地貌学与第四纪研究的新手段——陆地宇生核素研究

doi:10.13249/j.cnki.sgs.2002.05.587

地理科学 ›› 2002, Vol. 22 ›› Issue (5): 587-591.doi: 10.13249/j.cnki.sgs.2002.05.587

地貌学与第四纪研究的新手段——陆地宇生核素研究

徐孝彬¹, 王建¹, Françoise Yiou², Grant Raisbeck²

1. 南京师范大学地理科学学院江苏南京 210097;
2. Centre de Spectrométrie Nucléaireet de Spectrométrie de Masse, IN2P3-CNRS, Batiment 108 91405 Orsay campus, France

收稿日期:2001-11-27 修回日期:2001-05-30 出版日期:2002-09-20 发布日期:2002-09-20
基金资助:
教育部“教育振兴计划”青年教师奖励基金项目(2001DLXSBJBC12)资助;江苏教育学院科学研究“十五”规划项目资助。

New Means in the Study of Geomorphology and Quaternary——Research of Terrestrial Cosmogenic Isotopes

XU Xiao-bin¹, WANG Jian¹, Françoise Yiou², Grant Raisbeck²

1. Geographical Science College, Nanjing Normal University, Nanjing, Jiangsu 210097;
2. Centre de Spectrom閠rie Nucl閍ire et de Spectrom閠rie de Masse, IN2P3-CNRS, Batiment 108, 91405 Orsay campus, France

Received:2001-11-27 Revised:2001-05-30 Online:2002-09-20 Published:2002-09-20

摘要/Abstract

摘要： 暴露岩石表层中的宇生核素的浓度,是产生速率、衰变常数及侵蚀速率的函数。根据该原理,在宇生核素形成速率为已知的条件下,建立宇生核素浓度与时间及侵蚀速率的函数关系,根据该模式可对岩面的暴露时间及侵蚀速率进行计算,这使得该测年技术在地貌学与第四纪研究中有着极大的运用前景。在众多的宇生核素中,取自于石英的²⁶Al和¹⁰Be是目前该领域中运用最广泛、最成熟的宇生核素。

Abstract: Because of cosmogenic isotopes production, the concentration of cosmogenic isotope in surface layer of the exposed rocks accumulates more and more, and at same time, it becomes less and less with isotope’s radiation and surface’s erosion. With this principle, under the condition of cosmogenic isotopes production rate being well known, the function between the concentrations of cosmogenic isotopes and time and erosion can be calculated. Using this model, we can calculate the exposed ages and erosion rate of the surface. This makes the dating technique be very useful and have a good provision in the study of Geomorphology and Quaternary. In cosmogenic isotopes, ²⁶Al and ¹⁰Be deriving from quartz are used most widely and maturely in this field.

中图分类号:

P539.7

徐孝彬, 王建, Françoise Yiou, Grant Raisbeck. 地貌学与第四纪研究的新手段——陆地宇生核素研究[J]. 地理科学, 2002, 22(5): 587-591.

XU Xiao-bin, WANG Jian, Françoise Yiou, Grant Raisbeck. New Means in the Study of Geomorphology and Quaternary——Research of Terrestrial Cosmogenic Isotopes[J]. SCIENTIA GEOGRAPHICA SINICA, 2002, 22(5): 587-591.

参考文献

[1] Simpson J A, Fagot W C. Properties of the low energy nucleonic component at large atmospheric depth[J]. Phys. Rev. 1953,90:1068-1072.
[2] Lal D, Peters B. Cosmic ray produced radioactivity on the earth [J]. In handbuch der physiked. S. Flugge. 1967, 4(2): 167-181.
[3] Erik T, Thomas W, Philippe J, et al. Determination of cosmogenic productionrates of ¹⁰Be, ³He and ³B in water[J]. Nuclear Instruments and Methods in Physics Research, 2000,B172:873-883.
[4] Nishiizi K, Lal D, et al. Production of ¹⁰Be and ²⁶Al by cosmic rays in terrestrial quartz in situ and implications for erosion rates [J]. Nature, 1986, 319: 134-136.
[5] Edouard B, Grant M, Francoise Y, et al. Solar modulation of cosmogenic nuclide production over the last millennium: comparison between ¹⁴C and ¹⁰Be records[J]. Earth and Planetary Science Letters, 1997, 150: 453-462.
[6] Francoise Yiou, Karl Diel, et al. Preparation of microgram quantities of carrier-free iodine for AMS analysis[J]. Nuclear Instruments and Methods in Physics Research, 2000, B 172:395-398.
[7] Edward J Brook, Erik T Brown, Mark D Kurz, et al. Constraints on age, erosion, and uplift of Neogene glacial deposits in the Transantarctic Mountains determined from in situ cosmogenic ¹⁰Be and ²⁶Al[J]. Geology, 1995, 23(12): 1063-1066.
[8] Paul R, Kimberly A. Carrie Patterson, et al. Mid-Pleistocene cosmogenic minimum-age limits for pre-Wiscinsinan glacial surfaces in southwestern Minnesota and southern Baffin Island: a multiple nuclide approach[J]. Geomorphology, 1999, 27: 25-39.
[9] Gregory S, Robert S, Oliver A. Dating fluvial terraces with ¹⁰Be and ²⁶Al profiles: application to the Wind River, Wyoming [J]. Geomorphology, 1999, 27:41-60.
[10] Darryl E, Clifford S, James W, et al. Modulation of erosion on steep granitic slopes by boulder armoring, as revealed by cosmogenic ¹⁰Be and ²⁶Al[J]. Earth and Planetary Science Letters. 2001, 186: 269-281.
[11] 王建,徐孝彬.地面测年技术--字生同位素测年[J].地球科学进展.2000,15(2):237～240.
[12] G M Raisbeck, F Yiou. Production of long-lived cosmogenic nuclei and their applications [J]. Nuclear Instruments and Methods in Physics Research, 1984, B 5:91-99.
[13] Reedy, R C, J R Arnold, K. Lal. Cosmic-ray record in solar system matter[J]. Annual Review of Nuclear and Particle Science, 1983, 33: 505-537.
[14] Shea M A, D F Smart, et al. Estimating cosmic ray vertical cut-off rigidities as a function of the Mcllwain L-Parameter for different epochs of the geomagnetic field [J]. Physics of the Earth and Planetary Interiors, 1987, 48: 200-205.
[15] Tibor J Dunai. Scaling factors for production rates of in situ produced cosmogenic nuclides: a critical reevaluation[J]. Earth and Planetary Science Letters, 2000, 176: 157-169.
[16] Erik T Brown, John M Edmond, et al. Examination of surface exposure ages of Antarctic moraines using in situ produced ¹⁰Be and ²⁶Al[J]. Geochimica et Cosmochimica Acta 1991, 55:2269-2283.
[17] D Lal. Cosmic ray labeling of erosion surfaces: in situ nuclide production rates and erosion models[J]. Earth and Planetary Science letters, 1991, 104: 424-439.
[18] Jone O, Stone. Air pressure and cosmogenic isotope production [J]. Journal of Geophysical Research, 2000, 105(B10): 23,753-23, 759.
[19] Paul R Bierman, Kimberly A Marsella, et al. Mid-Pleistocene cosmogenic minimum-age limits for pre-Wisconsinsn glacial surfaces in southwestern Minnesota and southern Baffin Island: a multiple nuclide approach[J]. Geomorphology, 1999, 27:25-39.

地貌学与第四纪研究的新手段——陆地宇生核素研究

New Means in the Study of Geomorphology and Quaternary——Research of Terrestrial Cosmogenic Isotopes

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