title: Pyroclastic activity at Home Plate in Gusev Crater, Mars.
abstract: Home Plate is a layered plateau in Gusev crater on Mars. It is composed of clastic rocks of moderately altered alkali basalt composition, enriched in some highly volatile elements. A coarsegrained lower unit lies under a finer-grained upper unit. Textural observations indicate that the lower strata were emplaced in an explosive event, and geochemical considerations favor an explosive volcanic origin over an impact origin. The lower unit likely represents accumulation of pyroclastic materials, whereas the upper unit may represent eolian reworking of the same pyroclastic materials.
authors.affiliation: Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA.
authors.forename: S W
authors.initials: SW
authors.lastname: Squyres
authors.forename: O
authors.initials: O
authors.lastname: Aharonson
authors.forename: B C
authors.initials: BC
authors.lastname: Clark
authors.forename: B A
authors.initials: BA
authors.lastname: Cohen
authors.forename: L
authors.initials: L
authors.lastname: Crumpler
authors.forename: P A
authors.initials: PA
authors.lastname: de Souza
authors.forename: W H
authors.initials: WH
authors.lastname: Farrand
authors.forename: R
authors.initials: R
authors.lastname: Gellert
authors.forename: J
authors.initials: J
authors.lastname: Grant
authors.forename: J P
authors.initials: JP
authors.lastname: Grotzinger
authors.forename: A F C
authors.initials: AF
authors.lastname: Haldemann
authors.forename: J R
authors.initials: JR
authors.lastname: Johnson
authors.forename: G
authors.initials: G
authors.lastname: Klingelhöfer
authors.forename: K W
authors.initials: KW
authors.lastname: Lewis
authors.forename: R
authors.initials: R
authors.lastname: Li
authors.forename: T
authors.initials: T
authors.lastname: McCoy
authors.forename: A S
authors.initials: AS
authors.lastname: McEwen
authors.forename: H Y
authors.initials: HY
authors.lastname: McSween
authors.forename: D W
authors.initials: DW
authors.lastname: Ming
authors.forename: J M
authors.initials: JM
authors.lastname: Moore
authors.forename: R V
authors.initials: RV
authors.lastname: Morris
authors.forename: T J
authors.initials: TJ
authors.lastname: Parker
authors.forename: J W
authors.initials: JW
authors.lastname: Rice
authors.forename: S
authors.initials: S
authors.lastname: Ruff
authors.forename: M
authors.initials: M
authors.lastname: Schmidt
authors.forename: C
authors.initials: C
authors.lastname: Schröder
authors.forename: L A
authors.initials: LA
authors.lastname: Soderblom
authors.forename: A
authors.initials: A
authors.lastname: Yen