Wednesday, March 31, 2010

Editing using Photoshop

Here is a coarse crystalline dolostone that was taken in the field at the Westphalia outcrop. If you want to get an idea where it is in the outcrop, it is found approximately between 13 and 15 meters on the stratigraphic column that I posted previously.

Here is the photoshoped version of that dolostone to show the vuggy and fenestral porosity

Strat Column from Illustrator

Here is the stratigraphic column of the Westphalia outcrop that me & Dr. Parcell measured in Missouri. It contains the Roubidoux, Gasconade, and Jefferson City/Cotter Dolomite formation of the Arbuckle Group in the Early Ordovician Period.

It contains mostly fine to coarse crystalline cherty dolomite with some sandstone beds. There are some stromatolites and thrombolites(???) in a few of these beds.

I have not made the legend as yet, but I will be put it up later. There is 50+m of thickness so it looks a little blurry.

Wednesday, March 3, 2010

Cores du microbes

I am on a GeoMapApp mission to find microbial traces in the sea floor sediment cores available in this database. If not in this database, then I will try looking in other databases as well.
Initially I will just be looking for traces to see if there is even any data available in this area.
If I find anything, I would like to figure out their ages which hopefully the cores will contain. Then try to infer depositional environments using other data available in the cores and finally have a comparison to the Ordovician microbialites that I am researching on.
If such data is quite recent, then I can use it as an analogue for comparison.

So far data that I have found in some of the cores contain mottling but there is no indication of bacterial or algae activity; so far no evidence of microbial laminations either. I will continue to explore the database and if nothing turns up I will have to look for another project.

So if anyone has any food for thought about this project, let me know.

Monday, March 1, 2010