A heat flow based cooling model for tectonic plates

Hasterok, Derrick

doi:10.1016/j.epsl.2012.10.036

Cited by 109 publications

(149 citation statements)

References 38 publications

Supporting

Mentioning

134

Contrasting

Unclassified

Order By: Relevance

“…Our estimate of ventilated hydrothermal power for a model with constant thermal properties is similar to the recent analysis of Hasterok (2013a), predicting a net power deficit of 7.8 TW, 34 % of which is extracted near the ridge axis (< 1 My). The effect of axial hydrothermal circulation alone is a higher net power deficit (10 TW), and about 50 % of the hydrothermal heat flux occurs near ridge axes (< 1 My).…”

Section: Resultssupporting

confidence: 69%

“…Age dependence of the subsidence rate -as predicted by models GDH1 (Stein and Stein, 1993), H13 (Hasterok, 2013a) and our models GH and GHC -are shown in Fig. 6a compared to empirical estimates based on the global database of Hillier (2010).…”

Section: The Subsidence Ratementioning

confidence: 99%

“…The first plate model we use is from Hasterok (2013a), referred to here as H13. H13 has constant thermal properties and is thus taken as an optimal model prediction when the effects of thermal insulation and hydrothermal circulation are not considered.…”

Section: Reference Models For Seafloor Heat Flowmentioning

confidence: 99%

“…Such constraints on the heat deficit are critically important for the understanding of numerous chemical and physical processes in the Earth. In addition to providing a direct constraint on the thermal budget of cooling oceanic crust and lithosphere (Mottl, 2003;Hasterok, 2013a), this is also the power available to drive chemical exchange between the crust and oceans (e.g., Seyfried et al, 1984;Spivack and Edmont, 1987;Nicolas et al, 2003;Staudigel, 2014) and to pass nutrients to sub-seafloor microbial communities (e.g., Jannasch, 1983Jannasch, , 1995Hessler et al, 1988;Tunnicliffe, 1991). In addition, the chemical alteration of oceanic crust by hy-drothermal fluids is thought to regulate the chemical budgets of subducting slabs (Schmidt and Poli, 2013;Ryan and Chauvel, 2013).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The hydrothermal power of oceanic lithosphere

Grose

Afonso

2015

Solid Earth

View full text Add to dashboard Cite

Abstract. We have estimated the power of ventilated hydrothermal heat transport, and its spatial distribution, using a set of recently developed plate models which highlight the effects of axial hydrothermal circulation and thermal insulation by oceanic crust. Testing lithospheric cooling models with these two effects, we estimate that global advective heat transport is about 6.6 TW, significantly lower than most previous estimates, and that the fraction of that extracted by vigorous circulation on the ridge axes ( < 1 My old) is about 50 % of the total, significantly higher than previous estimates. These new estimates originate from the thermally insulating properties of oceanic crust in relation to the mantle. Since the crust is relatively insulating, the effective properties of the lithosphere are "crust dominated" near ridge axes (a thermal blanketing effect yielding lower heat flow) and gradually approach mantle values over time. Thus, cooling models with crustal insulation predict low heat flow over young seafloor, implying that the difference of modeled and measured heat flow is due to the heat transport properties of the lithosphere, in addition to ventilated hydrothermal circulation as generally accepted. These estimates may bear on important problems in the physics and chemistry of the Earth because the magnitude of ventilated hydrothermal power affects chemical exchanges between the oceans and the lithosphere, thereby affecting both thermal and chemical budgets in the oceanic crust and lithosphere, the subduction factory, and the convective mantle.

show abstract

Section: Resultssupporting

confidence: 69%

Section: The Subsidence Ratementioning

confidence: 99%

Section: Reference Models For Seafloor Heat Flowmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The hydrothermal power of oceanic lithosphere

Grose

Afonso

2015

Solid Earth

View full text Add to dashboard Cite

show abstract

“…2). (c) Surface heat flow evolution for the four models in (b) compared to present-day heat flow of oceanic lithosphere as a function of age (Hasterok, 2013). The convective vigour controls the asymptotic surface heat flow and depends on mantle viscosity (Solomatov and Moresi, 2000).…”

Section: Overviewmentioning

confidence: 98%

Mantle temperature as a control on the time scale of thermal evolution of extensional basins

Petersen

Armitage

Nielsen

et al. 2015

Earth and Planetary Science Letters

View full text Add to dashboard Cite

Revisiting the structure, age, and evolution of the Wharton Basin to better understand subduction under Indonesia

2014

View full text Add to dashboard Cite

[1] Understanding the subduction processes along the Sunda Trench requires detailed constraints on the subducting lithosphere. We build a detailed tectonic map of the Wharton Basin based on reinterpretation of satellite-derived gravity anomalies and marine magnetic anomalies. The Wharton Basin is characterized by a fossil ridge, dated~36.5 Ma, offset by N-S fracture zones. Magnetic anomalies 18 to 34 (38-84 Ma) are identified on both flanks, although a large part of the basin has been subducted. We analyze the past plate kinematic evolution of the Wharton Basin by two-plate (India-Australia) and three-plate (India-Australia-Antarctica) reconstructions. Despite the diffuse plate boundaries within the Indo-Australian plate for the last 20 Ma, we obtain finite rotation parameters that we apply to reconstruct the subducted Wharton Basin and constrain the thickness, buoyancy, and rheology of the subducting plate. The lower subductability of younger lithosphere off Sumatra has important consequences on the morphology, with a shallower trench, forearc islands, and a significant inward deviation of the subduction system. This deviation decreases in the youngest area, where the Wharton fossil spreading center enters subduction: The discontinuous magmatic crust and serpentinized upper mantle, consequences of the slow spreading rates at which this area was formed, weaken the mechanical resistance to subduction and facilitate the restoration of the accretionary prism. Deeper effects include the possible creation of asthenospheric windows beneath the Andaman Sea, in relation to the long-offset fracture zones, and east of 105°E, as a result of subduction of the spreading center.Citation: Jacob, J., J. Dyment, and V. Yatheesh (2014), Revisiting the structure, age, and evolution of the Wharton Basin to better understand subduction under Indonesia,

show abstract

A heat flow based cooling model for tectonic plates

Cited by 109 publications

References 38 publications

The hydrothermal power of oceanic lithosphere

The hydrothermal power of oceanic lithosphere

Mantle temperature as a control on the time scale of thermal evolution of extensional basins

Revisiting the structure, age, and evolution of the Wharton Basin to better understand subduction under Indonesia

Contact Info

Product

Resources

About