All Outputs (141)

Holocene atmospheric circulation in the central North Pacific: a new terrestrial diatom and δ18O dataset from the Aleutian Islands (2018)
Journal Article
Bailey, H. L., Kaufman, D. S., Sloane, H. J., Hubbard, A. L., Henderson, A. C., Leng, M. J., …Welker, J. M. (2018). Holocene atmospheric circulation in the central North Pacific: a new terrestrial diatom and δ18O dataset from the Aleutian Islands. Quaternary Science Reviews, 194, 27-38. https://doi.org/10.1016/j.quascirev.2018.06.027

The North Pacific is a zone of cyclogenesis that modulates synoptic-scale atmospheric circulation, yet there is a paucity of instrumental and paleoclimate data to fully constrain its long-term state and variability. We present the first Holocene oxyg... Read More about Holocene atmospheric circulation in the central North Pacific: a new terrestrial diatom and δ18O dataset from the Aleutian Islands.

Late Pleistocene-Holocene coastal adaptation in central Mediterranean: Snapshots from Grotta d’Oriente (NW Sicily) (2018)
Journal Article
Colonese, A., Lo Vetro, D., Landini, W., Di Giuseppe, Z., Hausmann, N., Demarchi, B., …Martini, F. (in press). Late Pleistocene-Holocene coastal adaptation in central Mediterranean: Snapshots from Grotta d’Oriente (NW Sicily). Quaternary International, https://doi.org/10.1016/j.quaint.2018.06.018

Marine faunal remains from Grotta d’Oriente (Favignana Island, NW Sicily) offer invaluable snapshots of human-coastal environment interaction in the central Mediterranean from the Late Pleistocene to the Middle Holocene. The long-term shellfish and f... Read More about Late Pleistocene-Holocene coastal adaptation in central Mediterranean: Snapshots from Grotta d’Oriente (NW Sicily).

Spatiotemporal Variability of Barium in Arctic Sea-Ice and Seawater (2018)
Journal Article
Hendry, K. R., Pyle, K. M., Butler, G. B., Cooper, A., Fransson, A., Chierici, M., …Dodd, P. A. (2018). Spatiotemporal Variability of Barium in Arctic Sea-Ice and Seawater. Journal of Geophysical Research: Oceans, 123(5), 3507-3522. https://doi.org/10.1029/2017jc013668

Freshwater export from the Arctic is critical in determining the density of water at sites of North Atlantic deep water formation, which in turn influences the global flux of oceanic heat and nutrients. We need geochemical tracers and high-resolution... Read More about Spatiotemporal Variability of Barium in Arctic Sea-Ice and Seawater.

An early Cambrian greenhouse climate (2018)
Journal Article
Hearing, T. W., Harvey, T. H., Williams, M., Leng, M. J., Lamb, A. L., Wilby, P. R., …Donnadieu, Y. (2018). An early Cambrian greenhouse climate. Science Advances, 4(5), Article eaar5690. https://doi.org/10.1126/sciadv.aar5690

The oceans of the early Cambrian (~541 to 509 million years ago) were the setting for a marked diversification of animal life. However, sea temperatures — a key component of the early Cambrian marine environment — remain unconstrained, in part becaus... Read More about An early Cambrian greenhouse climate.

Lake Baikal isotope records of Holocene Central Asian precipitation (2018)
Journal Article
Swann, G. E., Mackay, A. W., Vologina, E., Jones, M. D., Panizzo, V., Leng, M. J., …Sturm, M. (2018). Lake Baikal isotope records of Holocene Central Asian precipitation. Quaternary Science Reviews, 189, https://doi.org/10.1016/j.quascirev.2018.04.013

Climate models currently provide conflicting predictions of future climate change across Central Asia. With concern over the potential for a change in water availability to impact communities and ecosystems across the region, an understanding of hist... Read More about Lake Baikal isotope records of Holocene Central Asian precipitation.

Effects of cleaning methods upon preservation of stable isotopes and trace elements in shells of Cyprideis torosa (Crustacea, Ostracoda): implications for palaeoenvironmental reconstruction (2018)
Journal Article
Roberts, L., Holmes, J., Leng, M. J., Sloane, H., & Horne, D. (2018). Effects of cleaning methods upon preservation of stable isotopes and trace elements in shells of Cyprideis torosa (Crustacea, Ostracoda): implications for palaeoenvironmental reconstruction. Quaternary Science Reviews, 189, https://doi.org/10.1016/j.quascirev.2018.03.030

The trace element (Sr/Ca and Mg/Ca) and stable isotope (δ¹⁸O and δ¹³C) geochemistry of fossil ostracod valves provide valuable information, particularly in lacustrine settings, on palaeo-water composition and palaeotemperature. The removal of sedimen... Read More about Effects of cleaning methods upon preservation of stable isotopes and trace elements in shells of Cyprideis torosa (Crustacea, Ostracoda): implications for palaeoenvironmental reconstruction.

Groundwater quality beneath an Asian megacity on a delta: Kolkata’s (Calcutta’s) disappearing arsenic and present manganese (2018)
Journal Article
McArthur, J., Sikdar, P., Leng, M., Ghosal, U., & Sen, I. (in press). Groundwater quality beneath an Asian megacity on a delta: Kolkata’s (Calcutta’s) disappearing arsenic and present manganese. Environmental Science and Technology, 52(9), https://doi.org/10.1021/acs.est.7b04996

Kolkata, the capital city of West Bengal, exploits groundwater for public water-supply. The groundwater has been reported to be widely polluted by arsenic (As). Analysis for As in 280 groundwaters from across Kolkata, failed to detect As concentratio... Read More about Groundwater quality beneath an Asian megacity on a delta: Kolkata’s (Calcutta’s) disappearing arsenic and present manganese.

Assessing human impact on Rostherne Mere, UK, using the geochemistry of organic matter (2018)
Journal Article
Lacey, J. H., Leng, M. J., Vane, C. H., Radbourne, A. D., Yang, H., & Ryves, D. B. (in press). Assessing human impact on Rostherne Mere, UK, using the geochemistry of organic matter. Anthropocene, 21, https://doi.org/10.1016/j.ancene.2018.02.002

This study investigates recent changes in the geochemistry of organic material from a hypereutrophic lake (Rostherne Mere, United Kingdom) using the geochemical and molecular composition of radiometrically dated sediment cores. Modern samples suggest... Read More about Assessing human impact on Rostherne Mere, UK, using the geochemistry of organic matter.

Historical atmospheric pollution trends in Southeast Asia inferred from lake sediment records (2018)
Journal Article
Leng, M., Engels, S., Fong, L., Chen, Q., Leng, M. J., McGowan, S., …Yang, H. (2018). Historical atmospheric pollution trends in Southeast Asia inferred from lake sediment records. Environmental Pollution, 235, 907-917. https://doi.org/10.1016/j.envpol.2018.01.007

Fossil fuel combustion leads to increased levels of air pollution, which negatively affects human health as well as the environment. Documented data for Southeast Asia (SEA) show a strong increase in fossil fuel consumption since 1980, but informatio... Read More about Historical atmospheric pollution trends in Southeast Asia inferred from lake sediment records.

Oxygen isotope analysis of the eyes of pelagic trilobites: Testing the application of sea temperature proxies for the Ordovician (2018)
Journal Article
Bennett, C. E., Williams, M., Leng, M. J., Lee, M. R., Bonifacie, M., Calmels, D., …Vandenbroucke, T. R. (2018). Oxygen isotope analysis of the eyes of pelagic trilobites: Testing the application of sea temperature proxies for the Ordovician. Gondwana Research, 57, https://doi.org/10.1016/j.gr.2018.01.006

The oxygen isotope composition of well-preserved trilobite eye calcite, retaining its original optical properties, represents a possible source of information on Paleozoic sea temperatures. Species of the epipelagic telephinid genera Carolinites and... Read More about Oxygen isotope analysis of the eyes of pelagic trilobites: Testing the application of sea temperature proxies for the Ordovician.

A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements (2018)
Journal Article
Sutton, J. N., André, L., Cardinal, D., Conley, D. J., de Souza, G. F., Dean, J. R., …Swann, G. E. (2018). A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements. Frontiers in Earth Science, 5, Article 112. https://doi.org/10.3389/feart.2017.00112

Silicon (Si) is the second most abundant element in the Earth’s crust and is an important nutrient in the ocean. The global Si cycle plays a critical role in regulating primary productivity and carbon cycling on the continents and in the oceans. Deve... Read More about A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements.

Vertical distribution and diurnal migration of atlantid heteropods (2018)
Journal Article
Wall-Palmer, D., Metcalfe, B., Leng, M. J., Sloane, H. J., Ganssen, G., Vinayachandran, P., & Smart, C. W. (2018). Vertical distribution and diurnal migration of atlantid heteropods. Marine Ecology Progress Series, 587,

Understanding the vertical distribution and migratory behaviour of shelled holoplanktonic gastropods is essential in determining the environmental conditions to which they are exposed. This is increasingly important in understanding the effects of oc... Read More about Vertical distribution and diurnal migration of atlantid heteropods.

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).

"Live” (stained) benthic foraminiferal living depths, stable isotopes, and taxonomy offshore South Georgia, Southern Ocean: implications for calcification depths (2018)
Journal Article
Dejardin, R., Kender, S., Allen, C. S., Leng, M. J., Swann, G. E., & Peck, V. L. (2018). "Live” (stained) benthic foraminiferal living depths, stable isotopes, and taxonomy offshore South Georgia, Southern Ocean: implications for calcification depths. Journal of Micropalaeontology, 37(1), 25-71. https://doi.org/10.5194/jm-37-25-2018

It is widely held that benthic foraminifera exhibit species-specific calcification depth preferences, with their tests recording sediment pore water chemistry at that depth (i.e. stable isotope and trace metal compositions). This assumed depth habita... Read More about "Live” (stained) benthic foraminiferal living depths, stable isotopes, and taxonomy offshore South Georgia, Southern Ocean: implications for calcification depths.

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 (?18O) 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.