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Spatial and alignment analyses for a field of small volcanic vents south of Pavonis Mons and implications for the Tharsis province, Mars

Bleacher, Jacob and Glaze, Lori and Greeley, Ron and Hauber, Ernst and Baloga, Stephen and Sakimoto, Susan and Williams, David and Glotch, Timothy (2009) Spatial and alignment analyses for a field of small volcanic vents south of Pavonis Mons and implications for the Tharsis province, Mars. Journal of Volcanology and Geothermal Research (185), pp. 96-102. Elsevier. DOI: 10.1016/j.jvolgeores.2009.04.008

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Abstract

A field of small volcanic vents south of Pavonis Mons was mapped with each vent assigned a two-dimensional data point. Nearest neighbor and two-point azimuth analyses were applied to the resulting location data. Nearest neighbor results show that vents within this field are spatially random in a Poisson sense, suggesting that the vents formed independently of each other without sharing a centralized magma source at shallow depth. Two-point azimuth results show that the vents display north-trending alignment relationships between one another. This trend corresponds to the trends of faults and fractures of the Noachian-aged Claritas Fossae, which might extend into our study area buried beneath more recently emplaced lava flows. However, individual elongate vent summit structures do not consistently display the same trend. The development of the volcanic field appears to display tectonic control from buried Noachian-aged structural patterns on small, ascending magma bodies while the surface orientations of the linear vents might reflect different, younger tectonic patterns. These results suggest a complex interaction between magma ascension through the crust, and multiple, older, buried Tharsis-related tectonic structures.

Item URL in elib:https://elib.dlr.de/59798/
Document Type:Article
Title:Spatial and alignment analyses for a field of small volcanic vents south of Pavonis Mons and implications for the Tharsis province, Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bleacher, JacobNASA Goddard Space Flight CenterUNSPECIFIED
Glaze, LoriNASA Goddard Space Flight CenterUNSPECIFIED
Greeley, RonArizona State UniversityUNSPECIFIED
Hauber, ErnstUNSPECIFIEDUNSPECIFIED
Baloga, StephenProxemy ResearchUNSPECIFIED
Sakimoto, SusanUniversity of Notre DameUNSPECIFIED
Williams, DavidArizona State UniversityUNSPECIFIED
Glotch, TimothyStony Brook UniversityUNSPECIFIED
Date:2009
Journal or Publication Title:Journal of Volcanology and Geothermal Research
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.jvolgeores.2009.04.008
Page Range:pp. 96-102
Publisher:Elsevier
Status:Published
Keywords:Mars, volcanism, magma chamber, shields, Tharsis
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt MARS-EXPRESS / HRSC (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Hauber, Ernst
Deposited On:26 Aug 2009 11:37
Last Modified:08 Mar 2018 19:02

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