Tarpeia is a pristine irregularly-shaped crater located within a region of grooved terrain in Vesta's southern hemisphere, insideRheasilvia basin. The interior of Tarpeia hosts numerous small craters less than 1 kilometer in size.[3][4] The region immediately surrounding Tarpeia is relatively young and uniform; despite this, the interior of Tarpeia is compositionally diverse. The southwestern rim of Tarpeia is especially bright and anhydrous, likely due to the impact event that created it depleting the crust ofhydroxide. The interior of Tarpeia containsiron-richpyroxene and is rich indiogenite, likely brought up from Vesta's upper mantle by theimpact event that created Rheasilvia basin.[5]
^"Rheasilvia".Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.(NASA coordinates)
^Ammannito, E.; De Sanctis, M. C.; Combe, J. -Ph; Frigeri, A.; Jaumann, R.; Longobardo, A.; McSween, H. Y.; Palomba, E.; Tosi, F.; Raymond, C. A.; Russell, C. T. (October 2015). "Compositional variations in the Vestan Rheasilvia basin".Icarus.259:194–202.Bibcode:2015Icar..259..194A.doi:10.1016/j.icarus.2015.05.017.
