User:Tyrol5/Janssen Formation

The Janssen Formation is a selenological formation on the near side of Earth's Moon. It lies primarily to the southeast of the Mare Nectaris impact basin and is likely to predominantly consist of ejecta from the impact that formed the basin. Lunar geologists compare the formation with the Fra Mauro Formation (Mare Imbrium ejecta) and the Hevelius Formation (Mare Orientale ejecta).

Geology
LPC source, listed

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/1999JE001130 - general description, mention of Descartes formation

Leake dissertation - downloaded, more general description

https://books.google.com/books?id=ktfjQSHb8rEC&pg=PA71&lpg=PA71&dq=janssen+formation+nectaris&source=bl&ots=FHfGxIH6Tf&sig=fWORpYCVXPY650I8Sz-f7Rcrov4&hl=en&sa=X&ved=2ahUKEwiosqvg-vLcAhXFuFkKHXthC3kQ6AEwBXoECAYQAQ#v=onepage&q=janssen%20formation%20nectaris&f=false - hummocky, lineally radiated deposits of ejecta