La Geología de todos los planetas
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Publication date
2005
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Real Sociedad Española de Historia Natural
Citation
Anguita Virella, F. (2005) «La Geología de todos los planetas», Boletín de la Real Sociedad Española de Historia Natural. Sección geológica, 100(1), pp. 5-24.
Abstract
Este trabajo incluye una selección de problemas geológicos por resolver en el Sistema Sola, en la Tierra, su composición y heterogeneidad, la fuente de energía de su núcleo, su historia climática y el origen de la vida. Se revistan también el origen de la Luna y Mercurio mediante hipotéticas colisiones, así como la posibilidad de un océano primordial en Venus, y las ideas sobre su vulcanismo y su tectónica. En Marte, la tectónica, tanto primordial corno moderna, constituyen un problema por resolver, que se añade a la longevidad del vulcanismo sobre un núcleo trío, y a las cuestiones climática y biológica. En el exterior del sistema se revisan la dinámica de los núcleos de los planetas gigantes, y los satélites cuya geología es especialmente activa. Por último, se introduce el tema de los planeta extrasolares y las perspectivas que abren a la Geología clásica, con el objetivo de una Teoría General de Evolución Planetaria como horizonte final.
This paper contains an excerpt of Solar Systems still pending geological problems. Regarding the Earth, I deal here with her composition and heterogeneity, with her core source of energy, her climate history, and with the classical question of the origin of life. The Moon and Mercury's births trough collisions are also reviewed, as well as the evidence for (and against) an ancient ocean on Venus, and our still very crude ideas over her volcanism and tectonics. The Martian tectonics, pristine and recent as well, are hard problems to solve (and ones not even recognised by textbooks), as is the persistent volcanism over a seemingly cold (magnetic field closed at -4 b.y.) core, not to mention the famous water and life (?) questions. The outer Solar System is treated through several topics, as are the dynamic state of the cores of the gas giants, and the satellites (lo, Europa, Ganymede, Enceladus, Iapetus, Titan, Triton, and Miranda) distinguished by their special activity or strange evolution. Finally, the exoplanets are viewed as a great opportunity for Geology lo close its parochial stage, and enter the age of generalisations leading lo a General Theory of Planetary Evolution.
This paper contains an excerpt of Solar Systems still pending geological problems. Regarding the Earth, I deal here with her composition and heterogeneity, with her core source of energy, her climate history, and with the classical question of the origin of life. The Moon and Mercury's births trough collisions are also reviewed, as well as the evidence for (and against) an ancient ocean on Venus, and our still very crude ideas over her volcanism and tectonics. The Martian tectonics, pristine and recent as well, are hard problems to solve (and ones not even recognised by textbooks), as is the persistent volcanism over a seemingly cold (magnetic field closed at -4 b.y.) core, not to mention the famous water and life (?) questions. The outer Solar System is treated through several topics, as are the dynamic state of the cores of the gas giants, and the satellites (lo, Europa, Ganymede, Enceladus, Iapetus, Titan, Triton, and Miranda) distinguished by their special activity or strange evolution. Finally, the exoplanets are viewed as a great opportunity for Geology lo close its parochial stage, and enter the age of generalisations leading lo a General Theory of Planetary Evolution.
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