Institution
British Geological Survey
Government•Nottingham, United Kingdom•
About: British Geological Survey is a government organization based out in Nottingham, United Kingdom. It is known for research contribution in the topics: Groundwater & Aquifer. The organization has 2561 authors who have published 7326 publications receiving 241944 citations.
Topics: Groundwater, Aquifer, Glacial period, Groundwater recharge, Holocene
Papers published on a yearly basis
Papers
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TL;DR: A thin, regionally extensive, laterally persistent sand layer identified within the Holocene coastal sequences of eastern Scotland, dated to 7000 years BP, is suggested to be a tsunami deposit.
Abstract: A thin, regionally extensive, laterally persistent sand layer identified within the Holocene coastal sequences of eastern Scotland, dated to 7000 years BP, is suggested to be a tsunami deposit. The likely source of the tsunami wave is the earthquake induced second Storegga Slide on the Norwegian continental slope at least 750 km northeast of the deposit.
113 citations
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University of Texas at Austin1, Pennsylvania State University2, Florida State University3, University of Granada4, VU University Amsterdam5, University of Alaska Fairbanks6, Vrije Universiteit Brussel7, California Institute of Technology8, Imperial College London9, British Geological Survey10, University of Burgundy11, University of Edinburgh12, Curtin University13, Naturhistorisches Museum14, Tohoku University15, Lunar and Planetary Institute16, University of Montpellier17, University of Strasbourg18, National Autonomous University of Mexico19, University of Glasgow20, University of Freiburg21, University of Hamburg22, Chiba Institute of Technology23, Rutgers University24, Japan Agency for Marine-Earth Science and Technology25, Arizona State University26, China University of Geosciences (Wuhan)27, Toho University28, NASA Astrobiology Institute29, Aix-Marseille University30
TL;DR: Micro- and nannofossil, trace fossil and geochemical evidence from the Chicxulub impact crater demonstrates that proximity to the asteroid impact site did not determine rates of recovery of marine ecosystems after the end-Cretaceous mass extinction.
Abstract: The Cretaceous/Palaeogene mass extinction eradicated 76% of species on Earth1,2. It was caused by the impact of an asteroid3,4 on the Yucatan carbonate platform in the southern Gulf of Mexico 66 million years ago
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, forming the Chicxulub impact crater6,7. After the mass extinction, the recovery of the global marine ecosystem—measured as primary productivity—was geographically heterogeneous
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; export production in the Gulf of Mexico and North Atlantic–western Tethys was slower than in most other regions8–11, taking 300 thousand years (kyr) to return to levels similar to those of the Late Cretaceous period. Delayed recovery of marine productivity closer to the crater implies an impact-related environmental control, such as toxic metal poisoning
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, on recovery times. If no such geographic pattern exists, the best explanation for the observed heterogeneity is a combination of ecological factors—trophic interactions
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, species incumbency and competitive exclusion by opportunists
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—and ‘chance’8,15,16. The question of whether the post-impact recovery of marine productivity was delayed closer to the crater has a bearing on the predictability of future patterns of recovery in anthropogenically perturbed ecosystems. If there is a relationship between the distance from the impact and the recovery of marine productivity, we would expect recovery rates to be slowest in the crater itself. Here we present a record of foraminifera, calcareous nannoplankton, trace fossils and elemental abundance data from within the Chicxulub crater, dated to approximately the first 200 kyr of the Palaeocene. We show that life reappeared in the basin just years after the impact and a high-productivity ecosystem was established within 30 kyr, which indicates that proximity to the impact did not delay recovery and that there was therefore no impact-related environmental control on recovery. Ecological processes probably controlled the recovery of productivity after the Cretaceous/Palaeogene mass extinction and are therefore likely to be important for the response of the ocean ecosystem to other rapid extinction events.
113 citations
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TL;DR: The importance of radon maps that show the variation of indoor radon concentrations both between and within mapped geological boundaries is confirmed, as well as the level of detail of the digital geological data.
113 citations
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TL;DR: High concentrations of diuron and metabolites were still present in the soil and soil solutions after 50 days and remain as a source of potential groundwater contamination and a preferential route for diuron transport is suggested.
112 citations
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TL;DR: In this article, the possibility of determining palaeolatitudes of the enigmatic widespread Late Proterozoic glaciations by isotopic analysis of freshwater periglacial calcareous precipitates is raised.
Abstract: The dominantly shallow-marine Vendian succession of NE Spitsbergen contains distinctive types of carbonate rock. Limestones deposited before Vendian glaciation resemble those described from other Upper Proterozoic successions, being high in Sr and inferred to have been originally aragonitic, including the distinctive 5–10 Jim equant polygonal calcite of cemented shrinkage cracks. In contrast, manganoan stromatolitic limestones within marginal-marine glacial-outwash deposits, and consisting of micrite, microspar and fascicular-optic calcite are interpreted as originally calcitic. The restriction of primary marine calcite to cold seawater is comparable with Recent and Permian carbonates, although the Precambrian example formed in a sea diluted with meltwater.
There is good textural preservation of relatively 18O-rich oolitic dolostones which were cemented in a supratidal environment by artesian fluids. Nevertheless, early diagenetic replacement is inferred, immediately prior to a glacial episode. Post-glacial dolostones are either replacive marine, or evaporative lacustrine, but share rather more negative δ18O values, closer to the mean of Late Precambrian dolostones.
The heaviest oxygen isotope values constrain seawater δ18O to no more negative than — 2 to — 4SMOW. The main reason for the pronounced oxygen isotopic depletion of most Late Precambrian carbonates is their initial metastable mineralogy. The possibility of determining palaeolatitudes of the enigmatic widespread Late Proterozoic glaciations by isotopic analysis of freshwater periglacial calcareous precipitates is raised. Significant carbon isotope variations reflect changes in depositional water chemistry: some of these could be global in extent.
112 citations
Authors
Showing all 2591 results
Name | H-index | Papers | Citations |
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Randall R. Parrish | 68 | 212 | 16398 |
David J.A. Evans | 67 | 422 | 16984 |
Melanie J. Leng | 67 | 494 | 18588 |
Benjamin P. Horton | 65 | 278 | 12838 |
Jim W. Hall | 64 | 409 | 16381 |
Robert J. Pankhurst | 63 | 173 | 12938 |
Luuk K. Koopal | 63 | 210 | 13240 |
António Ferreira | 63 | 458 | 13726 |
Russell S. Harmon | 62 | 259 | 12597 |
Edward Tipping | 62 | 207 | 14676 |
Jon Woodhead | 61 | 226 | 16730 |
Gavin L. Foster | 61 | 182 | 12524 |
Paul Eggleton | 61 | 168 | 13421 |
Colin E. Snape | 60 | 430 | 14283 |
Andrew Binley | 59 | 278 | 16075 |