The Cerro Galan Caldera, North-west Argentina and its tectonic setting

Francis, P. W.; Hammill, M.; Kretzschmar, G.A.; Thorpe, R. S.

doi:10.1038/274749a0

Cited by 31 publications

(7 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CGI was erupted from the Cerro Galán caldera (Francis et al 1978(Francis et al , 1989 in the Central Volcanic Zone of the Andes continental margin volcanic arc (Stern 2004) at about 2.08 Ma Figs. 1 and 2).…”

Section: Geological Settingmentioning

confidence: 99%

The flow dynamics of an extremely large volume pyroclastic flow, the 2.08-Ma Cerro Galán Ignimbrite, NW Argentina, and comparison with other flow types

et al. 2011

View full text Add to dashboard Cite

show abstract

Section: Geological Settingmentioning

confidence: 99%

The flow dynamics of an extremely large volume pyroclastic flow, the 2.08-Ma Cerro Galán Ignimbrite, NW Argentina, and comparison with other flow types

et al. 2011

View full text Add to dashboard Cite

show abstract

“…13) (Kay and Coira, 2008). Evidence for delamination comes from Pliocene to Recent ignimbritic eruptions of the Cerro Galan, Argentina (Francis et al, 1978), as well as a concentration of primitive mafic lavas associated with normal and strike-slip faults, high regional elevation, seismic evidence for a thin underlying lithosphere and an abnormally hot subducting slab (Kay et al, 1999).…”

Section: Lower Crustal Delaminationmentioning

confidence: 99%

Crustal redistribution, crust–mantle recycling and Phanerozoic evolution of the continental crust

Clift

Vannucchi

Morgan

2009

Earth-Science Reviews

196

151

View full text Add to dashboard Cite

“…A similar trapdoor caldera is Cerro Galan, Argentina [Francis, 1978], where there is considerable asymmetry, resurgence limited to the shallower side of the caldera, and a caldera lake on the lower (and thicker ?) side of the depression.…”

Section: Caldera Modelmentioning

confidence: 99%

Intracaldera volcanic activity, Toledo Caldera and Embayment, Jemez Mountains, New Mexico

Heiken¹,

Goff²,

Stix³

et al. 1986

J. Geophys. Res.

View full text Add to dashboard Cite

The Toledo caldera was formed at 1.47±0.06 Ma during the catastrophic eruption of the lower member, Bandelier Tuff. The caldera was obscured at 1.12±0.03 Ma during eruption of the equally voluminous upper member of the Bandelier Tuff that led to formation of the Valles caldera. Earlier workers interpreted a 9‐km‐diameter embayment, located NE of the Valles caldera (Toledo embayment), to be a remnant of the Toledo caldera. Drill hole data and new K‐Ar dates of Toledo intracaldera domes redefine the position of Toledo caldera, nearly coincident with and of the same dimensions as the younger Valles caldera. The Toledo embayment may be of tectonic origin or a small Tschicoma volcanic center caldera. This interpretation is consistent with distribution of the lower member of the Bandelier Tuff and with several other field and drilling‐related observations. Explosive activity associated with Cerro Toledo Rhyolite domes is recorded in tuff deposits located between the lower and upper members of the Bandelier Tuff on the northeast flank of the Jemez Mountains. Recorded in the tuff deposits are seven cycles of explosive activity. Most cycles consist of phreatomagmatic tuffs that grade upward into Plinian pumice beds. A separate deposit, of the same age and consisting of pyroclastic surges and flows, is associated with Rabbit Mountain, located on the southeast rim of the Valles‐Toledo caldera complex. These are the surface expression of what may be a thicker, more voluminous intracaldera tuff sequence. The combined deposits of the lower and upper members of the Bandelier Tuff, Toledo and Valles intracaldera sediments, tuffs, and dome lavas form what we interpret to be a wedge‐shaped caldera fill. This sequence is confirmed by deep drill holes and gravity surveys. This fill accumulated in depressions formed during precaldera rifting and episodes of caldera collapse. We interpret the Toledo‐Valles caldera complex to be a pair of nearly coincident trapdoor calderas, with the hinge on the west side and thick caldera fill in the east.

show abstract

The Cerro Galan Caldera, North-west Argentina and its tectonic setting

Cited by 31 publications

References 16 publications

The flow dynamics of an extremely large volume pyroclastic flow, the 2.08-Ma Cerro Galán Ignimbrite, NW Argentina, and comparison with other flow types

The flow dynamics of an extremely large volume pyroclastic flow, the 2.08-Ma Cerro Galán Ignimbrite, NW Argentina, and comparison with other flow types

Crustal redistribution, crust–mantle recycling and Phanerozoic evolution of the continental crust

Intracaldera volcanic activity, Toledo Caldera and Embayment, Jemez Mountains, New Mexico

Contact Info

Product

Resources

About