Forschungs- & Entwicklungsinformationsdienst der Gemeinschaft - CORDIS

Methods for studying sedimentary structures and stratigraphy of sediments containing gas hydrate

In this result, we will address the aspects of the use of the sedimentary structures and stratigraphy for detection of sediments containing gas hydrate:
- Detection of mud breccia layers and their vertical distribution.
- Detection of physical boundaries and types (transitional or sharp).
- Detection of vertical grain size trending.
- Detection of clasts of the mud breccia, their vertical distribution, and their quantification.
- Detection of biogenic structures
- SEM analysis.

The innovative aspects of this result is mainly related to definition of those useful qualitative parameters related to lithostratigraphy and elemental analysis of sedimentary structures in sediments recovered from mud volcanoes. This result can be used to determine the presence of individual mud flow events, frequency of mud flow events, and the type of activity (dormant, presently active, exhumated) of the mud volcano.

The knowledge of sediments containing gas hydrate from mud volcanoes has improved after the set of measured parameters. In particular it may provide useful information for layers containing gas hydrate, and make important observations regarding grain fabric and texture. This result has been has been compared with those stratigraphic results obtained from those cores recovered in the Gulf of Cadiz, validating its potential use for other similar areas.

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Research department
Instituto Ciencas del Mar, paseo Maritimo de la Barceloneta 37-49
08003 Barcelona
Spain
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