Oxygen isotope analyses of co-existing carbonate and phosphate in biogenic apatite: A way to monitor diagenetic alteration of bone phosphate?

被引：379

作者：

Iacumin, P ^{[1
]}

Bocherens, H ^{[1
]}

Mariotti, A ^{[1
]}

Longinelli, A ^{[1
]}

机构：

[1] UNIV TRIESTE,DIPARTIMENTO SCI TERRA,I-34100 TRIESTE,ITALY

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1996年 / 142卷 / 1-2期

关键词：

O-18/O-16; apatite; carbonates; bones; teeth; diagenesis;

D O I：

10.1016/0012-821X(96)00093-3

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The oxygen isotopic composition of phosphate (delta(18)Op) and structural carbonate (delta(18)OC) Of hydroxylapatite was determined in 31 bone and tooth samples of modem mammals from different countries, These two variables are highly correlated (r(2) = 0.98) and the calculated best fit of linear regression is very similar to the equation calculated from the phosphate and carbonate palaeotemperature equations [1,2]. According to previous measurements [3-6] on fossils of different ages from different areas it seems quite improbable to find isotopically altered skeletal remains showing a good correlation between delta(18)Op and delta(18)Oc, as is the case with modem samples. It therefore seems possible, at least in some cases, to use these measurements for monitoring fossil bone and tooth diagenetic alteration. When a set of points lie on the equilibrium line or close to it, the delta(18)O values could be considered close to the original values. In contrast, when the points lie to the left or to the right of this line this probably means that the values are diagenetically modified, due to interaction with meteoric water or O-18-enriched water, respectively.

引用

页码：1 / 6

页数：6

共 35 条

[1]

[Anonymous], 1987, South African Journal of Science

[2] THE PRESERVATION OF GLACIAL-INTERGLACIAL CLIMATIC SIGNATURES IN THE OXYGEN ISOTOPES OF ELEPHANT SKELETAL PHOSPHATE [J].