Outputs (233)

Variety and origin of magmas on Shatsky Rise, northwest Pacific Ocean (2012)
Journal Article
Sano, T., Shimizu, K., Ishikawa, A., Senda, R., Chang, Q., Kimura, J. I., Widdowson, M., & Sager, W. W. (2012). Variety and origin of magmas on Shatsky Rise, northwest Pacific Ocean. Geochemistry, geophysics, geosystems G³, 13(8), Article Q08010. https://doi.org/10.1029/2012GC004235

Shatsky Rise consists of thick (∼30km maximum) basaltic crust with various geochemical compositions. Geochemistry data indicate that four magma types exist on the plateau; namely normal, low-Ti, high-Nb, and U1349 types. The normal type is the most a... Read More about Variety and origin of magmas on Shatsky Rise, northwest Pacific Ocean.

Near-vent processes of the 273 ka Poris eruption (Tenerife) (2012)
Thesis
Smith, N. (2012). Near-vent processes of the 273 ka Poris eruption (Tenerife). (Thesis). https://hull-repository.worktribe.com/output/2598095

Near-vent processes during caldera-forming explosive eruptions are poorly known, as are relations between proximal and counterpart distal ignimbrites. Consequently, understanding of the full course of these eruptions and how to analyse their deposits... Read More about Near-vent processes of the 273 ka Poris eruption (Tenerife).

Response to Baksi, A., 2012, 'New 40Ar/ 39Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes' by Barry et al., 2010-Discussion' (2012)
Journal Article
Barry, T. L., Self, S., Kelley, S. P., Reidel, S., Hooper, P., & Widdowson, M. (2012). Response to Baksi, A., 2012, 'New 40Ar/ 39Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes' by Barry et al., 2010-Discussion'. Lithos, 146-147, 300-303. https://doi.org/10.1016/j.lithos.2012.04.011

Baksi (2012) claims that a number of radiometric ages presented in Barry et al. (2010) are statistically invalid and that many of the samples were altered, thus not able to date the eruptions, and that there is no compelling evidence for a limited du... Read More about Response to Baksi, A., 2012, 'New 40Ar/ 39Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes' by Barry et al., 2010-Discussion'.

Shear-derived mixing in dense granular flows (2011)
Journal Article
Rowley, P. J., Kokelaar, P., Menzies, M., & Waltham, D. (2011). Shear-derived mixing in dense granular flows. Journal of Sedimentary Research, 81(12), 874-884. https://doi.org/10.2110/jsr.2011.72

In flume experiments, granular avalanches run onto loose substrates develop 3-D architectures that record shear-derived mixing between the flow and the substrate. Spherical silica beads 0.250 mm diameter are run onto stratified substrates of various... Read More about Shear-derived mixing in dense granular flows.

Mica-controlled anisotropy within mid-to-upper crustal mylonites: an EBSD study of mica fabrics in the Alpine Fault Zone, New Zealand (2011)
Journal Article
Dempsey, E. D., Prior, D. J., Mariani, E., Toy, V. G., & Tatham, D. J. (2011). Mica-controlled anisotropy within mid-to-upper crustal mylonites: an EBSD study of mica fabrics in the Alpine Fault Zone, New Zealand. Geological Society Special Publications, 360(1), 33-47. https://doi.org/10.1144/SP360.3

The lattice preferred orientation (LPO) of both muscovite and biotite were measured by electron backscatter diffraction (EBSD) and these data, together with the LPOs of the other main constituent minerals, were used to produce models of the seismic v... Read More about Mica-controlled anisotropy within mid-to-upper crustal mylonites: an EBSD study of mica fabrics in the Alpine Fault Zone, New Zealand.

Climate model predictions for the latest Cretaceous: An evaluation using climatically sensitive sediments as proxy indicators (2011)
Journal Article
Craggs, H. J., Valdes, P. J., & Widdowson, M. (2012). Climate model predictions for the latest Cretaceous: An evaluation using climatically sensitive sediments as proxy indicators. Palaeogeography, palaeoclimatology, palaeoecology, 315-316, 12-23. https://doi.org/10.1016/j.palaeo.2011.11.004

To date, many general circulation model (GCM) experiments have failed to reproduce the warm, high latitude temperatures suggested for the Cretaceous by geological proxy climate indicators, especially for the Northern Hemisphere and within continental... Read More about Climate model predictions for the latest Cretaceous: An evaluation using climatically sensitive sediments as proxy indicators.

Qualitative and quantitative approaches in palaeohydrography: a case study from core-top parameters in the Gulf of Cadiz (2010)
Journal Article
Rogerson, M., Schönfeld, J., & Leng, M. J. (2011). Qualitative and quantitative approaches in palaeohydrography: a case study from core-top parameters in the Gulf of Cadiz. Marine Geology, 280(1-4), 150-167. https://doi.org/10.1016/j.margeo.2010.12.008

Palaeoceanography relies on the assumption that parameters measureable in sediment cores correlate reliably to hydrographic parameters. Areas of dynamic watermass mixing, which generally have steep hydrographic gradients, therefore provide both a tem... Read More about Qualitative and quantitative approaches in palaeohydrography: a case study from core-top parameters in the Gulf of Cadiz.

Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish (2010)
Journal Article
Dahl, T. W., Hammarlund, E. U., Anbar, A. D., Bond, D. P. G., Gill, B. C., Gordon, G. W., Knoll, A. H., Nielsen, A. T., Schovsbo, N. H., & Canfield, D. E. (2010). Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish. Proceedings of the National Academy of Sciences of the United States of America, 107(42), 17911-17915. https://doi.org/10.1073/pnas.1011287107

The evolution of Earth's biota is intimately linked to the oxygenation of the oceans and atmosphere. We use the isotopic composition and concentration of molybdenum (Mo) in sedimentary rocks to explore this relationship. Our results indicate two epis... Read More about Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish.

Tectonic setting and timing of the final Deccan flood basalt eruptions (2010)
Journal Article
Hooper, P., Widdowson, M., & Kelley, S. (2010). Tectonic setting and timing of the final Deccan flood basalt eruptions. Geology, 38(9), 839-842. https://doi.org/10.1130/G31072.1

The role of extensional tectonics in the generation of basaltic melt and eruption of continental flood basalts is controversial, and yet it remains crucial to understanding the origin and cause of these large-volume eruptions. Establishing the timing... Read More about Tectonic setting and timing of the final Deccan flood basalt eruptions.

The Middle Permian (Capitanian) mass extinction on land and in the oceans (2010)
Journal Article
Bond, D. P. G., Hilton, J., Wignall, P. B., Ali, J. R., Stevens, L. G., Sun, Y., & Lai, X. (2010). The Middle Permian (Capitanian) mass extinction on land and in the oceans. Earth-Science Reviews, 102(1-2), 100-116. https://doi.org/10.1016/j.earscirev.2010.07.004

A Middle Permian mass extinction, first discovered in 1994, has become known as the "end-Guadalupian event" in the literature. However, recent studies of foraminifera- and brachiopod-range truncations in conodont-dated sections on the South China Blo... Read More about The Middle Permian (Capitanian) mass extinction on land and in the oceans.