# data[].attributes.body
Crust
- The surface is made of a thick layer of oxidized iron dust over primarily basaltic rock
- Na, K, Cl, & Mg
- 10-50 km thick
Mantle
- Primarily Si, O, Fe, and Mg
Core
- Solid core of primarily Fe, Ni, S
https://www.space.com/16895-what-is-mars-made-of.html

# data[].attributes.body
Age and structural relationships from photogeology as well as median wavelength gravity anomalies across subduction margins are the data sets most likely to test and modify hypotheses about Mars plate tectonics (Sleep, N.H., 1994. Martian plate tectonics. Journal of Geophysical Research: Planets, 99(E3), pp.5639-5655)

# data[].attributes.body
Lineations associated with Gordii Dorsum are attributed to ridge‐parallel structures, while Phelegra Montes and Scandia Colles are interpreted as transform‐parallel structures or ridge‐fault‐fault triple junction tracks. Other than for these few features, there is little topographic roughness in the lowlands. Seafloor spreading, if it occurred, must have been relatively rapid.

# data[].attributes.body
Today, Mars is believed to be largely tectonically quiescent. However, observational evidence and its interpretation suggests that this was not the case further back in Mars' geological history.

At the scale of the whole planet, two large scale physiographic features are apparent on the surface. The first is that the northern hemisphere of the planet is much lower than the southern, and has been more recently resurfaced – also implying that the crustal thickness beneath the surface is distinctly bimodal. The second is the Tharsis rise, a massive volcanic province that has had major tectonic influences both on a regional and global scale in Mars' past. On this basis, the surface of Mars is often divided into three major physiographic provinces, each with different geological and tectonic characteristics: the northern plains, the southern highlands, and the Tharsis plateau

# data[].attributes.body
a theory explaining the structure of a planet's crust resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.

The process of plate tectonics results in surface modification and recycling of crustal material

# data[].attributes.body
Valles Marineris is an extensive 4,000km-long canyon system - and a potential fault - on Mars that provides evidence for extensive periods of voluminous volcanism as well as tectonic activity. What is the evidence for this? Heavy lava flows are present in layers that compose the canyon walls and the presence of the fault.
What does heavy volcanism say about plate tectonics on mars?

https://www.nature.com/articles/17539.pdf

# data[].attributes.body
- NASA/JPL/University of Arizona [Public domain], <a href="https://commons.wikimedia.org/wiki/File:PIA04256_Map_of_Martian_Silicon_at_Mid-Latitudes.jpg">via Wikimedia Commons</a>

# data[].attributes.body
Preexisting old thick highland crust was subducted, while seafloor spreading produced thin lowland crust during Late Noachian and Early Hesperian time. South dipping subduction occurred beneath Arabia Terra and east dipping subduction beneath Tharsis Montes and Tempe Terra (Sleep, N.H., 1994. Martian plate tectonics. Journal of Geophysical Research: Planets, 99(E3), pp.5639-5655).