What is the mode of genesis for these ring-like features and deposition environment of these sandstone boulders?

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What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Is IMPACT FACTOR justified in case of Taxonomy?

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26 February 2021 5,851 1 View

Why tick's salivary gland extract didn't run in the gel (SDS PAGE )??

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25 February 2021 7,698 3 View

Is it possible to set a breakpoint at a specific DYNAMIC instruction using the GNU Debugger (GDB)?

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24 February 2021 1,598 2 View

How to measure the pH of Peat Soil?

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18 February 2021 9,424 7 View

How to Measure Consumer Willingness To Change from petroleum-fueled vehicle to electric vehicle?

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15 February 2021 9,190 5 View

Can Immunogenic BNT162b vaccines protect HUMANS from SARS-CoV-2?

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11 February 2021 6,628 9 View

Having trouble mounting the sections on the slides for IHC staining, what solution should I use?

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08 February 2021 6,880 3 View

Does Abaqus plugin AM-Modeler predict the same temperature/crystallinity history as UMATHT user-subroutine?

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06 February 2021 4,686 1 View

How to use Image Lab to take an image for the bands and the ladder in the same image merged together in Western Blot?

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04 February 2021 9,996 2 View

No title

Hi, I have several doubts about one paper (Systematic Literature Review) that was rejected. The main topic is Single-Board Computers in engineering education during the period 2010-2020. The...

01 March 2021 9,015 3 View

Are there methods for automatically mapping floodplains, fans and terraces?

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22 February 2021 7,800 3 View

Handheld Portable Raman spectroscopy systems - recommendations and experience?

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07 February 2021 9,691 3 View

Question regarding appropriate statistical analysis?

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30 January 2021 3,296 4 View

How to add journals not listed on Research Gate ?

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26 January 2021 7,158 7 View

Can I use MERRA-2 model's "500hpa geopotential height" monthly data in excel form for districts or I download the data in netcdf files and extract it?

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25 January 2021 6,144 1 View

Best way to optimize species-specific primers? Can I use a temp gradient to test a Ta where I will get target (and no non-target) amplification?

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18 January 2021 1,981 6 View

Does anyone know about vision-guided control of civil structures?

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03 January 2021 7,566 1 View

Why people feel fear and not share their particulars during social or questionnaire survey, especially in Pakistan?

01 January 2021 4,782 12 View

Basmati rice and GI tag?

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16 December 2020 8,402 3 View

Harald G. Dill

It is some kind of Liesegang rings caused by diffusion

Kind regards

H.G.Dill

Ijaz Ahmad

A previous question on RG

https://www.researchgate.net/post/How_are_liesegang_rings_formed_in_sandstone

Ibrahim M. J. Mohialdeen

I agree with Dr Dill it is mostly Liesegang structures.

We recorded it from Late Jurassic and Cretaceous formations in Kurdistan.

Some of them are very rich with organic matter and others are rich with iron oxide.

Mahendra Dhande

Depending on Quality of stone