Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: In situ ore formation experiment: Amino acids and amino sugars trapped
  in artificial chimneys on deep-sea hydrothermal systems at Suiyo Seamount,
  Izu-Bonin Arc, Pacific Ocean   The present study reports on the bio-organic composition of a deep-sea
venting hydrothermal system originating from arc volcanism; the origin of the
particulates in hydrothermal fluids from the Suiyo Seamount in the southern
Izu-Bonin (Ogasawara) Arc is discussed with regard to amino compounds. Chimney
samples on deep-sea hydrothermal systems and core samples at Suiyo Seamount
were determined for amino acids, and occasionally amino sugars. Two types of
chimney samples were obtained from active hydrothermal systems by submersible
vehicles: one was natural chimney (NC) on a hydrothermal natural vent; the
other was artificial chimneys (AC), mainly formed by the growth and deposition
of sulfide-rich particulate components in a Kuwabara-type in situ incubator (KI
incubator). Total hydrolyzed amino acids (THAA) and hydrolyzed hexosamines (HA)
in AC ranged from 10.7 nmol/g to 64.0 nmol/g and from 0 nmol/g to 8.1 nmol/g,
respectively, while THAA in hydrothermally altered core samples ranged from
26.0 nmol/g to 107.4 nmol/g-rock. The THAA was thus of the same order of
magnitude in AC and core samples. The representative biochemical indicator
ratios of {\beta}-alanine/aspartic acid and {\gamma}-aminobutyric acid/glutamic
acid were low. This is consistent with a large microbial population and labile
subterranean biogenic organic compounds. A micro energy dispersive X-ray
spectrometer ({\mu}EDX) was used to show that the formation of massive pyrite-
and chalcopyrite-ores, the major matrixes of the natural chimney structures,
were processed during hydrothermal activity. These data suggest that labile
particulate organic matter (POM) and/or dissolved organic matter (DOM) from
hydrothermal fluid were continuously trapped to form concentrated organic
matter in a sulfide-rich matrix.

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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
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The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
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The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th