Planetary Geology - Science topic

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Dear Jayson

Hi I think they can be intermediate or acidic volcanic and volcanosedimentary rocks such as Rhyolite, Dacite , Andesite and related tuffs to these rocks.

With best wishes

Dr Gholamreza Fotoohi Rad

Dear Gerges Francis Tawdrous,

Thank you very much for your participation in our discussion and for the relevant information provided to help define the data, trajectory of Mars' motion.

Thank you, Regards,

Dariusz Prokopowicz

Dear Mauro Lucarini

Last five years i have been involved,planetary geology via many different applications. Heading with extreme conditions via planet earth, expecting study of micro_fossils & meteorites are so reliable . Even spectrometer data also providing a raw details in different moods .

Like I said the paper is old (nearly four decades!). But to say that 'it does not possess any scientific approach based on a physical or mathematical background' would be unfair I think, especially given the understanding in the late 70's. If I were you, I would sift through existing literature on the topic and get in touch with subject matter experts like Phillip Christensen to take the discussion further. In any case, good luck with your research.

Not yet !

Dear Christoph,

Please use the following links free access of data related to Mars, our Moon, Venus and Mercury etc. All these links would be of your use and help you get what exactly you are looking for.

The data sets available at the aforementioned links are absolutely free. There are very interesting images and themes what can be explored by your students. The images/EDR products can be downloaded in .tiff/jp2 formats and they are all compatible with ENVI/ArcGIS softwares. Should you feel any problem in accessing the data sets, please feel free to contact.

Best Wishes

Rishitosh K SInha

Curiosity's deepest drilling was 5 cm (as initially planned).

This is an interesting question, one suggestion I have relates to a method for deriving air density based on the terminal impact velocity of raindrops (density 1), although several process-related assumptions are necessary.  I learned of this method from Dave Pyle (Oxford) in discussion for use with soft pyroclastic ash and possibly impact ejecta, and there are now a few papers applied to the Archaean, see Som et al (Nature 484, 359-362) Air density 2.7 billion years ago limited to less than twice modern levels by fossil raindrop imprints. If splash textures related to terminal velocities of fall-back impact spherules could also be established, it might then be possible to extract more precise estimates based on heavier particles (density >>1), but I am not sure such rock surfaces exist for the Precambrian.  In the ~end Cretaceous Chicxulub global ejecta, potential atmospheric interactions are complex, but may hint at a separate method for future extraction of chemical evidence for oxygen in Precambrian impact ejecta/spherule beds. An on line PhD thesis by Tamara Goldin (university of Arizona, 2008) sets the scene for atmospheric interactions from Chicxulub ejecta, and Precambrian impact spherule beds have been reviewed by Johnson and Melosh (2012, Nature 485, 75-77) and Glass and Simonson (2013) Distal impact ejecta layers (Springer). 

Hi Lucas,

There is a relatively new Special Publication of the Geological Society of London (vol. 401) called Volcanism and Tectonism Across the Inner Solar System which may be of interest to you.

Good luck with your work.

Col.

thanks i'll think about your sugestions

Warm regards

Here's a link to an abstract from over 30 years ago where we talked about some observations of the grooved terrain on Ganymede. Unfortunately the image didn't show up on this version, but you may be able to find it in the LPSC abstract archives in your library.

Quantification of the elemental incompatibility sequence, and composition of the “superchondritic” mantle by Youxue Zhang

<http://www.sciencedirect.com/science/article/pii/S0009254114000448>