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| PubMed | |
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Article by Wang, R. 1 |
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Article by Chen, J. B. 1 |
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Article by Diao, L. S. 1 |
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Article by Chen, Y. L. 1 |
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Article by Tang, G. Q. 2 |
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Article by Li, X. H. 2 |
�������������ʯ����ͬλ����Ϣ�ܹ��ؽ��ź�ˮ�¶ȣ�����������ʯ�������������ز�ѧ�ϵ��о����������ݽ��;�����ȷ�ĹŻ������塣����ʯС�ĸ���һֱ���侫ȷ����ѧ�������������ء���Ϊ������ʯ��ԭλ��ͬλ�ز��Է�����̽���о�����������Cameca IMS--1280 �Ͷ������������Ƕ�����ʯ��������ԭλ��ͬλ����ɲ��ԣ�ͨ�������õ��ɿ��Ĺű�㺣ˮ�¶� ( SST) ��¼�������������������������SST �������Ե��������̡���ȳ���Ag3PO4 ʵ�鷽��������ʯ��ԭλ��ͬλ�ط����������ӿ��٣������ܹ���Ч��������ʯ���ܵ���Ⱦ�IJ�λ����ø�Ϊ�ɿ�������ʯ��ͬλ����ɵIJⶨ�����
Oxygen isotope composition of biogenic apatite��especially of the conodonts��is potentially useful in the reconstruction of contemporaneous surface seawater temperature ( SST) �� Combined with abundant researches on their biostratigraphy��the geochemical analysis of conodonts is more significant for indicating paleoenvironmental changes�� However��the small size of conodont is always a factor limited for accurate analysis�� In this work��the authors test the in situ oxygen isotope of conodont using Cameca IMS-1280 secondary ion mass spectrometry ( SIMS) for the first time and acquire reliable records on contemporaneous SST�� The results show that SST raised rapidly from Late Permian to Early Triassic�� Compared with the Ag3PO4method for popular use��this analysis is faster in carrying out with high resolution and high spatial resolution��and avoiding the contaminated position so as to acquire easily the reliable original oxygen isotopic compositions��