Cavernous Weathering in the Taylor Dry Valley, Victoria Land, Antarctica
TAYLOR VALLEY (77° 33′ S., 163° 25′ E.) is part of a deglaciated valley complex called the McMurdo Oasis, which is located about 80 km to the west of Ross Island across McMurdo Sound. Since the IGY many New Zealand and American geological parties have worked in this area1–3, which is easily accessible by helicopter from Scott Base and McMurdo Station at the southern end of Ross Island. Now that the topographical and geological reconnaissance stage has been completed and adequate maps cover the 2,500 km2 of the McMurdo Oasis, more attention is being devoted to the study of various anomalies and problems.
Geological investigations in southern Victoria Land, Antarctica
Abstract The Beacon Group has not been adequately defined. Proposed standard sections of divisions of the Group are described from Mount Bastion and the Fortresses in the Victoria Valley region. There the Beacon Group is 4,500 ft thick and is divided into the basal Webb Sandstone, the Fortress Sandstone, and the Mount Bastion Coal Measures. The Mount Bastion Coal Measures are dated by plant microfossils as midPermian, and contain thin seams of anthracite with 30% ash. Details of supplementary sections in the same area are given in an appendix.
New Approaches for Positron Emission Tomography ( PET ) in Breast Carcinoma
Positron Emission Tomography (PET) is a nuclear medicine imaging technique which allows the quantitative evaluation of the distribution of several pharmaceuticals in a target area. PET therefore provides valuable information on the biochemical and biological activity inside a living subject in a noninvasive way, combining techniques applied in nuclear medicine with the precise localization achieved by computerized image reconstruction.