University of Durham
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The data consists of a spreadsheet containing rheology data for 39 samples of syrup, containing air bubbles and/or spherical glass particles. These data were used by Truby et al. (2014) to support a model for the rheology of a three-phase suspension. Each sample was placed in the rheometer (concentric cylinder geometry), and the stress was stepped up and then down, taking a measurement of strain rate at each step. Further details of the experiments may be found in Truby et al. (2014). NERC grant is NE/K500999/1. Co-author working with a NERC grant, NE/G014426/1.
Neodymium (Nd) concentrations, Nd radiogenic isotopes (143Nd/144Nd) and Nd stable isotopes (d146/144Nd) for chondritic meteorites, terrestrial basalts and mantle rocks, and rock reference materials.
Groundwater level measurements collected by the state groundwater boards of Punjab and Haryana states, India, and by the Central Groundwater Board. The data consist of well locations and measurements of groundwater levels, in metres below the top of the well casing. Data were collected in both the pre-monsoon (May-June) and post-monsoon (October-November) periods. Data availability is irregular across the entire suite of wells.
Data relates to the NERC Urgency Grant NE/R00210X/1 which focusses on Sediment signatures of the 25 December 2016 Chile earthquake to constrain detection limits of tidal marsh records. The documentation provides an overview of findings from two field seasons to the southern coast of Isla de Chiloé, Chile, including field observations, sediment samples and surface vegetation surveys. The research locations for diatom analyses are Ayentema, Asasao, Inio and Quilanlar, southern Chiloé, Chile. Field season 1 (excluding travel dates): 2-9 August 2017 Field season 2 (excluding travel dates): 6-16 October 2017 Diatom data collection: through to 30 June 2018
This project is aimed at understanding what kind of conditions the Earth's core formed under and how this affected the amount of oxygen present in the rocky interior of the Earth. It uses experiments which simulate the very high pressures and temperatures that would have been present in the Earth's interior when the core formed, combined with very precise chemical analyses of these experiments. From these results I will learn how certain chemical elements distributed themselves between the metal core and the rocky outer part of the Earth, and whether this distribution behaviour changes with different conditions and with the amount of oxygen present. By comparing the results I get from the experiments with the chemical compositions of rocks from the Earth and very primitive meteorites we will be able to understand better how the Earth's core formed, and how this may have affected the chemistry of our planet and the development of its atmosphere and oceans. Four papers are linked to this grant: Stable chromium isotopic composition of meteorites and metal-silicate experiments: Implications for fractionation during core formation Unlocking the zinc isotope systematics of iron meteorites Iron isotope tracing of mantle heterogeneity within the source regions of oceanic basalts Isotopic evidence for internal oxidation of the Earth's mantle during accretion
Due to differential loading of ice on Britain and Ireland the glacial isostatic adjustment (GIA) response and therefore sea-level record will vary with distance from the centre of the British Irish Ice Sheet. GIA models are tested against geological observations, however there is a paucity of observations below -10m depth and the lateglacial period when the BIIS retreated leading to a rapid response of both sea-level and GIA. The aim of the project was to use geophysical data, ground truthed by core material, to find evidence of lateglacial sea-level minima in the Irish and Celtic Sea to refine these GIA models. Cruise log and digital copies of the core information (location, water depth, core length) taken onboard the research cruise CE12008 on the RV Celtic Explorer. A GeoReseource 6m vibrocorer was used to collect sediment samples. Cores where taken at multiple sites and from southern and eastern Ireland: Bantry Bay, Dunmanus Bay, Waterford,Offshore County Louth and Dundalk Bay, offshore Isle of Man; offshore Wales: Cardingan Bay; and offshore Northern Ireland: Kilkeel and Dundrum Bay, Belfast Lough.
1. Rainfall (0.2 mm tipping bucket), accelerometer (OEM) and extensometer (string potentiometer) data from 10 instruments deployed across ground cracks in Sindhupalchok, Nepal in the aftermath of the 2015 earthquake. Data is provided in *.csv format, to include for each instrument: date, rainfall, extension(raw/min/max/mean/std), x(raw/min/max/mean/std), y(raw/min/max/mean/std), z(raw/min/max/mean/std). 2. Shapefiles of landslide mapping in the Upper Bhote Kosi valley, Sindhupalchok, Nepal, Including immediately post-earthquake (pre-monsoon), and post-2015 monsoon.
This dataset contains major element, trace element and isotopic analyses for samples collected during the NERC project "Orogenic Plateau Magmatism" (NE/H021620/1) (2011-2014). Samples are late Cenozoic volcanic rocks erupted across centres of the Iranian or Armenian sectors of the Turkish-Iranian Plateau, during the ongoing Arabia-Eurasia continental collision. Results have been published in the following papers: Allen, M.B., Kheirkhah, M., Neill, I., Emami, M.H. & McLeod, C.L. (2013) Generation of arc and within-plate chemical signatures in collision zone magmatism: Quaternary lavas from Kurdistan Province, Iran. Journal of Petrology, 54,887-911. Kheirkhah, K., Neill, I., Allen, M.B. & Ajdari, K. (2013) Small-volume melts of lithospheric mantle during continental collision: late Cenozoic lavas of Mahabad, NW Iran. Journal of Asian Earth Sciences, 74, 37-49. http://dx.doi.org/10.1016/j.jseaes.2013.06.002. Kheirkhah, K., Neill, I. & Allen, M.B. (2015) Petrogenesis of OIB-like basaltic volcanic rocks in a continental collision zone: Late Cenozoic magmatism of Eastern Iran. Journal of Asian Earth Sciences, 106, 19-33. Neill, I., Meliksetian, K., Allen, M.B., Navasardyan, G. & Kuiper, K. (2015) Petrogenesis of mafic collision zone magmatism: The Armenian sector of the Turkish-Iranian Plateau. Chemical Geology, 403, 24-41. Neill, I., Meliksetian, K., Allen, M.B., Navarsardyan, G. & Karapetyan, S. (2013) Pliocene-Quaternary volcanic rocks of NW Armenia: magmatism and lithospheric dynamics within an active orogenic plateau. Lithos, 180-181, 200-215.
Geomorphological map of the Sutlej and Yamuna fans, northwestern India. Grant abstract: India is the largest agricultural user of groundwater in the world. The last 40 years has seen a revolutionary shift from large-scale surface water management to widespread groundwater abstraction, particularly in the northwestern states of Punjab, Haryana and Rajasthan. As a result of this, northwestern India is now a hotspot of groundwater depletion, with 'the largest rate of groundwater loss in any comparable-sized region on Earth' (Tiwari et al., 2009). This unsustainable use of groundwater becomes even more challenging when set increasing demands from a burgeoning population and industrialisation, together with potential but poorly understood effects of climate-driven changes in the water cycle. There are a number of innovative socio-economic strategies that can address this issue, including enhanced recharge and subsurface water storage, but their implementation and success depend on solid regional understanding of the geology and hydrogeology of the aquifer systems, and of the patterns and rates of groundwater flow and recharge. What we know about regional groundwater resources comes largely from either low-resolution studies based on satellite data, or from local investigations; there has been no large-scale, cross-state integrated study of the groundwater system. Groundwater in northwestern India is thought to be largely hosted within buried, sandy former river channels, which extend from the Himalayas toward the southwest and are separated by fine-grained muds. Only a few channels are visible at the surface; most are buried and their existence must be inferred. Our approach is founded on the premise that we must first understand the geology and geometry of the aquifer system before we can hope to estimate the way it will respond to a complex set of future stresses. This means that we must be able to describe the locations, sizes, and characteristics of these channels as well as their age and three-dimensional pattern. Once these characteristics are determined, we can forecast the likely future behaviour of the system. In this proposal, we will provide, for the first time, a regional assessment of the aquifer system in northwestern India, along with models for its evolution under changes in the water cycle and in the way in which groundwater is used. Our project will combine expertise in sedimentology, stratigraphy, sediment routing and basin evolution, hydrology, and isotope geochemistry to understand the geological framework of the aquifer system, the ages of the groundwaters within it, and the ways in which groundwater levels are likely to evolve over the next 50 years. The outcomes of the proposal will include (1) a comprehensive data base that covers the northwestern Indian aquifer system, (2) much better understanding of regional sources, ages, and flow rates of groundwater, and (3) a suite of predictions for how the groundwater system will respond to a range of different future scenarios.
Fault lubrication during earthquake propagation in thermally unstable rocks in Central Italy Fieldwork pictures Fucino Basin Fault system: Castel di Monte fault Parasano fault Rocca Casale fault Venere fault Fieldwork pictures L’Aquila Fault System: Assergi fault Bitumen quarry Campo Imperatore Magnola fault Panoramic view Pettino fault Piani di pezza fault Vado di Corno fault Raw data from friction experiments. Links to associated papers: https://doi.org/10.1130/G35272.1 https://doi.org/10.1002/2015JB011914 http://dx.doi.org/10.1016/j.jsg.2013.10.008 http://dx.doi.org/10.1016/j.epsl.2011.09.001 http://dx.doi.org/10.1016/j.epsl.2015.09.002 http://dx.doi.org/10.1130/focus062013.1