Volcanic and structural history of the rocks exposed at Pickering Crater (Daedalia Planum, Mars)

Caprarelli, G; Leitch, EC

Volcanic and structural history of the rocks exposed at Pickering Crater (Daedalia Planum, Mars)

Caprarelli, G

Leitch, EC

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Publication Type:: Journal Article
Citation:: Icarus, 2009, 202 (2), pp. 453 - 461
Issue Date:: 2009-08-01

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Field	Value	Language
dc.contributor.author	Caprarelli, G https://orcid.org/0000-0001-9578-3228	en_US
dc.contributor.author	Leitch, EC	en_US
dc.date.issued	2009-08-01	en_US
dc.identifier.citation	Icarus, 2009, 202 (2), pp. 453 - 461	en_US
dc.identifier.issn	0019-1035	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8353
dc.description.abstract	In the western hemisphere of Mars Amazonian volcanism from Arsia Mons produced the smooth surfaces of Daedalia Planum and masks older rocks. Close to the southern termination of Daedalia Planum basement rocks are exposed in which are preserved craters that escaped or were only partially filled by this most recent volcanism. Pickering Crater is an approximately 130 km diameter crater. The youngest lavas flowed into this crater from Daedalia Planum by way of a NW rim breach, covering its western part. East of a well-defined flow front an older lava sequence with a distinctive platy surface and derived from a more proximal unestablished source to the northeast is exposed. Several units are identified within this sequence on the basis of surface texture, which is more subdued in progressively older rocks. Only local mapping of the flow front boundaries of these units is possible because of incomplete coverage by high resolution imagery. During emplacement of the older lavas a NE-SW striking en echelon graben system and parallel smaller troughs and dikes formed under inferred regional NW-SE extension. A much earlier strike-slip regime pre-dating the lavas exposed in the crater floor is postulated, based on the highly fretted nature of the rim of Pickering Crater and an elongated smaller crater to its northeast, approximately 40 km long in the NE-SW direction. The rims of these craters contrast with that of a smoother rimmed impact crater in the southeast that was excavated subsequent to strike-slip deformation but prior to the emplacement of platy surfaced lavas. © 2009 Elsevier Inc. All rights reserved.	en_US
dc.relation.ispartof	Icarus	en_US
dc.relation.isbasedon	10.1016/j.icarus.2009.02.021	en_US
dc.subject.classification	Astronomy & Astrophysics	en_US
dc.title	Volcanic and structural history of the rocks exposed at Pickering Crater (Daedalia Planum, Mars)	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	202	en_US
utslib.for	040302 Extraterrestrial Geology	en_US
utslib.for	0201 Astronomical and Space Sciences	en_US
utslib.for	0402 Geochemistry	en_US
utslib.for	0404 Geophysics	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	202	en_US

Abstract:

In the western hemisphere of Mars Amazonian volcanism from Arsia Mons produced the smooth surfaces of Daedalia Planum and masks older rocks. Close to the southern termination of Daedalia Planum basement rocks are exposed in which are preserved craters that escaped or were only partially filled by this most recent volcanism. Pickering Crater is an approximately 130 km diameter crater. The youngest lavas flowed into this crater from Daedalia Planum by way of a NW rim breach, covering its western part. East of a well-defined flow front an older lava sequence with a distinctive platy surface and derived from a more proximal unestablished source to the northeast is exposed. Several units are identified within this sequence on the basis of surface texture, which is more subdued in progressively older rocks. Only local mapping of the flow front boundaries of these units is possible because of incomplete coverage by high resolution imagery. During emplacement of the older lavas a NE-SW striking en echelon graben system and parallel smaller troughs and dikes formed under inferred regional NW-SE extension. A much earlier strike-slip regime pre-dating the lavas exposed in the crater floor is postulated, based on the highly fretted nature of the rim of Pickering Crater and an elongated smaller crater to its northeast, approximately 40 km long in the NE-SW direction. The rims of these craters contrast with that of a smoother rimmed impact crater in the southeast that was excavated subsequent to strike-slip deformation but prior to the emplacement of platy surfaced lavas. © 2009 Elsevier Inc. All rights reserved.

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http://hdl.handle.net/10453/8353