2010-2011

Expedition 330 Louisville Seamount Trail

December 2010 – February 2011

In December 2010, an international team of scientists set sail on the scientific drilling vessel JOIDES Resolution for an eight-week IODP expedition to the Louisville Seamount chain.

The expedition set out to examine the:

  • possible motion of the Louisville hotspot and its geodynamical implications
  • eruptive cycle and geochemical evolution of the seamount trail

Two scientists from the University of Leicester sailed on Expedition 330, Dr Rebecca Williams (Petrologist) and Dr Louise Anderson (Logging Staff Scientist). Over the course of 8 weeks the expedition drilled 1114 m of sediment and igneous basement across eight holes at six sites located on five different seamounts. In total 806 metres of core was recovered, corresponding to 72% recovery. Two holes were logged during the Expedition, U1374A and U1376A. U1374A was logged with the Triple-combo (Density - Neutron Porosity – Resistivity & Gamma Ray sondes), Formation MicroScanner-Sonic string, Goettingen Borehole Magnetometer (GBM) and Ultrasonic Borehole Imager (UBI). U1376A was logged with all the previously listed tools excluding the UBI.

Rebecca Williams and Louise Anderson
Rebecca Williams and Louise Anderson discussing the core

Excellent downhole data were acquired including borehole imagery, which will aid in the calculation of the number of massive igneous units drilled and fill in gaps where no core was recovered.

 

Publications

As Logging Staff Scientist, Louise Anderson is a co-author on the following expedition-related publications:

Preliminary Report

  • Expedition 330 Scientists, 2011. Louisville Seamount Trail: implications for geodynamic mantle flow models and the geochemical evolution of primary hotspots. IODP Prel. Rept., 330. doi:10.2204/iodp.pr.330.2011

Expedition Proceedings

  • Koppers, A.A.P., Yamazaki, T., Geldmacher, J., and the Expedition 330 Scientists, 2012. Proc. IODP, 330: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.330.2012

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Expedition 325 Great Barrier Reef Environmental Changes

January – March 2010

The GBREC expedition is designed to establish the course and effects of the last glaciation in reef settings that developed in tectonically inactive areas located far from glaciated regions. Expedition 325 proposes to core at several osshore sites along transects on the Great Barrier Reef. Key objectives are  to reconstruct the deglaciation curve for the period 20Kyrs-10Kyrs before present in order to establish the minimum sea level during the Last Glacial Maximum (LGM) and to assess the validity, timing and validity of meltwater pulses which are thought to have disturbed the general thermohaline oceanic circulation and hence global climate.

Sally and Louise preparing logging. Exp325 D_Smith@ECORD_IODP
Sally Morgan and Louise Anderson preparing downhole logging tools for use on IODP Expedition 325. Source: D_Smith@ECORD_IODP
The expedition also aims to establish the sea-surface temperature variation which accompanied the transgression. These data will enable the impact of sea-level rise on reef growth, geometry and biological makeup to be assessed. The patterns of short term palaeoclimatic changes are thought to punctuate the transitional period between present-day climatic conditions following the LGM.

 

Publications

  • Yokoyama Y., Webster J.M., Cotterill C., Braga J.C., Jovane L., Mills H., Morgan S., Suzuki A. and the IODP Expedition 325 Scientists. 2011. IODP Expedition 325: Great Barrier Reefs Reveals Past Sea-Level, Climate and Environmental Changes Since the Last Ice Age. Scientific Drilling, No. 12, September 2011, 32-145. doi:10.2204/iodp.sd.12.04.2011.
  • Harper, B.B., Puga-Bernabéu, Á., Droxler, A.W., Webster, J.M., Gischler, E., Tiwari, M., Lado-Insua, T., Thomas, A.L., Morgan, S. & Jovane, L. 2015. Mixed Carbonate–Siliciclastic Sedimentation Along the Great Barrier Reef Upper Slope: A Challenge To the Reciprocal Sedimentation Model. Journal of Sedimentary Research, 85, 1019-1036.
  • Hinestrosa, G., Webster, J.M., Beaman, R.J. & Anderson, L.M. 2014. Seismic stratigraphy and development of the shelf-edge reefs of the Great Barrier Reef, Australia. Marine Geology, 353, 1-20, doi: 10.1016/j.margeo.2014.03.016.


As Petrophysics Staff Scientist, Louise Anderson is a co-author on the following expedition-related publications:

Preliminary Report

  • Expedition 325 Scientists, 2010. Great Barrier Reef environmental changes: the last deglacial sea level rise in the South Pacific: offshore drilling northeast Australia. IODP Prel. Rept., 325. doi:10.2204/iodp.pr.325.2010

Scientific Drilling Journal

  • Yokohama, Y., Webster, J.M., Cotterill, C., Braga, J.C., Jovane, L., Mills, H., Morgan, S., Suzuki, A., and the IODP Expedition 325 Scientists, 2011. IODP Expedition 325: the Great Barrier Reef reveals past sea-level, climate, and environmental changes since the last Ice Age. Sci. Drill., 12:32–45. doi:10.2204/iodp.sd.12.04.2011

Expedition Proceedings

  • Webster, J.M., Yokoyama, Y., Cotterill, C., and the Expedition 325 Scientists, 2011. Proc. IODP, 325: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.325.2011

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Expedition 318 Wilkes Land Glacial History

January 2010 - March 2010

Wilkes Map
Fig 1: Location map Expedition 318 ©IODP/USIO

From January to March 2010, the JOIDES Resolution sailed on a two months expedition to Wilkes Land, Antarctica. The aim of the expedition was to explore the history of Antarctic climate over the past 35 million years.

The main objectives were:

  • To obtain the timing and nature of the first arrival of ice at the Wilkes Land margin inferred to have occurred during the earliest Oligocene (reflecting Oligocene isotope Event 1).
  • To obtain the nature and age of the changes in the geometry of the progradational wedge interpreted to correspond with large fluctuations in the extent of the East Antarctic Ice Sheet and possibly coinciding with the transition from a wet-based to a cold-based glacial regime.
  • To obtain a high-resolution record of Antarctic climate variability during the late Neogene and Quaternary, and
  • To obtain an unprecedented ultrahigh resolution (i.e., annual to decadal) Holocene record of climate variability.

Fig 2: Logging Tools covered in snow ©Annick Fehr
Fig 2: Logging Tools covered in snow ©Annick Fehr

Over the duration of the expedition, 2000 m of high-quality middle Eocene–Holocene sediments were drilled at seven sites on the Wilkes Land shelf at water depths ranging between 400 m and 4000 m. The cores represent ~53 m.y. of Antarctic history. Two of the seven sites drilled during IODP Expedition 318 were logged (Holes U1359D and U1361A) with the Triple-combo toolstring, comprising resistivity, density, porosity and natural gamma radiation tools, and the FMS-Sonic toolstring, comprising the FMS micro-resistivity imager, sonic and natural gamma radiation tools. The VSI tool string (geophone and natural gamma radiation tools) was deployed in Hole U1359D only. Of the other five sites, two had to be abandoned before logging due to storms and high seas (Hole U1356A and Hole U1357C), and three did not penetrate deep enough to be logged.

Fig3: Coastline of Antarctica ©Annick Fehr
Fig 3: Coastline of Antarctica ©Annick Fehr

 

Publications

  • Patterson, M.O., McKay, R., Naish, T., Escutia, C., Jimenez-Espejo, F.J., Raymo, M.E., Meyers, S.R., Tauxe, L., Brinkhuis, H. & Scientists, I.E., (Fehr, A). 2014. Orbital forcing of the East Antarctic ice sheet during the Pliocene and Early Pleistocene. Nature Geosci, 7, 841-847, doi: 10.1038/ngeo2273
  • Verma, K., Bhattacharya, S., Biswas, P., Shrivastava, P.K., Pandey, M. & Pant, N.C., et al. (Fehr, A). 2014. Clay mineralogy of the ocean sediments from the Wilkes Land margin, east Antarctica: implications on the paleoclimate, provenance and sediment dispersal pattern. International Journal of Earth Sciences, 103, 2315-2326, doi: 10.1007/s00531-014-1043-4.
  • Orejola, N. & Passchier, S., et al. (Fehr, A). 2014. Sedimentology of lower Pliocene to Upper Pleistocene diamictons from IODP Site U1358, Wilkes Land margin, and implications for East Antarctic Ice Sheet dynamics. Antarctic Science, 26, 183-192, doi: 10.1017/S0954102013000527.

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