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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Possibility of chemical weathering before the advent of vascular land plants

Article Abstract:

Carbon dioxide (CO2) levels in the aerated earth zone (the vadose zone) above the water table are sufficient to account for constant chemical weathering since the mid-Proterozoic era. This is contrary to the common belief that soil CO2 replaced atmospheric CO2 as the chief cause of chemical weathering, and eliminates the requirement for high atmospheric CO2 levels. Low levels of microbial respiration suffice to maintain adequate CO2 levels.

Author: Keller, C.K., Wood, B.D.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
Environmental aspects, Carbon dioxide, Microbial respiration, Soil chemistry, Chemical weathering

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Natural examples of olivine lattice preffered orientation patterns with a flow-normal a-axis maximum

Article Abstract:

A 'B-type' olivine preferred orientation with the a-axis maximum perpendicular to the flow direction is explained. A widespread B-type olivine preferred orientation patterns from a subduction-type metamorphic belt in southwest Japan indicate that these patterns develop in the presence of water.

Author: Tomoyuki Mizukami, Wallis, Simon R., Junji Yamamoto
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
Japan, Science & research, Silicate minerals

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Production of iron nanoparticles by laser irradiation in a simulation of lunar-like space weathering

Article Abstract:

Olivine samples were subjected to pulse laser irradiation and studied using transmission electron microscopy, to determine amorphous vapor-deposited rims.

Author: Sasaki, Sho, Nakamura, Keiko, Hamabe, Yoshimi, Kurahashi, Erika, Hiroi, Takahiro
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001

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Subjects list: Research, Olivine
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