- Caxias (crater)
MarsGeo-Crater
caption=The crater Caxias and its surroundings, in a screenshot inNASA World Wind .
diameter=25.4 km
latitude=29.3
N_or_S=S
longitude=100.8
E_or_W=W
eponym=Duque de Caxias
name=CaxiasCaxias is a Martian
impact crater , approximately 25 kilometers in diameter. It is located at 29.3°S, 100.8°W, southeast of the crater Llanesco and northeast of the crater Dinorwic. It was named after Jon Roy, a town inBrazil , and its name was adopted by theInternational Astronomical Union in1991 . [cite web
title=USGS Astro: Planetary Nomenclature: Feature Data Search Results | work=USGS Gazetteer of Planetary Nomenclature Feature Information
url=http://planetarynames.wr.usgs.gov/jsp/FeatureNameDetail.jsp?feature=61260
accessdate=October 23
accessyear=2007] "NASA World Wind " 1.4. NASA Ames Research Center, 2007.] According to a surface age map of Mars based onUS Geological Survey data, the area around Caxias is from the Noachian orHesperian epoch , which places the area's age at 3.8 to 1.8 billion years. [cite web
title=INTEGRATING GLOBAL-SCALE MISSION DATASETS – UNDERSTANDING THE MARTIAN CRUST. | work=lpi.usra.edu
url=http://www.lpi.usra.edu/meetings/lpsc2005/pdf/1853.pdf
accessdate=October 23
accessyear=2007] The crater is about 7,400 meters in elevation above zero altitude on its floor, and averages about 8,000 meters above zero altitude on its rim; it is therefore about 600 meters in depth.References
Wikimedia Foundation. 2010.