Tracing great fluid migrations
Article Abstract:
Metal sulphide ores from the Mississippi Valley were found to be about 377 million years old, indicating that the ores derived from the tectonic activity that was then raising up the Appalachian Mountains. The ore's relocation from the Appalachian region to the Mississippi Valley 700 kilometers away demonstrates that chemically altering fluids can move through enormous portions of the continental interior. J.C. Brannon and colleagues dated the ores using rubidium-strontium isotopes.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Tracing the Earth's evolution
Article Abstract:
Alard and colleagues have confirmed that many rocks in the Earth's mantle have differing nobel-metal abundance signatures to meteorites.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
Geochemical evidence for terrestrial ecosystems 2.6 billion years ago
Article Abstract:
Research is presented describing the study of terrestrial biomass age identification and the methods used for measuring element ratios.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Tunnelling secrets extracted. Experimental evidence for non-exponential decay in quantum tunnelling. Macroscopic quantum tunnelling of magnetization in a single crystal of nanomagnets
- Abstracts: Brimstone on Mars. Geochemical evidence for magmatic water within Mars from pyroxenes in the Shergotty meterorite
- Abstracts: Biological delineation of terrestrial buffer zones for pond-breeding salamanders. Effects of a biological control introduction on three nontarget native species of Saturniid moths
- Abstracts: Tracking the evolution of insecticide resistance in the mosquito Culex pipiens. Insecticides and mosquito-borne disease
- Abstracts: ATP-dependent inositide phosphorylation required for Ca(2+)-activated secretion