[meteorite-list] OT: bacteria & ferromanganese nodules
From: Robert Verish <bolidechaser_at_meteoritecentral.com>
Date: Thu Apr 22 10:32:50 2004
On Page 188 in: SCIENCE IN CHINA (Series D) Vol. 43
Moreover, a combined theory called biology-chemistry
mechanism has been put forward.
Therefore, to find microbe bodies acting as
constructors of the ferromanganese nodules is the key
work to prove the microbe origin theory. For the
reasons above, a high-precision fluoroscope study was
systematically conducted on the ferromanganese nodules
collected from the East Pacific Ocean in 1997, as well
as EPMA research. The result of the study is that a
lot of microbe bodies were discovered in these
ferromanganese nodules and microbic fluorescent
microstructures can be seen in them. The work shows
that the living activities of microbes are closely
related to the origin of the ferromanganese nodules.
1 Samples and study methods --
1.1 Samples -
The studied ferromanganese nodules were collected from
the East Pacific deep sea floor by a scientific
investigation ship of the State Oceanic Administration
in late 1997. Two types of samples were selected from
two sites. No. 161 is an irregular cauliflorate
ferromanganese nodule with a rough surface and a
growing root, collected from the muddy sediments at
the depth of 4,862 m,
11 45.3 N, 139 31.86 W.
The other, No.23562, is a potato-shaped one with a
relatively smooth surface, collected at the
depth of 5,107 m,
10 07.50 N, 154 07.50 W.
1.2 Sample treating -
Since the nodules have high porosity and a high water
content, before slicing, the samples must be
consolidated by a special reagent to fill in the pore
space. According to the analytic requirements of the
fluorescence microscope and EPMA, the glue 502 was
selected as the reagent because it is less fluorescing
and high temperature-resistant. After being
onsolidated the samples are sliced along both the
perpendicular and parallel directions of growing.
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Received on Tue 16 Mar 2004 02:37:20 AM PST