Second-stage Caribbean Large Igneous Province volcanism: The depleted Icing on the enriched Cake

Dürkefälden, Antje; Hoernle, Kaj; Hauff, Folkmar; Werner, Reinhard; Garbe‐Schönberg, Dieter

doi:10.1016/j.chemgeo.2019.01.004

Cited by 20 publications

(9 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At 85 Ma in the Whattam and Stern (2015) model, the CLIP is surrounded on all sides by inwardfacing subduction zones. The proposed MTZ origin of the CLIP plume readily accommodates the observations previously attributed to back arc upwelling or late upwelling of CLIP mantle in response to crustal thinning (Whattam and Stern, 2015;Dürkefälden et al, 2019). Moreover, in the MTZ model, the reason that the Galapagoes Hot Spot location through time does not match the CLIP is because it was not actually involved in the formation of many of the terranes commonly attributed to a single LIP.…”

Section: Gorgona Island Komatiitessupporting

confidence: 68%

“…komatiitic volcanism being among the youngest events (Serrano et al, 2011). Dürkefälden et al (2019) suggested that depleted ∼81 Ma magmas of the Nicaraguan Rise, located between Central America and the Greater Antilles, represent upwelling of still hot CLIP mantle in response to crustal thinning. As summarized by Whattam and Stern (2015), however, there is significant spatial and temporal overlap between plume-and arc-type lavas with no clear hiatus between them.…”

Section: Gorgona Island Komatiitesmentioning

confidence: 99%

See 1 more Smart Citation

Komatiites From Mantle Transition Zone Plumes

Wyman

2020

Front. Earth Sci.

View full text Add to dashboard Cite

During the Archean, episodic volcanism commonly included both plume-and arctype magmatism, raising the issue of a possible link between "bottom up" and "top down" geodynamic processes. Rather than plume-initiated subduction, the bestpreserved cratons demonstrate that komatiitic magmatism postdated at least some of the subduction linked volcanism. Several factors suggest that komatiite-generating plumes were sourced in the mantle transition zone. Komatiites contain 0.6 wt.% or more H 2 O, which is contrary to earlier predictions for plume ascent through the transition zone. Geodynamic reconstructions indicate that multiple subducted slabs penetrated the transition zone in the region of future plume ascent and the related trench configurations limit the size of any associated plume heads. The implied plume head sizes are inconsistent with those required for a plume to ascend from the core-mantle boundary but match those predicted for plumes sourced from the lower transition zone. Transition zone plumes have mainly been advocated for in post-Archean "big wedge" scenarios involving subducted slabs that stall at the base of the transition zone but they are also an outcome of the "basalt barrier" featured in some geodynamic models for the Archean and early Proterozoic. The latter models suggest the basaltic components of Archean subducted slabs were too buoyant to descend into the lower mantle and formed a boundary layer that isolated the upper mantle and lower mantle on the early Earth, except in times of mantle overturns. The basalt barrier was a significant thermal boundary layer that, in principle, could act as the nucleation site of upwelling plumes anywhere on the globe. The evidence discussed here, however, suggests that the mainly peridotitic mantle upwellings were enhanced by the nearby injection of closely associated slabs into the transition zone. The simplicity of the Mantle Transition Zone (MTZ) plume-forming mechanism ensured that komatiites could be generated throughout the Archean even as Earth moved toward a regime involving modernstyle subduction, globe-encompassing oceanic ridge systems and tectonic plates. The distinctive geodynamic setting of Gorgona Island produced relatively low-temperature komatiites at the only place along the margin of North and South America where it was possible to reproduce the bowl-like subduction configurations commonly associated with their Archean and Paleoproterozoic counter parts.

show abstract

Section: Gorgona Island Komatiitessupporting

confidence: 68%

Section: Gorgona Island Komatiitesmentioning

confidence: 99%

Komatiites From Mantle Transition Zone Plumes

Wyman

2020

Front. Earth Sci.

View full text Add to dashboard Cite

show abstract

“…The Caribbean Plateau formed during the Late Cretaceous as a result of two main magmatic events at ∼89 and ∼75 Ma (Dürkefälden et al, 2019a(Dürkefälden et al, , 2019b. Following the plateau formation, a volcanic arc developed at the Aves Ridge and remained active until ∼59 Ma (J. E. Wright & Wyld, 2011).…”

Section: Late Cretaceous To Paleocene: Pre-rift Evolutionmentioning

confidence: 99%

Genetic Relations Between the Aves Ridge and the Grenada Back‐Arc Basin, East Caribbean Sea

et al. 2021

View full text Add to dashboard Cite

The Grenada Basin is bounded to the east by the active Lesser Antilles Arc, to the west by the north-south trending Aves Ridge, commonly described as a Cretaceous-Paleocene remnant of the "Great Arc of the Caribbean" (Burke, 1988), and to the south by the transpressional plate boundary with South America (Figure 1). This setting led previous authors to propose various models for the origin of the Grenada Basin, most of them assuming the basin to be at least partly floored by oceanic crust that was formed during the

show abstract

“…The Chortìs block is a Precambrian Craton that comprises much of Central America and extends into the marine setting in the form of the Nicaraguan Rise. The eastern extent is not well known, however, samples from the Lower Nicaraguan Rise have been inferred to be of CLIP origin (Case, 1991;Dürkefälden, Hoernle, Hauff, Werner, & Garbe-Schönberg, 2019;Mauffret & Leroy, 1997), suggesting the eastern limit may be along the Pedro Bank fault zone, which separates the Lower and Upper Nicaraguan Rise (James, 2007;Lewis et al, 2011;Sanchez et al, 2019). Seismic refraction surveys have shown the Upper Nicaraguan Rise has a crustal thickness of 20-25 km (Edgar et al, 1971), compared to 15-20 km for the Lower Nicaraguan Rise (Mauffret & Leroy, 1997).…”

Section: Geological Settingmentioning

confidence: 99%