All Outputs (123)

Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin, UK) (2018)
Journal Article
Xu, W., Ruhl, M., Jenkyns, H. C., Leng, M. J., Huggett, J. M., Minisini, D., …Hesselbo, S. P. (2018). Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin, UK). Earth and Planetary Science Letters, 484, https://doi.org/10.1016/j.epsl.2017.12.037

The late Early Jurassic Toarcian Stage represents the warmest interval of the Jurassic Period, with an abrupt rise in global temperatures of up to ∼7 °C in mid-latitudes at the onset of the early Toarcian Oceanic Anoxic Event (T-OAE; ∼183 Ma). The T-... Read More about Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin, UK).

Age and growth rate estimations of the commercially fished gastropod Buccinum undatum (2018)
Journal Article
Hollyman, P. R., Chenery, S. R., Leng, M. J., Laptikhovsky, V. V., Colvin, C. N., & Richardson, C. A. (2018). Age and growth rate estimations of the commercially fished gastropod Buccinum undatum. ICES Journal of Marine Science, 75(6), 2129-2144. https://doi.org/10.1093/icesjms/fsy100

Calculating age and growth rate for the commercially important whelk, Buccinum undatum in the aid of fishery management has historically been undertaken using growth rings on the organic operculum. This is difficult due to their poor readability and... Read More about Age and growth rate estimations of the commercially fished gastropod Buccinum undatum.

A new high-resolution chronology for the late Maastrichtian warming event: establishing robust temporal links with the onset of Deccan volcanism (2017)
Journal Article
Barnet, J. S., Littler, K., Kroon, D., Leng, M. J., Westerhold, T., Röhl, U., & Zachos, J. C. (in press). A new high-resolution chronology for the late Maastrichtian warming event: establishing robust temporal links with the onset of Deccan volcanism. Geology, https://doi.org/10.1130/G39771.1

The late Maastrichtian warming event was defined by a global temperature increase of ∼2.5–5 °C that occurred ∼150–300 k.y. before the Cretaceous-Paleogene (K-Pg) mass extinction. This transient warming event has traditionally been associated with a m... Read More about A new high-resolution chronology for the late Maastrichtian warming event: establishing robust temporal links with the onset of Deccan volcanism.

Regional Holocene climate and landscape changes recorded in the large subarctic lake Torneträsk, N Fennoscandia (2017)
Journal Article
Meyer-Jacob, C., Bindler, R., Bigler, C., Leng, M. J., Lowick, S. E., & Vogel, H. (2017). Regional Holocene climate and landscape changes recorded in the large subarctic lake Torneträsk, N Fennoscandia. Palaeogeography, Palaeoclimatology, Palaeoecology, 487, https://doi.org/10.1016/j.palaeo.2017.08.001

Understanding the response of sensitive Arctic and subarctic landscapes to climate change is essential to determine the risks of ongoing and projected climate warming. However, these responses will not be uniform in terms of timing and magnitude acro... Read More about Regional Holocene climate and landscape changes recorded in the large subarctic lake Torneträsk, N Fennoscandia.

Post-mortem oxygen isotope exchange within cultured diatom silica (2017)
Journal Article
Tyler, J. J., Sloane, H. J., Rickaby, R. E., Cox, E. J., & Leng, M. J. (2017). Post-mortem oxygen isotope exchange within cultured diatom silica. Rapid Communications in Mass Spectrometry, 31(20), 1749-1760. https://doi.org/10.1002/rcm.7954

Rationale Potential post-mortem alteration to the oxygen isotope composition of biogenic silica is critical to the validity of palaeoclimate reconstructions based on oxygen isotope ratios (δ18O values) from sedimentary silica. We calculate the deg... Read More about Post-mortem oxygen isotope exchange within cultured diatom silica.

Seasonality of Holocene hydroclimate in the Eastern Mediterranean reconstructed using the oxygen isotope composition of carbonates and diatoms from Lake Nar, central Turkey (2017)
Journal Article
Dean, J. R., Jones, M. D., Leng, M. J., Metcalfe, S. E., Sloane, H. J., Eastwood, W. J., & Roberts, C. N. (2018). Seasonality of Holocene hydroclimate in the Eastern Mediterranean reconstructed using the oxygen isotope composition of carbonates and diatoms from Lake Nar, central Turkey. Holocene, 28(2), https://doi.org/10.1177/0959683617721326

A positive shift in the oxygen isotope composition (δ18O) of lake carbonates in the Eastern Mediterranean from the early to late Holocene is usually interpreted as a change to drier (reduced P/E) conditions. However, it has also been suggested that c... Read More about Seasonality of Holocene hydroclimate in the Eastern Mediterranean reconstructed using the oxygen isotope composition of carbonates and diatoms from Lake Nar, central Turkey.

Sedimentary context and palaeoecology of Gigantoproductus shell beds in the Mississippian Eyam Limestone Formation, Derbyshire carbonate platform, central England (2017)
Journal Article
Nolan, L., Angiolini, L., Jadoul, F., Della Porta, G., Davies, S., Banks, V., …Leng, M. J. (in press). Sedimentary context and palaeoecology of Gigantoproductus shell beds in the Mississippian Eyam Limestone Formation, Derbyshire carbonate platform, central England. Proceedings of the Yorkshire Geological Society, https://doi.org/10.1144/pygs2017-393

A sedimentological study was conducted at two localities exposing the Mississippian Eyam Limestone Formation of the Derbyshire carbonate platform, UK. Ricklow Quarry comprises seven facies with diverse skeletal assemblages, representing deposition on... Read More about Sedimentary context and palaeoecology of Gigantoproductus shell beds in the Mississippian Eyam Limestone Formation, Derbyshire carbonate platform, central England.

A late Quaternary record of seasonal sea surface temperatures off southern Africa (2017)
Journal Article
Loftus, E., Sealy, J., Leng, M. J., & Lee-Thorp, J. (2017). A late Quaternary record of seasonal sea surface temperatures off southern Africa. Quaternary Science Reviews, 171, https://doi.org/10.1016/j.quascirev.2017.07.003

The southern Cape coastal region is important for understanding both the behavioural history of modern humans, and regional and global climate dynamics, because it boasts a long archaeological record and occupies a key geographical location near the... Read More about A late Quaternary record of seasonal sea surface temperatures off southern Africa.

Timing recovery after the cretaceous/paleogene boundary: evidence from Brazos River, Texas (2017)
Journal Article
Leighton, A. D., Hart, M. B., Smart, C. W., Leng, M. J., & Hampton, M. (2017). Timing recovery after the cretaceous/paleogene boundary: evidence from Brazos River, Texas. Journal of Foraminiferal Research, 47(3), https://doi.org/10.2113/gsjfr.47.3.229

As part of an on-going re-assessment of the Cretaceous/ Paleogene boundary in the Brazos River area, Falls County, Texas, a number of new exposures have been described. One of these, at River Bank South, provides a near continuous record of the lower... Read More about Timing recovery after the cretaceous/paleogene boundary: evidence from Brazos River, Texas.

The prospectivity of a potential shale gas play: An example from the southern Pennine Basin (central England, UK) (2017)
Journal Article
Hennissen, J. A., Hough, E., Vane, C. H., Leng, M. J., Kemp, S. J., & Stephenson, M. H. (in press). The prospectivity of a potential shale gas play: An example from the southern Pennine Basin (central England, UK). Marine and Petroleum Geology, https://doi.org/10.1016/j.marpetgeo.2017.06.033

During the Serpukhovian (late Mississippian) Stage, the Pennine Basin, now underlying much of northern England, consisted of a series of interlinked sub-basins that developed in response to the crustal extension north of the Hercynic orogenic zone. F... Read More about The prospectivity of a potential shale gas play: An example from the southern Pennine Basin (central England, UK).

Temporal controls on silicic acid utilisation along the West Antarctic Peninsula (2017)
Journal Article
Swann, G. E., Pike, J., Leng, M. J., Sloane, H. J., & Snelling, A. M. (2017). Temporal controls on silicic acid utilisation along the West Antarctic Peninsula. Nature Communications, 14645, https://doi.org/10.1038/ncomms14645

The impact of climatic change along the Antarctica Peninsula has been widely debated in light of atmospheric/oceanic warming and increases in glacial melt over the past half century. Particular concern exists over the impact of these changes on marin... Read More about Temporal controls on silicic acid utilisation along the West Antarctic Peninsula.

Holocene carbon dynamics at the forest – steppe ecotone of southern Siberia (2016)
Journal Article
Mackay, A. W., Seddon, A., Leng, M. J., Heumann, G., Morley, D., Piotrowska, N., …Swann, G. E. (2017). Holocene carbon dynamics at the forest – steppe ecotone of southern Siberia. Global Change Biology, 23(5), https://doi.org/10.1111/gcb.13583

The forest–steppe ecotone in southern Siberia is highly sensitive to climate change; global warming is expected to push the ecotone northwards, at the same time resulting in degradation of the underlying permafrost. To gain a deeper understanding of... Read More about Holocene carbon dynamics at the forest – steppe ecotone of southern Siberia.

Astronomical constraints on the duration of the Early Jurassic Pliensbachian Stage and global climatic fluctuations (2016)
Journal Article
Ruhl, M., Hesselbo, S. P., Hinnov, L., Jenkyns, H. C., Xu, W., Riding, J. B., …Leng, M. J. (2016). Astronomical constraints on the duration of the Early Jurassic Pliensbachian Stage and global climatic fluctuations. Earth and Planetary Science Letters, 455, https://doi.org/10.1016/j.epsl.2016.08.038

The Early Jurassic was marked by multiple periods of major global climatic and palaeoceanographic change, biotic turnover and perturbed global geochemical cycles, commonly linked to large igneous province volcanism. This epoch was also characterised... Read More about Astronomical constraints on the duration of the Early Jurassic Pliensbachian Stage and global climatic fluctuations.

Osmium isotope evidence for two pulses of increased continental weathering linked to Early Jurassic volcanism and climate change (2016)
Journal Article
Percival, L. M., Cohen, A., Davies, M., Hesselbo, S. P., Jenkyns, H., Leng, M. J., …Xu, W. (2016). Osmium isotope evidence for two pulses of increased continental weathering linked to Early Jurassic volcanism and climate change. Geology, 44(9), 759-762. https://doi.org/10.1130/G37997.1

Large igneous provinces (LIPs) are proposed to have caused a number of episodes of abrupt environmental change by increasing atmospheric CO2 levels, which were subsequently alleviated by drawdown of CO2 via enhanced continental weathering and burial... Read More about Osmium isotope evidence for two pulses of increased continental weathering linked to Early Jurassic volcanism and climate change.

Scientific drilling projects in ancient lakes: integrating geological and biological histories (2016)
Journal Article
Wilke, T., Wagner, B., Van Bocxlaer, B., Albrecht, C., Ariztegui, D., Delicado, D., …Wonik, T. (in press). Scientific drilling projects in ancient lakes: integrating geological and biological histories. Global and Planetary Change, 143, https://doi.org/10.1016/j.gloplacha.2016.05.005

Sedimentary sequences in ancient or long-lived lakes can reach several thousands of meters in thickness and often provide an unrivalled perspective of the lake's regional climatic, environmental, and biological history. Over the last few years, deep... Read More about Scientific drilling projects in ancient lakes: integrating geological and biological histories.

Low-latitude Holocene hydroclimate derived from lake sediment flux and geochemistry (2016)
Journal Article
Parker, A. G., Preston, G. W., Parton, A., Walkington, H., Jardine, P. E., Leng, M. J., & Hodson, M. J. (2016). Low-latitude Holocene hydroclimate derived from lake sediment flux and geochemistry. Journal of Quaternary Science, 31(4), 286-299. https://doi.org/10.1002/jqs.2859

This study investigates hydrological responses to climatic shifts using sediment flux data derived from two dated palaeolake records in south-east Arabia. Flux values are generally low during the early Holocene humid period (EHHP) (∼9.0–6.4k cal a BP... Read More about Low-latitude Holocene hydroclimate derived from lake sediment flux and geochemistry.

A tale of two lakes: a multi-proxy comparison of Lateglacial and Holocene environmental change in Cappadocia, Turkey (2016)
Journal Article
Roberts, N., Allcock, S. L., Arnaud, F., Dean, J. R., Eastwood, W. J., Jones, M. D., …Yiğitbaşıoğlu, H. (2016). A tale of two lakes: a multi-proxy comparison of Lateglacial and Holocene environmental change in Cappadocia, Turkey. Journal of Quaternary Science, 31(4), https://doi.org/10.1002/jqs.2852

Individual palaeoenvironmental records represent a combination of regional-scale (e.g. climatic) and site-specific local factors. Here we compare multiple climate proxies from two nearby maar lake records, assuming that common signals are due to regi... Read More about A tale of two lakes: a multi-proxy comparison of Lateglacial and Holocene environmental change in Cappadocia, Turkey.

Interpretation and application of carbon isotope ratios in freshwater diatom silica (2016)
Journal Article
Webb, M., Barker, P. A., Wynn, P. M., Heiri, O., van Hardenbroek, M., Pick, F., …Leng, M. J. (2016). Interpretation and application of carbon isotope ratios in freshwater diatom silica. Journal of Quaternary Science, 31(4), https://doi.org/10.1002/jqs.2837

Carbon incorporated into diatom frustule walls is protected from degradation enabling analysis for carbon isotope composition (δ13Cdiatom). This presents potential for tracing carbon cycles via a single photosynthetic host with well-constrained ecoph... Read More about Interpretation and application of carbon isotope ratios in freshwater diatom silica.

North Atlantic forcing of moisture delivery to Europe throughout the Holocene (2016)
Journal Article
Smith, A. C., Wynn, P. M., Barker, P. A., Leng, M. J., Noble, S. R., & Tych, W. (2016). North Atlantic forcing of moisture delivery to Europe throughout the Holocene. Scientific Reports, 6, https://doi.org/10.1038/srep24745

Century-to-millennial scale fluctuations in precipitation and temperature are an established feature of European Holocene climates. Changes in moisture delivery are driven by complex interactions between ocean moisture sources and atmospheric circula... Read More about North Atlantic forcing of moisture delivery to Europe throughout the Holocene.

Carbon isotope discrimination in leaves of the common paperbark tree, Melaleuca quinquenervia, as a tool for quantifying past tropical and subtropical rainfall (2016)
Journal Article
Tibby, J., Barr, C., McInerney, F. A., Henderson, A. C., Leng, M. J., Greenway, M., …McNeil, V. (in press). Carbon isotope discrimination in leaves of the common paperbark tree, Melaleuca quinquenervia, as a tool for quantifying past tropical and subtropical rainfall. Global Change Biology, https://doi.org/10.1111/gcb.13277

Quantitative reconstructions of terrestrial climate are highly sought after but rare, particularly in Australia. Carbon isotope discrimination in plant leaves (Δleaf) is an established indicator of past hydroclimate because the fractionation of carbo... Read More about Carbon isotope discrimination in leaves of the common paperbark tree, Melaleuca quinquenervia, as a tool for quantifying past tropical and subtropical rainfall.