Advanced search
1 file | 3.00 MB

Morphology and structure of the 1999 lava flows at Mount Cameroon Volcano (West Africa) and their bearings on the emplacement dynamics of volume-limited flows

(2011) GEOLOGICAL MAGAZINE. 148(1). p.22-34
Author
Organization
Abstract
The morphology and structure of the 1999 lava flows at Mount Cameroon volcano are documented and discussed in relation to local and source dynamics. Structures are analysed qualitatively and more detailed arguments are developed on the processes of levee formation and systematic links between flow dynamics and levee-channel interface geometry. The flows have clear channels bordered by four main types of levees: initial, accretionary, rubble and overflow levees. Thermally immature pahoehoe lava units with overflow drapes define the proximal zone, whereas rubble and accretionary levees are common in the distal region bordering thermally mature aa clinker or blocky aa flow channels. Pressure ridges, squeeze-ups and pahoehoe ropes are the prevalent compressive structures. Standlines displayed on clinkery breccias are interpreted to represent levee-channel interactions in response to changing flow levels. These data complement previous knowledge on lava flow morphology, thus far dominated by Etnean and Hawaiian examples.
Keywords
FIELD, PAHOEHOE, Mount Cameroon volcano, lava flows, morphology, KILAUEA VOLCANO, BASALTIC LAVA, ETNA, HAWAII, PETROCHEMISTRY, TRANSITION, EVOLUTION, PETROLOGY

Downloads

  • Morphology structure of 1999 lava flows at Mt Cameroon GeolMag148Suh Wantim22-34 .pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 3.00 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Suh, C Emmanuel, SA Stansfield, RSJ Sparks, MS Njome, Mabel Nechia Wantim, and Gerald Ernst. 2011. “Morphology and Structure of the 1999 Lava Flows at Mount Cameroon Volcano (West Africa) and Their Bearings on the Emplacement Dynamics of Volume-limited Flows.” Geological Magazine 148 (1): 22–34.
APA
Suh, C. E., Stansfield, S., Sparks, R., Njome, M., Wantim, M. N., & Ernst, G. (2011). Morphology and structure of the 1999 lava flows at Mount Cameroon Volcano (West Africa) and their bearings on the emplacement dynamics of volume-limited flows. GEOLOGICAL MAGAZINE, 148(1), 22–34.
Vancouver
1.
Suh CE, Stansfield S, Sparks R, Njome M, Wantim MN, Ernst G. Morphology and structure of the 1999 lava flows at Mount Cameroon Volcano (West Africa) and their bearings on the emplacement dynamics of volume-limited flows. GEOLOGICAL MAGAZINE. 2011;148(1):22–34.
MLA
Suh, C Emmanuel, SA Stansfield, RSJ Sparks, et al. “Morphology and Structure of the 1999 Lava Flows at Mount Cameroon Volcano (West Africa) and Their Bearings on the Emplacement Dynamics of Volume-limited Flows.” GEOLOGICAL MAGAZINE 148.1 (2011): 22–34. Print.
@article{2105231,
  abstract     = {The morphology and structure of the 1999 lava flows at Mount Cameroon volcano are documented and discussed in relation to local and source dynamics. Structures are analysed qualitatively and more detailed arguments are developed on the processes of levee formation and systematic links between flow dynamics and levee-channel interface geometry. The flows have clear channels bordered by four main types of levees: initial, accretionary, rubble and overflow levees. Thermally immature pahoehoe lava units with overflow drapes define the proximal zone, whereas rubble and accretionary levees are common in the distal region bordering thermally mature aa clinker or blocky aa flow channels. Pressure ridges, squeeze-ups and pahoehoe ropes are the prevalent compressive structures. Standlines displayed on clinkery breccias are interpreted to represent levee-channel interactions in response to changing flow levels. These data complement previous knowledge on lava flow morphology, thus far dominated by Etnean and Hawaiian examples.},
  author       = {Suh, C Emmanuel and Stansfield, SA and Sparks, RSJ and Njome, MS and Wantim, Mabel Nechia and Ernst, Gerald},
  issn         = {0016-7568},
  journal      = {GEOLOGICAL MAGAZINE},
  language     = {eng},
  number       = {1},
  pages        = {22--34},
  title        = {Morphology and structure of the 1999 lava flows at Mount Cameroon Volcano (West Africa) and their bearings on the emplacement dynamics of volume-limited flows},
  url          = {http://dx.doi.org/10.1017/S0016756810000312},
  volume       = {148},
  year         = {2011},
}

Altmetric
View in Altmetric
Web of Science
Times cited: