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This image shows part of the summit caldera of Ceraunius Tholus. Channels are common on the flanks of this volcano.

Source: THEMIS - Mars Odyssey Mission

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The two craters in this image are located in Zephyria Planum. The crater floors appear to be modified only by deposits of fine materials.

Source: THEMIS - Mars Odyssey Mission

Waspie:
Although you posts are extremely fantastic. I have one question: what would the Martian atmospheric presssure be if it was under Earth's gravitational field? Just curious.

Mars has a gravity of about 38% of Earth's and a surface atmospheric pressure of about 0.7% that of Earth's. If Mars gravity was to be increased to that of Earth's, with out the amount of gas present changing, I think (but I don't know for sure) that the atmospheric pressure would increase proportionally to the increase in gravity. This would still only give you a pressure of about 1.8% that of Earth's (this is still less than atmospheric pressure at an altitude of 20 miles above the Earth (far to thin to breath).

I suspect that the reality is not as simple as this. If Mars had a higher gravity to begin with then less of it's atmosphere would have escaped hence there would be a thicker atmosphere than we see now and hence the atmospheric pressure would be considerably greater.

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The ridges on the floor of this crater are made of a more resistant material that their surroundings. Erosion is removing the less resistant material.

Source: THEMIS - Mars Odyssey Mission

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Lycus Sulci is a complex area of ridges and valleys that surrounds the northern and western margins of Olympus Mons. How it formed is unknown.

Source: THEMIS - Mars Odyssey Mission

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Lycus Sulci is a complex area of ridges and valleys that surrounds the northern and western margins of Olympus Mons. How it formed is unknown.

Source: THEMIS - Mars Odyssey Mission

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The surface of the ejecta surrounding this crater is scored with fine radial grooves. The grooves were formed during the impact event.

Source: THEMIS - Mars Odyssey Mission

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Aram Chaos is a complex region which contains layered material with different surface textures and heavily fractured material forming chaos.

Source: THEMIS - Mars Odyssey Mission

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In this image the action of the wind is forming yardangs. The top layer of material is being removed by the wind, revealing an older surface below - like the crater at the bottom of the frame.

Source: THEMIS - Mars Odyssey Mission

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These lava flows and channels are part of Alba Patera, a large collapsed volcano in the Tharsis region.

Source: THEMIS - Mars Odyssey Mission

Waspie:

If you look at this picture closely, does this not remind us of a bunch of iceburgs frozen in the artic north sea? I believe there are more pictures like this one from different areas on Mars...If so, can you post them?

***EDIT*** - I edited the quote so that it did not include the enire post, as it was taking up a large amount of room and replaced full image with thumbnail - Waspie_Dwarf

Steeler,
I can see the similarity to ice, but it is actually rock formations. There is more on this region in THIS POST.

There are many thousands of Mars pictures taken over the last decade on several different NASA and ESA sites. Finding individual ones would be hard work for an expert and that is something I am not.

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In this part of the Tharsis region, old lava flows have been fractured. Younger lava flows are unfractured (flow at bottom).

Source: THEMIS - Mars Odyssey Mission

thanks for responding Waspie, but I still think, there are hidden earthlike things on Mars..
Those so remind me of frozen iceburgs...just like the frozen ice on a small pond that was broken and refroze....I guess we all will find out when man does walk the surface of Mars and sees first hand that Mars has frozen lakes and oceans....

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Exhumation of craters, the uncovering of old craters hidden from view by younger surface material, is common in many regions of Mars. This crater and its covering material are located in Amazonis Planitia.

Source: THEMIS - Mars Odyssey Mission

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The material covering the floors of these two craters looks very different from the surrounds. The unusual markings of the floor material indicates that a volatile, such as ice, has affected the appearance of the surface.

Source: THEMIS - Mars Odyssey Mission

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Many craters in the northern plains look like the one in this image - interior filled almost to the rim, narrow and steep ejecta surrounding the rim, little or no remaining distant ejecta. It is assumed that the climate in the region has affected the appearance of these craters.

Source: THEMIS - Mars Odyssey Mission

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The narrow, channelized lava flows in this image occur on the flank of Olympus Mons.

Source: THEMIS - Mars Odyssey Mission

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Paired fractures with a downdropped block between them are termed graben. Graben are common on Alba Patera, where this image is located.

Source: THEMIS - Mars Odyssey Mission

Be nice if you included the present temperatures at various spots. I know that is way less than Earth's at these points, but it does get to 80 degrees at the equator.


***EDIT*** I have edited out the majority of the quote as this contained a long post in it's entirety. In cases such as this it is not necessary to quote the whole of the post you are replying to. - Waspie_Dwarf

Steeler, I am neither a NASA scientist nor am I a search engine. These posts are as issued by NASA and re-posted by me, so if you have problems with the content please contact NASA.

If you wish to learn more may I suggest Google, AltaVista or any other reputable search engine.

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The martian region called Deuteronilus is characterized by hills and mesas surrounded by broad debris slopes. Some of the slopes have surface markings that may indicate volatiles are mixed in with the debris.

Source: THEMIS - Mars Odyssey Mission

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This heavily dissected surface is located within the Acheron Fossae region.

Source: THEMIS - Mars Odyssey Mission

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This image shows part of the Meridiani region of Mars, home of the Opportunity Rover.

Source: THEMIS - Mars Odyssey Mission

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Fracturing and erosion in this region is creating chaos terrain.

Source: THEMIS - Mars Odyssey Mission

Your last post sure looks like chunks of ice that have been frozen in time.
Looks like an artic scene, only with red dust covering the ice chunks. wonder what is under that red dust?
I could be very wrong, but this scene, along with others, remind me of that.

I guess the answer will await manned exploration..and I believe man will find many shocking discoveries that prove and disprove past thoughts..

This isn't ice. Instruments aboard several of the orbiting satellites are capable of detecting large bodies of water ice.

Here are some explanations of Martian chaotic terrain:

Source: NASA Astrobiology Magazine 24th September 2004


Source: Planetary Society Weblog

Yes, my friend, but to me it still looks like ice chunks in the artic...JMO.
Water is still the culprit, whether ice or liquid.

I just wish we could go back in time to actually see what happened. Maybe after manned exploration, we will know the truth.

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This region of sulci (ridges and valleys) is covered by old sand dunes.

Source: THEMIS - Mars Odyssey Mission

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These lava flows are part of Olympus Mons.

Source: THEMIS - Mars Odyssey Mission

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These old dunes and the surrouning wind eroded material are part of the Medusa Fossae Formation.

Source: THEMIS - Mars Odyssey Mission

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These lava flows are part of Ascraeus Mons.

Source: THEMIS - Mars Odyssey Mission

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The wind is eroding some of the materials in this region more readily than others, indicating a complex surface history.

Source: THEMIS - Mars Odyssey Mission

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In this image wind seems to be the dominant process, but lava flows are still recognizable from the surface texture. It appears that the lava flow (top left) is relatively thin, and the material below is easily eroded by the wind.

Source: THEMIS - Mars Odyssey Mission

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Tectonic activity in this region has not only fractured the surface, but has tilted some of the fracture blocks.

Source: THEMIS - Mars Odyssey Mission

or once again, is it ice blocks? sure does look like it....
I can't help think that what we see in pictures like this, we are seeing chunks of ice (ice burgs) covered with dust.

How many times are you going to repeat yourself Steeler?

It doesn't matter what you think it looks like, it is rock.

Look at the craters in it. There are quite a few. That indicates that the surface is old. Mars is too warm ice to behave like it does on the surfaces of the outer planets moons. There it is cold enough for impact craters to remain for aeons. On Mars the surface temperature is sufficient for ice to melt. Craters would not last long in that environment. Even at the poles of Mars where ice DOES exist on the surface it expands and retreats with the seasons. There are no signs of these processes here or in any of the other pictures where you have said that it looks like ice to you.

Add to this that Mars Express has instruments specifically designed to look for water, if it was sitting on the surface in huge blocks don't you think they would have found it?

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This field of sand dunes occurs within Chasma Borealis.

Source: THEMIS - Mars Odyssey Mission

Yes Waspie, I know, I was just mentioning what it looks like...Sorry to ruffle your feathers, old man.
I seen this in the Artic while in the navy.....sorry.

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This old crater in Terra Sabaea has patterned floor material that is indicative of having a volitile component. At high latitudes the volitile is most likely ice.

Source: THEMIS - Mars Odyssey Mission

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This image shows part of the large dune field (or erg) that exists surrounding the north polar ice cap.

Source: THEMIS - Mars Odyssey Mission

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These bright and dark windstreaks are located in the plains surrounding the north polar cap.

Source: THEMIS - Mars Odyssey Mission

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The two landslides in this image are located in Aeolis Mensae.

Source: THEMIS - Mars Odyssey Mission

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The sand dunes in this image surround the northwestern half of the central peak of this crater.

Source: THEMIS - Mars Odyssey Mission

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This landslide was formed when part of the channel wall collapsed. This image shows part of Kasei Vallis.

Source: THEMIS - Mars Odyssey Mission

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Gullies occur on the rim of this northern plains crater.

Source: THEMIS - Mars Odyssey Mission

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This images shows part of the main channel of Mamers Vallis as well as one of it's tributaries.

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