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Slope deposits in the Snowy Mountains of south-eastern Australia have a wide distribution above 1000 m elevation on slopes between approximately 5° and 25° which are well stabilized by the existing forest vegetation. The present environment is not severe enough to initiate slope instability. 相似文献
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Carbon isotopic study of Lakes Qarhan and frome sediments 总被引：1，自引：1，他引：0
Qaidam Basin is located in the west of China (Fig. 1), it is surrounded by Kunlun Mountains, Altun Mountains and Qilian Mountains. The mountainous plateau is usually of 4000 to 5000 m above sea level, and a few of mountain ranges are more than 5000 m in altitude. Along the southern margin of the basin lie the Kunlun Mountains in the Hercynian folded zone; in the west of the basin are Altun Mountains in the Caledonain folded zone; and the 相似文献
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A prograding chenier plain on the west side of Broad Sound is up to 5 km wide and individual beach ridges (cheniers) are up to 5 km long. The cheniers are believed to have formed during periods of low sediment supply, leading to the erosion of mangrove deposits and the attendant development of a beach ridge. Radiocarbon dating of two sequences, revealed that cheniers formed at about 5000, 4500, 3550, 2500, 1600 and 700 years B.P. There is no significant change in the elevation of the cheniers during this 5000 year interval and it would seem from the Broad Sound evidence that sea level stabilized at about the present level approximately 5000 years B.P. Since that time mean sea level has varied by no more than ± 1 m. 相似文献
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