Journal ArticleDOI
Mantle plumes control magnetic reversal frequency
Roger L. Larson,Peter Olson +1 more
TLDR
In this article, the authors suggest that mantle plumes control magnetic reversal frequency by the following sequence of events, which increases core cooling by allowing heat to be conducted more rapidly across the core/mantle boundary.About:
This article is published in Earth and Planetary Science Letters.The article was published on 1991-12-01. It has received 265 citations till now. The article focuses on the topics: Outer core & Core–mantle boundary.read more
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A model for the global variation in oceanic depth and heat flow with lithospheric age
Carol A. Stein,Seth Stein +1 more
TL;DR: In this paper, the authors proposed a joint fitting of heat flow and bathymetry with a model with a hotter, thinner oceanic lithosphere than in previous models, including those from older lithosphere previously treated as anomalous.
Journal ArticleDOI
Large igneous provinces: crustal structure, dimensions, and external consequences
Millard F. Coffin,Olav Eldholm +1 more
TL;DR: In this article, the authors compile all known in situ LIPs younger than 250 Ma and analyze dimensions, crustal structures, ages, and emplacement rates of representatives of the three major LIP categories: Ontong Java and Kerguelen-Broken Ridge oceanic plateaus, North Atlantic volcanic passive margins, and Deccan and Columbia River continental flood basalts Crustal thickness ranges from 20 to 40 km, and the lower crust is characterized by high (70-76 km s?1) compressional wave velocities.
Journal ArticleDOI
The phosphorus cycle, phosphogenesis and marine phosphate-rich deposits
TL;DR: In this article, a compilation of marine sedimentary phosphorus burial rates for the last 160 Myr suggests that natural variations have occurred that span one order of magnitude, which suggests that uniform interpretations with respect to the emplacement of major phosphorite deposits should be treated with caution.
Journal ArticleDOI
Seawater Strontium Isotopes, Oceanic Anoxic Events, and Seafloor Hydrothermal Activity in the Jurassic and Cretaceous
TL;DR: In this article, the authors investigated the possible causes of negative seawater strontium-isotope excursions (shifts to lower 87 Sr/86 Sr values) during the Jurassic and Cretaceous that were of relatively short duration (5-13 my) and showed a relatively quick recovery to pre-excursion 87 Sr / 86 Sr ratios.
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Simultaneous generation of hotspots and superswells by convection in a heterogeneous planetary mantle
TL;DR: In this paper, the authors conducted laboratory experiments on thermochemical convection in a fluid with stratified density and viscosity and found that for intermediate density contrasts, a "doming" regime of convection is observed, in which hot domes oscillate vertically through the whole layer while thin tubular plumes rise from their upper surfaces.
References
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Journal ArticleDOI
Magmatism at rift zones: The generation of volcanic continental margins and flood basalts
Robert S. White,Dan McKenzie +1 more
TL;DR: In this paper, the authors show that the production of magmatically active rifted margins and the effusion of flood basalts onto the adjacent continents can be explained by a simple model of rifting above a thermal anomaly in the underlying mantle.
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Flood Basalts and Hot-Spot Tracks: Plume Heads and Tails
TL;DR: Continental flood basalt eruptions have resulted in sudden and massive accumulations of basaltic lavas in excess of any contemporary volcanic processes, thought to result from deep mantle plumes.
Journal ArticleDOI
Hotspots and Mantle Plumes' Some Phenomenology
TL;DR: In this article, the authors examined the available data, mainly topography, geoid, and heat flow, describing hotspots worldwide to constrain the mechanisms for swell uplift and to obtain fluxes and excess temperatures of mantle plumes.
Book
A Geologic time scale 1989
TL;DR: The magnetostratigraphic time scale as mentioned in this paper has been used for the calibration of stage boundaries in the last few decades and has been shown to be useful in the measurement of geologic events.
Journal ArticleDOI
Latest pulse of Earth: Evidence for a mid-Cretaceous superplume
TL;DR: For the past 150 m.y. as mentioned in this paper, a 50% to 75% increase in ocean crust formation rate between 120 and 80 Ma was seen both in spreading-rate increases from ocean ridges and in the age distribution of oceanic plateaus.