Publication:
Silica phase-transformations during diagenesis within petrified woods found in fluvial deposits from Thailand-Myanmar

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Issued Date

2013

Resource Type

Article

File Type

application/pdf

ISSN

370738

DOI

10.1016/j.sedgeo.2013.02.014

Other identifier(s)

2-s2.0-84876850126

Rights Holder(s)

Scopus

Bibliographic Citation

Sedimentary Geology. Vol 290, No. (2013), p.15-26

Suggested Citation

Saminpanya S., Sutherland F.L. Silica phase-transformations during diagenesis within petrified woods found in fluvial deposits from Thailand-Myanmar. Sedimentary Geology. Vol 290, No. (2013), p.15-26. doi:10.1016/j.sedgeo.2013.02.014 Retrieved from: https://hdl.handle.net/20.500.14740/6656

Title

Silica phase-transformations during diagenesis within petrified woods found in fluvial deposits from Thailand-Myanmar

Author(s)

Saminpanya S.
 Sutherland F.L.

Abstract

Transitions in petrified wood samples from several Thailand-Myanmar sites included opal-A to opal-CT, opal-A to metastable β-crystobalite and reordered opal-CT. →. quartz. The moganite in the samples indicates a potential volcanic silica source for the wood petrifactions. Silica phase transitions evident under SEM include opal-A. →. opal-CT, opal-A. →. cuboid quartz (pseudocubic) and opal-CT. →. quartz. Certain stages of silica transformation and transition processes seem to overlap. Such overlapping results when lepisphere blades transform to the high crystallinity of prismatic quartz through a solid-state mechanism. The results provide some insights into the petrified wood genesis in the region. Thermal inputs into the silicification process may have pre-dated final burial of woods in flood deposits. © 2013 Elsevier B.V.

Subject(s)

Lepisphere
 Moganite
 Opal-CT
 Silicified wood
 Thailand
 Deposits
 Quartz
 Sedimentology
 Wood
 Crystallinity
 Diagenesis
 Fluvial deposit
 Opal
 Phase transition
 Silica
 Silicification
 Wood
 Burma
 Deposits
 Phase Transition
 Quartz
 Sediments
 Silica
 Thailand
 Wood
 Myanmar
 Thailand

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URI

https://hdl.handle.net/20.500.14740/6656

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Scopus: Year 1983-2021

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