花粉分柝と新生代層(2) : 讃岐財田及び高知市万々附近の新生代層について

概要

論文の詳細を見る
1. The northern side of the Awa-Sanuki range is occupied widely by a cenozoic formation which has been presumed to belong to the Pleistocene. This formation consists of sandstone, conglomerate and silt with plant remaines. Pollen samples were obtained from Kitano in Saida-mura and Kubo in Shitika-mura, Kagawa Prefecture. It is found as the result of pollen analysis of this formation that conifers such as Abies, Tsuga, Pseudotsnga, Pinus and Taxodiaceae preponderated throughout, but some warmth loving trees such as Liquidambar are seen in small amount. 2. The results of pollen analysis of the cenozoic formation at Mama, suburbs of Kochi city (including the result in previous paper) are more or less similar to that of Kitano ; taxodiaceous trees preponderated throughout, the other conifers were relatively abundant and Liquidambar also is seen. 3. From these facts it may be inferred that the floral composition shown in both formations is similar to that of the present community at the height of about 1000m in Shikoku, and the presence of Liquidambar which is distributed to the sub-tropical area at present leads to the conclusion that both formations were deposited at the height of about 1000m above the sea level and that the pollen of Liquidambar were carried in from lower altitudes by the wind. Both formations may be correlated to the upper Pliocene.
日本生態学会の論文
1954-06-30