sovereignty over the population, in the process of dispossession. This study challenges geopolitical formations of the state as primary actor, and focuses instead on narratives of Palestinians describing their own experiences of occupation by a hostile state. By relying on popular media, semi-structured interviews, and participant observation, this paper seeks to incorporate a Palestinian vision of life under occupation to challenge traditional geopolitical visions of the Palestinian Israeli conflict, in effect creating a subaltern geopolitical narrative.  相似文献   

Using spatial statistics to identify and characterise ethnoburbs: establishing a methodology using the example of Auckland,New Zealand     

Ron Johnston  Michael Poulsen  James Forrest 《GeoJournal》2011,76(5):447-467

Recent studies in the United States and other Pacific Rim countries have identified a new form of ethnic minority group clustering within the residential mosaic—ethnoburbs. These are suburban in location, occupied by relatively high-income, predominantly Asian, immigrants, and low density in their nature: many migrants move directly to those suburbs rather than the inter-generational outward migration from central city clusters typical of other migrant streams. Although ethnoburb residents tend to cluster in particular segments of the built-up area they do not to form large percentages of the population there. As yet, no methodology has been developed to identify these clusters, as a prelude to identifying their characteristics. This paper offers such a procedure, based on local statistical analysis. It is applied to six Asian groups in Auckland, New Zealand.  相似文献   

A case study in catchment hydrochemistry: Conflicting interpretations from hydrological and chemical observations     

Alan Jenkins  Robert C. Ferrier  Ron Harriman  Yinka O. Ogunkoya 《水文研究》1994,8(4):335-349

Soil water, stream water, groundwater and rain water were sampled through a storm event in a moorland catchment. Samples were analysed for major ions and deuterium. Chloride and deuterium are used as tracers to enable separation of the stream runoff hydrograph into three components: rain, soil and groundwater. The results indicate that rain water arrives in the stream quickly during the event and contributes a significant volume to the runoff peak. The chemical signal in the rain water is, however, significantly damped, apparently due to mixing with soil water held in the catchment before the event. This is further modified before reaching the stream, apparently through mixing with a deeper groundwater component. Interpretation of tracer, chemistry and hydrological data to present an integrated picture of catchment hydrochemical response is difficult due to problems in the chemical and conceptual definition of the flow components.  相似文献   

North American Earth Science Megaproject Continuum, Part 3: New Canadian EON-ROSE Program     

Katherine Boggs  David Eaton  Thomas James  Roy Hyndman  Malaika Ulmi  Pascal Audet  Ed Johnston  Michael Sideris  Ron Clowes  Julie Elliott  Jeff Freymueller  Paul Kushner  Kristin Morell  Derek Schutt  Rick Aster  Frank Vernon  Michael Hedlin  Catherine de Groot-Hedlin  Eric Donovan  Roland Stull 《《地质学报》英文版》2018,92(Z1):12-13

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Integrating Geodynamic Modeling with Geophysical and Geological Data: A LITHOPROBE Perspective     

Ron M. Clowes 《《地质学报》英文版》2018,92(Z1):127-128

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Pressure,temperature, and timing of mineralization of the sedimentary rock-hosted orogenic gold deposit at Klipwal,southeastern Kaapvaal Craton,South Africa     

Sakthi Saravanan Chinnasamy  Ron Uken  Jürgen Reinhardt  David Selby  Spencer Johnson 《Mineralium Deposita》2015,50(6):739-766

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Environmental Influences on Faecal Indicator Organisms in Coastal Waters and Their Accumulation in Bivalve Shellfish     

Carlos J. A. Campos  Simon R. Kershaw  Ron J. Lee 《Estuaries and Coasts》2013,36(4):834-853

Shellfish production areas are often located in shallow estuarine and coastal systems impacted by fluxes of faecal indicator organisms (FIOs) that exhibit extreme spatial and temporal variability. FIO abundance and distribution in the marine environment are determined by the combined effects of light intensity, water mixing, sewage content and suspended particulate matter. Favourable conditions for FIO survival are low solar radiation, low temperature, low salinity, low densities of micro-predators and high levels of organic matter. Rainfall is the parameter most commonly associated with peak levels of FIOs. Resuspension of contaminated sediments in the water column dominates FIO distribution in shallow and depositional estuaries during storm conditions. Water/flesh FIO ratios may differ between shellfish growing waters because salinities and water temperatures also influence filter-feeding activity. Data are lacking on the role of biological processes on FIOs uptake and clearance in shellfish, particularly during periods of good water quality. FIO accumulation is usually of higher magnitude in mussels and cockles than in oysters and surf clams. It is proposed that differences in FIO accumulation rates are associated with the biological activity and the position of shellfish in the water column in relation to the location of impacting pollution sources. Accurate information on catchment hydrology, land uses, FIO loads from sewerage-related sources and livestock production areas are required to adequately characterise the microbiological status of shellfisheries.  相似文献