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THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR

HU Gang WANG Nai-ang

HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. 中国地理科学, 2001, 11(1): 80-86.
引用本文: HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. 中国地理科学, 2001, 11(1): 80-86.
HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. Chinese Geographical Science, 2001, 11(1): 80-86.
Citation: HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. Chinese Geographical Science, 2001, 11(1): 80-86.

THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR

基金项目: Under the auspices of National Natural Science Foundation of China(No.49731010)and Chinese National KeyProject for Basic Research(G1999043501).
详细信息
    作者简介:

    HU Gang(1976- ), male, a native of Binzhou, Shandong Province, master.His research interests include paleolake, paleoenvironment and regional geography.

  • 中图分类号: P343

THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR

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出版历程
  • 收稿日期:  2000-07-03
  • 刊出日期:  2001-03-20

THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR

    基金项目:  Under the auspices of National Natural Science Foundation of China(No.49731010)and Chinese National KeyProject for Basic Research(G1999043501).
    作者简介:

    HU Gang(1976- ), male, a native of Binzhou, Shandong Province, master.His research interests include paleolake, paleoenvironment and regional geography.

  • 中图分类号: P343

摘要: The sand wedges in Hexi Corridor occur in the alluvial gravel stratum of bajada and high terraces. The 14C ages of eolian sand in sand wedges prove that they formed during the Last Ice Age, with the mean annual air temperature about- 5.6℃. The common 14C and AMS 14C dating ages of terrestrial branch relicts in Huahai clay-mirabilite interlayer are (11600± 280) a B. P. and (1118±54) a B. P. respectively, proving that the drirabilite formed at the cold episode of the Last Glacial Maximum(LGM) and Younger Dryers (YD) in Huahai Lake. It is pointed out that the mean annual air temperature in Hexi Corridor during LGM was about - 3℃ - - 7℃, 11℃-15℃ lower than that of present, and that during YD was about 0℃-2℃, 6℃-8℃ lower than at present. This decreasing temperature values are generally coincident with those inferred by pollen, sand wedge and ice core in the northern China, and also with the research on temperature-falling amplitude of middle and high latitude on the Northern Hemisphere recently.

English Abstract

HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. 中国地理科学, 2001, 11(1): 80-86.
引用本文: HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. 中国地理科学, 2001, 11(1): 80-86.
HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. Chinese Geographical Science, 2001, 11(1): 80-86.
Citation: HU Gang, WANG Nai-ang. THE SAND WEDGE AND MIRABILITE OF THE LAST ICE AGE AND THEIR PALEOCLIMATIC SIGNIFICANCE IN HEXI CORRIDOR[J]. Chinese Geographical Science, 2001, 11(1): 80-86.

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