Hodge-podge in Miranda

Profesor: Jose A. CaballeroVíctor Pereira Blanco

• General properties and description

• Miranda´s surface: hodge-podge

• Theories

Index

General properties and description

Miranda: Uranus VDiscovered by Gerard Kuiper in 1948Voyager 2 in 1986

Miranda´s surface: hodge-podge Theories

gg

mkg

kgM

01.0

/1200

10·6.6

3

19

kmd

A

kmR

000,130

27.0

240

dPP

KT

trasrot 413.1

43

General properties and description Miranda´s surface: hodge-podge Theories

Voyager 2 image of Miranda taken shortly before closest approach. January 24, 1986. Range, 21,000 miles.

Craters, coronae, ridges,grooves, cliffs….

A patchwork of regions

General properties and description Miranda´s surface: hodge-podge Theories

This cliff is called "Verona Rupees" and is the deepest of any known cliff in the solar system,

between 10-20 KM high!

January 24, 1986. Range, 22,000 miles. Photo Credit NASA.

General properties and description Miranda´s surface: hodge-podge Theories

Along the edge of Miranda'sface, a wide band of ridges and grooves cut across the surface like a racetrack

January 24, 1986. Photo Credit NASA

General properties and description Miranda´s surface: hodge-podge Theories

A series of lighter and darker colours arranged in a V shape

Chevron

January 24, 1986. Photo Credit NASA

General properties and description

1. It was predicted that Miranda would be too small to show any signs of geological activity...

2. A collision broke it into icy and rocky pieces that then fell back together:denser rocky to the centre and ice remain in the surface. This friction would have warm the icy interior an created currents like a boiling soup.Currents would have compressed the crust.

Miranda´s surface: hodge-podge Theories

General properties and description

3. Diapirs: something rising up from below, in this case, warm ice.

a type of intrusion in which a more mobile and ductily-deformable material is forced

into brittle overlying rocks

Destruction and re-assembly no longer necessary

Heat needed for explaining the shape of the surface: resonance in the past.

And then...nothing. Work unfinished.

Miranda´s surface: hodge-podge Theories

FinThank you for your attention

References:

NASA´s Solar System Exploration site.Views of the Solar System: Mirnda, a Moon of Uranus.Surface of Miranda: Identification of Water IceHamilton Brown, R., Clark, R.N 1984Icar...58..288BCratering history of Miranda: Implications for geologic processes. Plescia, J.B. 1988Icar...73..442P