Unusual Craters: The Weird and the BizzZZarrrre on the Moon Outline I.#Impact#Mechanics II.#Unusual#Crater#forms#on#the#Moon # 1.#Oblique#Impacts # # a.#Ejecta#Abnormali=es # # b.#Crater#Abnormali=es # # c.#Look#Alikes # 2.##Simultaneous#Impacts # # a.#Binary#Impacts # # b.#Crater#Chains # 3.#Dark#Haloed#Craters # # a.#FireIfountaining # # b.#Dark#Mare#Exhuma=on # 3.#Concentric#Ring#Craters # 4.#Square#Craters # 5.#Floor#Fractured#Craters III.#Other#Terrestrial#Worlds # 1.#Mars # 2.#Venus### # Impact Mechanics Terms 1.#Central#Peak 2.#Floor 3.#Terracing 4.#Rim 5.#Con=nuous######### ####Ejecta 6.#Discon=nuous# ####Ejecta 7.#Secondary# ####Cratering Crater#Copernicus 8.#Bright#Ray### CLA#D19 ####PaWern Stages'of'Crater'Forma.on 1.#Contact#and#Compression # a.#Velocity # b.#Kine=c#Energy # c.#Shock#wave # d.#Vaporiza=on,#Melt,#Shock,#Fracture # e.#Je^ng,#Spalla=on 2.#Excava=on#Phase # a.#Rarefac=on#Wave # b.#Transient#Crater # c.#Ejecta#PaWerns # d.#Point#transfer# 3.#Modifica=on#Phase # a.#Slipping # b.#Central#Peak#forma=on # c.#Terrace#forma=on # d.#Landslides !

Crater#Forma=on Traces#of#Catastrophe,#French,#21. Simple#Crater

AS10I29I4324,#AS10I29I4253 CLA#D19 Complex#Crater

Crater)Copernicus CLA#Div Oblique Impacts Copernicus#Rays CLA#Div Tyco#Rays CLA#Giii Crater#Migra=on#in#Oblique#Impacts IP#=#impact#point;#CC#=#center#of#final#crater J.#Anderson#and#P.#Schultz;#“Flowfield#Center#Migra=on#During#Oblique#Impacts:#Implica=ons#for# Curved#Uprange#Ejecta#Rays;”#LPSC#XXXVII;#3/2006;##1726. Crater#Migra=on N.#Artemeiva#and#B.#Ivanov,#Numerical#Simula=on#of#Oblique#Impacts,#LPSC#XXII,#2001. Experimental!Ejecta!Curtains! 1!km/sec!bolide!in!a!vacuum!at!90,!45,!and!30!degrees Anderson,#Schultz,#Heineck,#“A#New#View#of#Ejecta#Curtains#During#Oblique#Impacts#Using#3D# Par=cle#Imaging#Velocimetry,#LPSC#XXXI#(2000),##1749. Oblique#Impacts AS#15I9337p AS#16I4511p Crater#Thales CLA#A1,#Aii Proclus CLA#Ci Impact#less#then#5#degrees AS#15I9254p Oblique#Impact#on#Mars# S=ckle#and#Schultz,#“Subsurface#Damage#Following#Projec=le#Decapita=on,”#LPSC#43#(2012),##12169. Craters#Messier#and#Messier#A CLA#E3,#Ei Messier#Ejecta Wilhelms,#The#Geologic#History#of#the#Moon,#38 LOvI5041Im Experimental#Oblique#Impacts Wilhelms,#The#Geologic#History#of#the#Moon,#38. Possible)Explana5ons 1.Separate!ProjecCles Messier#Craters Wilhelms,#The#Geologic#Atlas#of#the#Moon,#38.# 2.Binary!ProjecCle 3.DecapitaCon,!Ricochet 4.Local!geology! Secondaries#of#Langranus CLA#E4 Secondary#Craters#of#Crater#Copernicus LOivI148m,#ivI142m,#ivI144m Crater#Endymion CLA##A1 Rec=fied#Lunar#Atlas,#8b Crater#Torricelli LoivI477Ih3 LoivK179Kh2 Simultaneous Impacts Binary#Impacts Wilhelms,#The#Geologic#History#of#the#Moon,#33 Bessarion#A LO#ivI144h Imbrium#(Plato#K,#KA),#Clavius#(unnamed) LOvI102m,#ivI136Ih1 Catena#Davy AS16I2197 Abulfeda#Crater#Chain CLA#F8,#LOvI184m Hyginus#Rille LOvI187Im Endogenous#Chain#(near#Gruithuisen) LOVI183Im Dark Haloed Craters Dark#Haloed#Crater#Types LOiiiI164m,#146m,#Ranger#9#(cf.#Head,#LPSC#1975,#6.349I351). Cinder#Cone,#Hawaii Cinder#Cone#on#the#Moon AS17IMI305 Dark#Haloed#Craters#in#Alphonsus Ranger#9#images Dark#Haloed#Craters Theophilus#(CLA#E5,#E7,#AS#16I029M),#Copernicus#(CLA#D19) Concentric)Ring)Craters Crater#Hesiodus LOivI120Ih1 Concentric#Ring#Craters,# Intermediate#Forms LOivI101Ih3 Concentric#Ring#Craters#(Lavoisier,#Repsold) LoivI189Ih2,#LoivI189Ih3 Concentric#Ring#Craters Trang,#GillisIDavis,#Hawke,#and#Bussey,#“The#Origin#of#Lunar#Concentric#Craters,”#LPSC#42#(2011),#no.# 1698. Crater#Marth CLA#F20,#LOivI136Ih3 Concentric#Ring#Crater#“Look#Alikes” LOivI169Ih1;#LOivI174Ih2;#LOivI076Ih2 Floor)Fractured)Craters Floor#Fractured#Craters LOivI189Ih2,#LOivI189Ih3 Crater#Petavius USAF#Lunar#Atlas#1#A6Ib,#CLA#F2,#LOivI184Ih2 Crater#Petavius LOvI035Im Crater#Atlas CLA#A1,#SmartI1 Crater#Atlas Gaddis:#LPSC##43#(2012),#2787 Craters#with#Volcanic#Components AS17IMI0834,#LOvI183Im Non-Circular Craters Barringer#Crater Shane#Torgerson Oddly#Shaped#Craters LOivI101Ih3 Crater#Goclenius AS8I13I2225 Crater#W.#Bond CLA#A8 Other Terrestrial Planets