ANNUAL GROWTH BANDING IN A CAVE STALAGMITE

被引：212

作者：

BAKER, A ^{[1
]}

SMART, PL ^{[1
]}

EDWARDS, RL ^{[1
]}

RICHARDS, DA ^{[1
]}

机构：

[1] UNIV MINNESOTA, DEPT GEOL & GEOPHYS, MINNESOTA ISOTOPE LAB, MINNEAPOLIS, MN 55455 USA

来源：

NATURE | 1993年 / 364卷 / 6437期

关键词：

D O I：

10.1038/364518a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

THE presence of microscopic luminescence banding in cave calcite deposits (speleothems) has recently been reported1-3. The luminescence seems to be caused by excitation of humic and fulvic acids derived from the overlying soil and subsequently incorporated into the calcite3,4. We have tested whether such luminescence corresponds to annual growth layers, using high-precision thermal-ionization mass-spectrometric U-238-U-234-U-Th-230 ages from banded sections of a Holocene stalagmite. We report here that the timespans yielded by counting bands, on the assumption that they are annual, agree within error limits with those obtained by our uranium-thorium dating. This demonstration that the banding is annual should make banded speleothems valuable resources for providing high-resolution records of past climate (in which precipitation can be estimated from growth rates5,6 and temperatures from stable-isotope measurements7) and solar-terrestrial correlations (as the luminescence intensity can be related to the solar sunspot cycle1-3).

引用

页码：518 / 520

页数：3

共 19 条

[11] HALF-LIFE OF TH-230
MEADOWS, JW
ARMANI, RJ
CALLIS, EL
ESSLING, AM
[J]. PHYSICAL REVIEW C, 1980, 22 (02): : 750 - 754
[12] ORR PC, 1952, SANTA BARBARA MUSEUM, V1
[13] ABSOLUTE AGE-DETERMINATION OF ARCHAEOLOGICAL SITES BY URANIUM SERIES DATING OF TRAVERTINES
SCHWARCZ, HP
[J]. ARCHAEOMETRY, 1980, 22 (FEB) : 3 - 24
[14] SCHWARCZ HP, 1986, HDB ENV ISOTOPE GEOC, V2, P271
[15] SHOPOV Y, 1990, DOKL BOLG AKAD NAUK, V43, P9
[16] SHOPOV Y, 1989, P INT C SPELEOL HUNG, V10, P95
[17] SHOPOV Y, 1991, P INT C ENV CHANGES, P17
[18] Simmons I.G., 1981, ENV BRIT PREHISTORY, P82
[19] WHITE WB, 1989, P INT C SPELEOL, V10, P212

← 1 2 →