CONVENERS

Dr. Mária Hámor-Vidó
Deputy Head of Data Management Division
Eötvös Loránd Geophysical Institute of Hungary
1145 Budapest, Kolumbusz st. 17-23
Hungary

Prof. Wolfgang Kalkreuth
Laboratório de Análise de Carvão e Rochas Geradoras de Petróleo
Instituto de Geociências. Universidade Federal do Rio Grande do Sul (UFRGS)
Av. Bento Gonçalves, 9500. 91501-970 Porto Alegre, RS, Brazil

Aim

The WG was created to provide a reference text for the petrographic analysis of dispersed organic matter including identification of components and thermal maturity. It was proposed in 1995 and has been inactive for a number of years. As a consequence the objectives have changed over the years

Initially it was conceived as an Atlas. But the first contributions were mainly text and we realised that it was too much text for an Atlas. We also realised that the text was addressing very important items in the world of DOM analysis and therefore it could be appropriated to maintain the explanations.

These two types of projects should follow different developments

• The Atlas is under production in the classification of DOM WG
• An ICCP Publication is expected to be the product of this WG. Maria H?mor-Vid? was appointed last year to revitalise this project (She has received from the former convener the material available and will contact the contributors for future developments)

Preview of White Paper content

ICCP-Publication
(September 2006 Fifth Version)
with contributions by
 
Borrego, A G.¹., Kalkreuth, W²., Pickel, W.³, Reinhardt, M.⁴, Suarez-Ruiz, I¹.

1 Instituto Nacional  del Carbon, CSIC, Oviedo, Spain
2 Instituto de Geociencias, UFRGS,  Porto Alegre, Brazil
3 Walter Pickel.  Coal & Organic Petrology Services Pty Ltd, NSW, Australia
4 *Martin Reinhardt. Reinhardt Geological Consulting International, Hannover, Germany

    *deceased

1. Introduction / Preface (The Conveners)

2. Historical development of DOM classification and current state of the art

3. Sample Types, sampling procedures and sample preparation

3.1 Sample types
3.2 Surface sampling
3.3 Subsurface sampling
3.4 Preparation of samples for microscopical analysis
3.4.1 Sample preparation for incident light microscopy
3.4.2 Sample preparation for transmitted light microscopy
3.4.3 Embedding, grinding and polishing

4. Occurrence and identification of DOM in sedimentary rocks
4.1 Organic matter in reflected light mode
4.1.1 Huminite/vitrinite macerals
4.1.2 Inertinite macerals
4.1.3 Liptinite macerals
4.1.4 Zooclasts
4.1.5 Secondary Products (migrabitumen, oil)
4.1.6 Reworked organic material including coal
4.2 Organic matter in transmitted light mode

5. Quantitative analyses to determine the petrographic composition of DOM

6. Optical methods to evaluate thermal maturity of DOM
6.1Vitrinite reflectance measurement
6.1.1Problems and limitations of vitrinite reflectance measurement
6.2 Graptolithe reflectance (not done as yet)
6.3 Reflectance of solid bitumen (migrabitumen), not done as yet
6.4 Fluorescence properties of the organic constituents
6.4.1 Introduction
6.4.2 Procedure
6.4.3 Fluorescence determinations
6.5.Colour changes of organic matter in microfossils
6.5.1 Thermal Alteration Index (TAI) and Spore Colour Index (SCI)
6.5.2 Conodont Colour Index (CCI)
6.5.3 Foraminifera Colour Index (FCI), not done as yet

7.  References

8. Selected Bibliography (Info on published papers with photos of DOM, including type of DOM, maturity, geological age, colour, b&w, etc).-needs update and compilation (W.D. Kalkreuth)