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The early heat loss evolution of Mars and their implications for internal and environmental history

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Ruiz Pérez, Javier (2014) The early heat loss evolution of Mars and their implications for internal and environmental history. Scientific reports, 4 (4338). pp. 1-7. ISSN 2045-2322

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URL Oficial: http://www.nature.com/srep/



Resumen

The time around 3.7 Ga ago was an epoch when substantial changes in Mars occurred: a substantial decline in aqueous erosion/degradation of landscape features; a change from abundant phyllosilicate formation to abundant acidic and evaporitic mineralogy; a change from olivine-rich volcanism to olivine-pyroxene volcanism; and maybe the cessation of the martian dynamo. Here I show that Mars also experienced profound changes in its internal dynamics in the same approximate time, including a reduction of heat flow and a drastic increasing of lithosphere strength. The reduction of heat flow indicates a limited cooling (or even a heating-up) of the deep interior for post-3.7 Ga times. The drastic increasing of lithosphere strength indicates a cold lithosphere above the inefficiently cooled (or even heated) interior. All those changes experienced by Mars were most probably linked and suggest the existence of profound interrelations between interior dynamics and environmental evolution of this planet.


Tipo de documento:Artículo
Palabras clave:Mars; Geology
Materias:Ciencias > Geología > Geodinámica
Código ID:33082
Depositado:10 Sep 2015 11:01
Última Modificación:14 Sep 2015 07:55

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