Objective
The methodology involved in fixing and sample preparation from the deep sea environment has been perfected.
The interpretation of fossil structures found was aided by observation of the microbial-particle interactions.
Microbes from deep sea South Atlantic sediments were found to be rarely preserved.
During this work, methodology has been perfected for fixing and sample preparation of mixed organic particulate sediments for scanning and transmission electron microscope studies.
Observation of microbial particle (mineral or biosiliceous) interactions in experiments using coastal sediments has greatly aided the interpretation of the fossil structures found in the ancient South Atlantic diatom oozes. Ubiquitous active microbial particle interaction was found in the sense that microbially produced exopolymeric material (EPM) covers almost all surfaces and that particles are bound within the EPM, as well as by fibrils emanating from the bacteria.
The study of deep sea South Atlantic sediments demonstrated that microbes are rarely preserved in this environment. Possibly the blobby flakes and smooth cement, common in most types of sediment, are vestiges of an organic conditioning film. Silicified bacteria, and their associated EPM were found only in the almost purely diatomaceous layers of a single location. The organic material seems to have been passively impregnated with silica. It is proposed that the unusual 3.5 Myear long M Miocene hiatus contributed to this silicification.
It is concluded that diagenesis is not a purely physicochemical process and that silica diagenesis can be bacterially mediated.
Bacterial influence on the alteration and neoformation of silicates in a volcanic sediment could not be determined although it is implied.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences earth and related environmental sciences geology sedimentology
- natural sciences biological sciences microbiology bacteriology
- natural sciences earth and related environmental sciences physical geography coastal geography
- natural sciences physical sciences optics microscopy
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
44035 NANTES
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.