A5057614364- Paleontology and Stratigraphy of Fossils
- Paleontology and Evolutionary Biology
- Geological and Geophysical Studies
- Geological formations and processes
- Geochemistry and Elemental Analysis
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Marine Biology and Ecology Research
- Coral and Marine Ecosystems Studies
- Marine Sponges and Natural Products
- Geophysical and Geoelectrical Methods
- Animal Nutrition and Physiology
- Evolution and Paleontology Studies
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Calcium Carbonate Crystallization and Inhibition
- Maritime and Coastal Archaeology
- Geophysical Methods and Applications
- Marine and environmental studies
- Animal Behavior and Welfare Studies
- Meat and Animal Product Quality
- Geological Formations and Processes Exploration
- Spectroscopy and Chemometric Analyses
- Geochemistry and Geologic Mapping
- Seismic Waves and Analysis
Brunel University of London
2016-2025
Natural History Museum
2021-2025
Universidad Autónoma de Ciudad Juárez
2015
University of Liège
2010-2013
Universiti Brunei Darussalam
2004
University of Nottingham
1995-1997
West Middlesex University Hospital
1980-1994
Arkansas Agricultural Experiment Station
1994
University of Liverpool
1987
Cardiff University
1978
Skeletal and non-skeletal components of marine sedimentary rocks have been analyzed for the purpose reconstructing rare earth element (REE) yttrium (Y) compositions paleo-seawater, but skeletal carbonates frequently proven to be unreliable recorders seawater chemistry. Here, we present a systematic multi-technique assessment other trace elements in ooid sands from modern Great Bahama Bank (GBB–marine) Salt Lake (GSL–continental) based on strong-acid (hydrofluoric nitric) weak-acid (acetic)...
Kershaw, Stephen & Riding, Robert 1978 07 15: Parameterization of stromatoporoid shape. Lethaia, Vol. 11. pp. 233–242. Oslo. ISSN 0024–1164. Stromatoporoid cross-sectional shape can be considered as a product the interaction three morphological variables: relative proportions basal, vertical and diagonal dimensions. The gross arrangement internal lamination superimposed upon resulting outlines. These shapes are taken to represent cross sections in any plane through centre coenosteum. This...
Kershaw, Stephen 1980 10 15: Cavities and cryptic faunas beneath non-reef stromatoporoids. Lethaia, Vol. 13, pp. 327–338. Oslo. ISSN 0024–1161. Stromatoporoids from level-bottom shales argillaceous limestones in the Silurian of Gotland, Sweden, form substrates for a variety encrusting boring organisms. Overturned stromatoporoids have encrusters borers on both upper lower surfaces, while coenostea preserved situ surfaces but borings only. This suggests that cavities, now infilled, existed...
The timing and tectonic evolution of the closure Paleo-Tethys Ocean remain controversial, with dates ranging from Late Permian time to Jurassic. Field mapping shows that regional Kaixinling unconformity lies between Upper Permian−Middle Triassic Nayixiong Formation Middle−Upper Jiapila in North Qiangtang terrane China. It is characterized by ∼50-cm-thick weathering crust abrupt changes stratigraphy, lithofacies, biological realms area. Zircon U-Pb dating interlayered tuffs siliceous dolomite...
Stromatoporoid sponges were important reef-builders during the middle Paleozoic, yet their early history and integration into reef ecosystems remain poorly understood. Here, we report Lophiostroma leizunia Jeon sp. nov., oldest known stromatoporoid from upper Tremadocian to lower Floian (~480 My-old) strata of South China. L. formed complex structures, playing crucial roles in framework construction binding other components, including calcimicrobes, lithistid sponges, stalked echinoderms,...
Abstract Ostracods (Crustacea) are benthic inhabitants well known for their consistent qualities as paleoenvironment markers. In particular, they reliable indicators of water oxygenation level: filter feeders more common in poor oxygen conditions, contrasting with deposit feeders, which abundant well-oxygenated settings. the Permian/Triassic (P/Tr) boundary transition Great Bank Guizhou, ostracod species dominated by showing conditions from latest Permian, through extinction level into...
Abstract Reports of diverse vermiform and peloidal structures in Neoproterozoic to Mesozoic open marine peritidal carbonates include cases interpreted be keratose sponges. However, living sponges have elaborate, highly elastic skeletons spongin (a mesoscopic end‐member a hierarchical assemblage collagenous structures) lacking spicules, thus poor preservation potential contrast the more easily fossilized spicule‐bearing Such fossil comprise layered, network, amalgamated, granular variegated...
Abstract Previous work indicates that a variety of microbes bloomed in the oceans after end‐Permian faunal mass extinction, but evidence is sporadically documented. Thus, nature and geographic distribution such their associations are unclear, addressed this study using series biomarker groups. On basis microbial records 2‐methylhopane index, presented for cyanobacterial blooms both western eastern Tethys Sea shallow deep waters, extinction. The enhanced relative abundance C 28 (expressed by...
Permian–Triassic boundary microbialites (PTBMs) are commonly interpreted to be a sedimentary response upwelling of anoxic alkaline seawater and indicate harsh marine environment in the transition. However, recent studies propose that PTBMs may instead developed an oxic environment, therefore necessitating need reassess paleoenvironment formation PTBMs. This paper is integrated study PTBM sequence at Yudongzi, northwest Sichuan Basin, which one thickest units south China. Analysis conodont...
Seawater intrusion into near-shore aquifers is one of the main environmental problems that affect Mediterranean islands. Crete biggest and most populated island Greece, characterized by limited surface waters strong dependence on groundwater sources as primary source natural water supply for extensive agricultural activity human use. Freshwater demand in has increased notably last decades. The Geropotamos aquifer located north-central coast freshwater management a delicate balance with...
Four stromatoporoid species from a biostrome in the middle Ludlow Hemse Beds, Gotland, Sweden, show intergrowths with syringoporid tabulate and rugose corals, indicate close relationships between particular coral species. The Clathrodictyon convictum always contains ?Syringopora this is rarely found other stromatoporoids. C. also closely associated Tryplasma flexuosum (rugosa) while Petrozium pelagicum occurs only stromatoporoids Plectostroma intermedium Parallelostroma typicum....