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Victoria University Antarctic Research Expedition Science and Logistics Reports 2005-06: VUWAE 50

b. Objectives

b. Objectives

Lower Victoria Valley (14 – 21 Nov)

  1. Sample ice in modern glacial and lake environments at snout of Lower Victoria Glacier. Sample buried ice and ice cemented sediment down valley (stream) from Lower Victoria Glacier.
  2. Sample several soil profiles for atmospheric Be-10 on top of buried ice, down valley from Lower Vic Glacier.
  3. Sample inflationary sand soils on the interfluves of lateral melt water channels. These sands will be dated by OSL to get an accumulation rate and approximate age of interfluve surface.
  4. Collecting samples of granite plutons for Pb-Pb isotopic fingerprinting. This information will be used to identify sources of granitic clasts in glacial tills.

Wright Valley – Meserve Glacier (21 – 25 Nov)

  1. Sample several soil profiles, which are associated with the Hart Ash, for Atm Be-10. The Hart Ash has a K-Ar date of 3.9Ma and this will allow an independent test of the Be-10 method of dating.
  2. Observe Miocene-Pliocene sediments at Prospect Mesa to understand the context of the Hart Ash.

Beacon Valley (25 Nov – 3 Dec)

1)Sample several soil profiles for Atm Be-10 to understand relative rates of processes which occur in on top of the buried ice to.
2)Collection and mapping of granite clasts in till deposits in and around Beacon Valley. These data will be used to fingerprint the granites to help understand their source in the tills.

Kennar Valley (3 – 8 Dec)

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1)Collection of granite clasts from the Metschel Tillite. These samples will be ananlyed for Pb-Pb isotopic fingerprinting to understand their source and determine if they could contribute to tills in Beacon Valley.
2)Reconnaissance of buried ice in the valley. If ice is present, then to understand its context with buried ice in Beacon Valley.