西イランの地学調査ノート
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During the field season of 1956-57 the Tokyo University Iraq-Iran Archaeological Expedition performed an excavation at a Neolithic site in Northern Iraq. Before the excavation I tried to get some knowledge of the physiography of Iran and also to collect as many fossils in Western Iran as possible.<BR>Physiographically, Iran may be divided into the following four zones : 1) the central plateau, 2) the coastal plain along the Caspian Sea, 3) the coastal plain along the Persian Gulf, and 4) the Khuzistan alluvial plain of Southwest Iran.<BR>Innumerable fossil remains, such as foraminifers, brachiopods, molluscs, and echinozoans, were collected from mudstone at an outcrop 7 km southwest of Qum and at a place 24 km southeast of Kashan. From their faunal assemblages, containing countless <I>Lepidocyclina</I>, the fossiliferous formation must be correlated with the Asmari, which is considered to be Aquitanian in age.<BR>The Maragheh region is one of the better known localities of Pontian <I>Hipparion</I> fauna and the fossil localities are scattered around the city of the same name. I visited one of them near the village of Karl Abad which is close to a ravine of Murdi Chai. In spite of only a few hours stay I fortunately managed to collect <I>Trilophodon pentelicus</I> (Gaudry and Lartet), <I>Hipparion gracile</I> Kaup, <I>Aceratherium</I> sp., <I>Tragocerus</I> sp., <I>Gazella</I> sp., and Chelonia gen. and sp. indet.from a nearly horizontal deposit of tuffaceous sandstone. Fossil remains of Maragheh must have been buried by volcanic ashes from the volcano Kuh-i-Sahand.<BR>The Hotu man was recently excavated from the cave-deposits near the southeastern corner of the Caspian Sea. It is supposed that the Hotu skeleton is intimately related to the human remains from Mt. Carmel in Israel and Teshik-Tash in Uzbekistan of USSR. Judging from recent radiocarbon dating, it becomes doubtful that the Hotu skeleton belongs to a Palaeoanthropic man.<BR>Siah Kuh mountain which is situated at the western extremities of a great desert, Dasht-i-Kavir, is very rich in invertebrate fossils, such as calcareous algae, foraminifers, bryozoans, brachiopods, molluscs, and echinozoans. From the occurrence of innumerable bryozoans in the limited horizon, these fossils may be collected from the Middle Fars and are considered to be Vindobonian in age.
- 社団法人 東京地学協会の論文
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