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The age of formation of the Lapstone Monocline has been long considered to be late Pliocene/early Pleistocene (the Kosciusko Uplift) but it is now generally thought to be much older. Palaeomagnetic data from haematite‐rich beds within the Hawkesbury Sandstone on and about the monocline indicate that it formed before the oldest haematite was introduced to these beds. The age of this oldest haematite is 15 ± 7 Ma. On the basis of these data, the age of the monocline is unlikely to be less than 8 Ma, probably exceeds 15 Ma, and could be older than 22 Ma.  相似文献   

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《地质学报》1944,(Z2):283-303
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《地质学报》1942,(Z2):323-330
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《地质学报》1948,(Z2):313-324
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The paper presents a biography of S.N. Nikitin, one of the outstanding Russian geologists of the late 19th and early 20th centuries, and provides a review of his contribution to study of the Mesozoic of Central Russia.  相似文献   

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《地质学报》1943,(Z2):216-223
正 A Agraulos zone, 40. Aikuan group, 111. Amphoton typica zone, 40. Amplexograptus confertus, 41; (?). c. zone, 43. Anatina sp., 126. Annularia (?) paradoxa Sze, 67. Anodo(?)tophora münste(?)i (Wissmann), 127; A. m. var. khonvenensis Patte, 127; A. sp., 59, 127.  相似文献   

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18O values can provide significant δ15N and δ information to understand variation of nitrate sources of groundwater. Groundwater samples were collected during summer and winter in the karstic city, 18O-NO3-·δ15N-NO3- at Guiyang, southwest China and an…  相似文献   

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In this study we analyze the importance of new magnetostratigraphic data on the Nordvik section for solving the problem of detailed Tethyan–Boreal correlation around the Jurassic–Cretaceous boundary with a special emphasis on the aspects of interpretation of the paleomagnetic data in magnetostratigraphic studies and the need for the integrated (paleontological and paleomagnetic) approach to recognition of the base of the Berriasian.  相似文献   

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Journal of China University of Geosciences (ISSN 1002-0705 CN42-1279/P) is a geological magazine published quarterly in English by this university. The journal is designed for the dissemination of information on all branches of geology and associated technology in the exploration and utilization of earth resources. Articles from both domestic and international scien-  相似文献   

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~~Guidance for Contributors to the Journal  相似文献   

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