For classification purposes, the general descriptive term ‘minor ridges’ characterizes ridges that are not part of the Saturnalia Fossae and are an order of magnitude smaller (maximum width of <1 km vs. Smaller, second-order structures (maximum width of <1 km) are distinguished from the Saturnalia Fossae, a first-order structure, by the use of the general descriptive term ‘adjacent structures’, which encompasses minor ridges, grooves and crater chains. The Saturnalia Fossae consist of five separate structures: Saturnalia Fossa A is the largest (maximum width of ∼43 km) and is interpreted as a graben, whereas Saturnalia Fossa B-E are smaller (maximum width of ∼15 km) and are interpreted as half grabens formed by synthetic faults. The mapped units, ordered from oldest to youngest age based mainly on cross-cutting relationships, are: (1) Vestalia Terra unit, (2) cratered highlands unit, (3) Saturnalia Fossae trough unit, (4) Saturnalia Fossae cratered unit, (5) undifferentiated ejecta unit, (6) dark lobate unit, (7) dark crater ray unit and (8) lobate crater unit. Our work indicates that impact processes created and/or modified all mapped structures and geomorphic units. Expanding upon this earlier work, we conducted photogeologic mapping of the Saturnalia Fossae, adjacent structures and geomorphic units in two of Vesta’s northern quadrangles: Caparronia and Domitia. Previous work has shown that the formation of the Rheasilvia impact basin induced the equatorial Divalia Fossae, whereas the formation of the Veneneia impact basin induced the northern Saturnalia Fossae. Vesta’s low surface gravity (0.25 m/s 2) has led to the continual absence of a protective atmosphere and consequently impact cratering and impact-related processes are prevalent.
They help to add voice to your writing.Vesta is a unique, intermediate class of rocky body in the Solar System, between terrestrial planets and small asteroids, because of its size (average radius of ∼263 km) and differentiation, with a crust, mantle and core. Interjections can really liven up a sentence. Such examples are Wow!, Ouch!, Hurray!, and Oh no!. Interjection - An interjection is a word that shows strong emotion. Homographs - Homographs are words that may or may not sound alike but have the same spelling but a different meaning.Ĭomplex Sentence - A complex sentence is an independent clause joined by one or more dependent clauses.
Homophones - Homophones are words that sound alike but they have different meanings and different spellings. Some examples are in, out, under, over, after, out, into, up, down, for, and between. Preposition - A preposition is a word that shows position or, direction.
Some examples conjunctions are: and, but, or, nor, although, yet, so, either, and also. It tells what kind, how many, or which one.Ĭonjunction - A conjunction is a word that joins words or word groups together. It may stand for a person, place, thing, or idea.Īdjective - An adjective is a word that describes a noun or pronoun. Proper Noun - The pronoun is a word used in place of one or more nouns. Nouns are the subject of a sentence.Ĭommon Noun - A noun that does not name a specific person, place or thing. Noun - A noun is a person, place, thing, or idea. They tell how much, how often, when and where something is done. Verb - A verb is a word that expresses an action or a state of being.Īdverb - An adverb describes how the action is performed.
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