MGPalaeo can provide palynological, sedimentological, and geochemical analyses on a range of different mining samples, which can lead to key insights regarding:
• Age control (i.e., are your lignite samples Miocene or Late Cretaceous in age?)
• Well/seam correlations
• Stratigraphic development
• Sequence stratigraphic models
• Stratigraphically constrained depositional models (i.e., detailed sedimentological core logging integrated with palynological interpretations)
• Basic depositional interpretations (i.e., marine or non-marine)
• Palaeoenvironmental interpretations (i.e., nature of the vegetation that influenced the composition of the peats)
• Provenance studies
• Sediment source
• Mineral dispersal patterns
Palynological analyses can also aid with archaeological studies (i.e., the source of coals from old campfires, or tracing the onset of mining in an area).
What Can Be Sampled For Palynology?
Palynomorphs (spores, pollen, dinocysts, etc) are microscopic and settle more readily in low energy environments. As such, it is always best to target dark-coloured mudstones or siltstones first for palynology.
But don’t let sandstones discourage you; unless the sands are very clean, you should still have good microfossil recovery. In some cases, palynological results from sandy lithologies are even better than the encompassing mudstones. A general rule of thumb is that as grain size increases, the volume of material collected for sampling should likewise increase.
Lignite, peat, and coals can also be worth sampling, too. When it comes to dating coals or even coal seam correlations, it is the lithology directly above or below a coal that is generally sampled, while the coal itself is avoided. But we often find that a good suite of palynomorphs can be extracted directly from coals, thereby allowing far more accurate age determinations and correlations.
MGPalaeo offers a comprehensive range of sedimentological services, leading to a better
understanding of stratigraphic development and depositional models. Our services include:
• Core description as a stand-alone feature at various scales (can be done on-site)
• Wireline log interpretation over uncored intervals
• High resolution image log interpretations
• Rock typing of cutting samples providing lithology, grain size and permeability estimates
• Reporting including core description and a sedimentological overview integrated with depositional models. Optional integration of:
– Routine Core Analysis (RCA)
– Surrounding wells
– Image logs
• Core workshops (on request)
Our geological and stratigraphical consultants can work with you, at your office or ours, to help develop/refine your project in the best way possible. Please contact us to discuss your requirements or ideas.