琵琶湖的特性和钻孔资料的贵重 琵琶湖位于日本列岛的地峡部位。若峡湾和伊势湾深深地楔入本州岛中央之处,在地球上以特别古老为其最大的特色。近年来近畿地区第四纪研究的显著进展,进一步查明了琵琶湖的古老,湖西的古琵琶湖层表层所含的剑齿象化石就是其中的一个例证。 The characteristics of Lake Biwa and the valuable drilling information Biwako is located in the isthmus of the Japanese archipelago. If the fjords and Ise Bay are deeply wedged into the center of Honshu Island, they are particularly ancient on Earth with their greatest features. In recent years, the remarkable progress of quaternary research in Kinki area has further identified the ancient Biwako Lake, an example of which is the fossil stele that is contained in the surface of the ancient Biwako layer in the lake.