Neutron and photon activation analyses in geochemical characterization of sediment profiles at the Jurassic-Cretaceous boundary

被引：6

作者：

Mizera, J. ^{[1
]}

Randa, Z. ^{[1
]}

机构：

[1] Acad Sci Czech Republic, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2009年 / 282卷 / 01期

关键词：

Jurassic-Cretaceous boundary; Brodno section; Neutron activation analysis; Photon activation analysis; INAA; IPAA; METEORITES; ANTIMONY; IMPACTS; ROCKS;

D O I：

10.1007/s10967-009-0187-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

As a part of a project aimed at precise correlation of the Jurassic-Cretaceous (J/K) boundary interval in the Tethyan and Boreal realms, neutron and photon activation analyses were employed in geochemical characterization of limestone samples from the Brodno section, Slovakia, which offers a record of hemipelagic marine sediments around the J/K boundary in the Tethyan realm. Nickel and antimony anomalies exceeding almost twenty times the levels in neighboring beds were found near the beds assigned recently to the J/K boundary. Elucidation of their origin (volcanism, isochronous meteoritic impact, concentrating in, e.g., sulfides) requires further investigation.

引用

页码：53 / 57

页数：5

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