Work

Direct Rhenium-Osmium age of the Oxfordian-Kimmeridgian boundary, Staffin bay, Isle of Skye, U.K., and the Late Jurassic time scale

Year: 2007

Type: article

Abstract: Ar39 Ar age for the basal Berriasian suggest that the duration of the Kimmeridgian and Tithonian were nominally ~650 k.y. shorter than previously determined. The Re-Os data for the Staffin black shale indicates that the seawater Os isotope composition at the Oxfordian/Kimmeridgian boundary was radiogenic ( 187 Os/ 188 Os = 0.53), similar to that for the Early Tithonian, but much higher than the Late Callovian ( 187 Os/ 188 Os = 0.27). These Os isotope compositions suggest that the rate of continental weathering had increased from the Callovian to Kimmeridgian/Tithonian.

Source: Durham Research Online (Durham University)

Author: David Selby

Institution: Durham University

Language: English

Topic: Paleontology and Stratigraphy of Fossils

Subfield: Paleontology

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2102474137

FWCI: 2.733

Cites: 41

Cited by: 65

Related to: 10