Meteorites   View all facts   Glossary   Help

rock > metamorphic rock > shocked meteorite > S4 shock stage meteorite

S4 shock stage meteorite comparison table

Subject	has sediment mechanism	has shock texture	has metal abundance	has part mean Ni content of sulfide	has minerology	has degree of shock metamorphism	has age	has refractory inclusion abundance	has shock stage	has distinguishing feature	has part feldspar	has part metal maximum bulk	has olivine grain characteristic	has pyroxene shock metamorphism	has likely origin	has degree of secondary process	has solidification mechanism	is independent of	has shock diagnostic mineral	has olivine shock metamorphism	has chondrule glass type	be shock	has homogeneity of olivine and low Ca pyroxene	has letter designation	has chondrule abundance	has part chondrule	has total mass of find	has structural state of low Ca pyroxene	has peak temperature	has plagioclase shock metamorphism	has orthopyroxene shock metamorphism	has parent body	has part matrix	has matrix abundance	has petrologic type range	has matrix composition	has part carbon	has characteristic mineral	is a kind of	has part water	has number of find	has origin	has shock pressure	has solidification timescale	has chondrule mean diameter	has petrology
medium shock ureilite		greater extent of fracturing, undulatory extinction, and kink banding			olivine, pyroxene (some combination of pigeonite, orthopyroxene, augite)	medium			S4-S6	no chondrules			reduced rims contacting carbonaceous matrix material 0.1 mm FeO-free olivine and/or enstatite rims riddled with tiny inclusions of low-Ni metal	may be cloudy due to glassy inclusions	partial melting residue		cooling in deep underground chambers		diamonds and/or lonsdaleite	sub-grain boundaries may be prominent				AURE			9 kg (out of date)									carbon, metal, sulfides small silicate grains along grain boundaries less than 10% by volume		olivine-pigeonite about 90% by volume	S6 shock stage meteorite		6 (out of date)	asteroid	from 20 GPa to 100 GPa	very slow		coarse-grained granular
S4 shock stage chondrite	agglomeration of particles, many of which record individual, diverse histories		in volume %	in weight %		moderately shocked	oldest and most primitive rock in solar system	in volume %	S4		usually plagioclase tectosilicate	in weight %				providing insight into geological evolution of parent asteroid		the nature and degree of thermal metamorphism or aqueous alteration	orthopyroxene for enstatite chondrite	weak mosaicism, planar fractures		before, during or after other types of metamorphism	definition goes here		in volume %	small sphere of about 1 mm diameter of formerly melted minerals	485755 kg	definition goes here	less than 950 degree Celsius during its entire history since solidification	undulatory extinction, partially isotropic, planar deformation features	weak mosaicism, twinning on (100), planar fractures	asteroid smaller than 100 km in diameter	fine grained disequilibrium mixture of silicates, oxides, metal, sulfides and organic constituents	in volume %	which depends on degree of aqueous alteration and thermal metamorphism		in weight %		S4 shock stage meteorite	in weight %	1691	meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimal	30 to 35 GPa		millimeters

Next shocked meteorite: S5 shock stage meteorite    Up: shocked meteorite    Previous shocked meteorite: S3 shock stage meteorite