Silicoflagellates like these are also abundant
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Search found 17 matches
- Wed Nov 03, 2021 5:34 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
- Tue Nov 02, 2021 4:14 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
The selected Jerez deposits are composed of almost 100% remains of diatoms, radiolaria, foraminifera, silicoflagellates and coccolithophores. It has so little consistency that it easily slides in water, separating its components. The faded material can be filtered with different meshes to select the...
- Fri Oct 29, 2021 5:00 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
Tanks a lot [ https://live.staticflickr.com/65535/51587575373_8181137a61_b.jpg detail of the interior of a hemidiscus valve The remains of spicules are very abundant https://live.staticflickr.com/65535/51587588903_d44975d4b9_b.jpg https://live.staticflickr.com/65535/51587370296_0f0606b399_b.jpg http...
- Mon Oct 25, 2021 12:26 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
An abundant species is the Hemidiscus cuneiforme
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Salud!!
- Fri Oct 22, 2021 11:14 am
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
In some places the abundance of diatom remains is extreme, as can be seen in the image with many large Coscinodiscus that can be seen even with the naked eye. https://live.staticflickr.com/65535/51611681683_c0681b0943_b.jpg https://live.staticflickr.com/65535/51611457901_c64e46688f_b.jpg https://liv...
- Wed Oct 20, 2021 7:40 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
Thanks for your comments. Continuing with the study of the Jerez fossil deposit, I show some images of coccoliths of the genus Calcididiscus (I think). In the first image you can see the abundance of coccoliths. The presence of cococliths indicates that the waters that flooded these areas were marin...
- Wed Oct 20, 2021 12:50 pm
- Forum: Articles and images to be published
- Topic: Nomenclature of Diatoms.
- Replies: 7
- Views: 13896
Re: Nomenclature of Diatoms.
thanks
- Wed Oct 20, 2021 8:13 am
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
It's true, the complexity of a diatom is incredible. In this image you can see a break in a frustula showing its internal structure
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Salud!!
- Tue Oct 19, 2021 3:07 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
They are not very abundant but with patience you can find these orthosiras
- Tue Oct 19, 2021 8:36 am
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
In the "moronites" of Jerez, the number of species is very large, although some species are difficult to find, which is not the case with these Triceratium. Although I have doubts as to whether they are Triceratium or Pseudotriceratium. https://live.staticflickr.com/65535/51587588483_655de3f13c_c.jp...
- Mon Oct 18, 2021 8:27 am
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Re: Fossil diatom deposit in Jerez. Moronitas
To prepare the samples, the material is slipped into water and sieved to discard the broken diatoms. Some of the selected material is placed in a sample holder and by sputering it is covered with a layer of about 10 nm of gold. I have tried to use ionic liquids instead of sputtering, but the result ...
- Sat Oct 16, 2021 4:47 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom deposit in Jerez. Moronitas
- Replies: 30
- Views: 7615
Fossil diatom deposit in Jerez. Moronitas
Fossil diatom deposit in Jerez. A good part of the surface of the Guadalquivir valley in Spain and especially the area of the famous sherry wines is made up of fossil remains of diatoms, radiolarians, foraminifera, spicules, etc ... The whitish soils are popularly known as Moronite and in some cas...
- Thu Oct 07, 2021 2:19 pm
- Forum: Pictures and Videos
- Topic: Geodian cydonium spicule
- Replies: 3
- Views: 1297
Geodian cydonium spicule
Immature spicula of Geodian cydonium. Sample collected on the beach of Llanes (Spain) in August 2021. Picture taken with a Philips XL30 scanning electron microscope.
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Salud!!
- Fri Oct 01, 2021 3:27 pm
- Forum: Pictures and Videos
- Topic: Hellin fossil diatoms. Cyclotella and others.
- Replies: 4
- Views: 1845
Re: Hellin fossil diatoms. Cyclotella and others.
Some more images of diatoms from this deposit. https://live.staticflickr.com/65535/51512598064_3cb9c693b0_c.jpg A beatifull epithemia. https://live.staticflickr.com/65535/51511884036_b28a7e7e50_c.jpg Another one https://live.staticflickr.com/65535/51512109483_34f1be64a8_c.jpg https://live.staticflic...
- Thu Sep 30, 2021 3:13 pm
- Forum: Introduce yourself
- Topic: Hello from Spain.
- Replies: 10
- Views: 3455
Re: Hello from Spain.
This is the first microscope I had, a Philips SEM 525. It was originally from 1985 and I took it back in 2019 because by then I was spending more time repairing it than using it. https://live.staticflickr.com/65535/51535397511_4fc15ce909_c.jpg And this is the current microscope. A Philips-FEI XL30. ...
- Thu Sep 30, 2021 11:39 am
- Forum: Pictures and Videos
- Topic: Hellin fossil diatoms. Cyclotella and others.
- Replies: 4
- Views: 1845
Hellin fossil diatoms. Cyclotella and others.
Hellin fossil diatoms. In the surroundings of Hellin, Albacete / Spain there are several deposits of freshwater fossil diatoms from the Upper Miocene. The distribution of species in each site can vary remarkably. The images below come from the site "El Cenajo" Cyclotella Alvarniensis are especially ...
- Wed Sep 29, 2021 6:17 pm
- Forum: Introduce yourself
- Topic: Hello from Spain.
- Replies: 10
- Views: 3455
Hello from Spain.
I am a retired electronic engineer who dedicates a lot of free time to science. Although I have a couple of optical microscopes, what I use the most is a Philips XL30 scanning electron microscope that I bought second-hand two years ago. 18 years ago I bought my first SEM microscope, a Philips 525, o...