Glaciological Studies in the Vicinity of Syowa Station, Lützow-Holm Bay, East Antarctica

There is a marked ablation zone some 15 km wide along the periphery of the Soya Coast, Lützow-Holm Bay, and here the firn limit has a maximum height of about 600 m. A controlled analysis of the snow-firn stratigraphy on the marginal slope of the ice sheet at 700 m elevation was carried out on Nov. 3, 1966. The mean annual net accumulation for the period 1956-1965 was calculated as 7.1 ± 2.2 g/㎠. The incidence of a cyclic pattern of melt-features and icy layering formed during the Antarctic summer is helpful in distinguishing winter layers from summer layers. Examination of the snow-firn stratigraphy at another observation point, 930 m above sea level, shows few melt-features and an average annual net accumulation of 14.2±6.6 g/㎠ for the period 1963-1966. Also, a rather low value of maximum mean annual snow deposition in 1966 (several tens of centimeters of snow depth at the end of October) in the Ongul Strait, suggests low precipitation in the Syowa region

Rb-Sr Dating of the Gneissic Rocks from the East Coast of Lützow-Holm Bay, Antarctica

Rb-Sr age determinations have been carried out on rock samples collected in the area along the east coast of Lützow-Holm Bay, East Antarctica. Two different age groups of 458±10 my. and 1, 110 ± 100 my. have been obtained from the biotites and K-feldspars, respectively. The present Rb-Sr age of biotites is in close agreement with the determinations in previous works, indicating that the last metamorphic acitvity occurred in the early Paleozoic age. The age of 383 my. of the K-feldspar on the rock from the Yamato Mountains differs widely from those of other samples from the east coast of Lützow-Holm Bay

Preliminary Report on the Permo-Trias of Kashmir

A team of Japanese and Indian Geologists carried out detailed studies of the Permo-Triassic sections in the Srinagar region, Kashmir, during 1969. This report embodies certain conclusions arrived at in the light of these studies. The section at Guryul Ravine is described in detail, being the best in the Srinagar region. Lithological and faunistic comparisons with other areas examined are also referred to. The different faunistic zones of the Lower Trias of this area are compared with other important extra-Indian occurrences. The Zewan Series (Permian) at Guryul Ravine is succeeded by Lower Triassic beds. The arenaceous sediments pass into calcareous through argillaceous sediments. There is neither an intraformational nor interformational unconformity indicative of a hiatus in deposition. Many characteristic Permian elements survived in the lower part of the Lower Trias, constituting a zone of mixed fauna of Permo-Trias. This suggests a rapid faunal change from Permian to Lower Trias but not discontinuous. The lithology however supports a gradual change from Palaeozoic to Mesozoic. The advent of Lower Trias is marked by the appearance of characteristic species like Claraia stachei (BITTNER), SPATH in the dark shales. The paper also records a number of important Lower Triassic ammonoids (Otoceras, Glyptophiceras, etc.), which were so far not known from the Srinagar region. Considering the evolutionary position of some of the species of Otoceras, the boundary between the Permian and Trias is tentatively placed just below the advent of Claraia stachei