Results 131 to 140 of about 31,172 (296)

The geodynamics of plume-influenced mid-ocean ridges: insights from the Foundation Segment of the Pacific-Antarctic Ridge

Frontiers in Earth Science
The intersection of the Foundation Plume with the Pacific-Antarctic Ridge is a key location in global geodynamics where a mantle plume is approached by and interacting with a fast-spreading mid-ocean ridge.
Philipp A. Brandl, Christoph Beier, Karsten M. Haase, Felix S. Genske, Folkmar Hauff, Marcel Regelous, Colin W. Devey, Lars H. Rüpke   +7 more
doaj   +1 more source

Hydrothermal sediments record changes in deep water oxygen content in the SE Pacific

, 2010
The distribution of redox?sensitive metals in sediments is potentially a proxy for past ocean ventilation and productivity, but deconvolving these two major controls has proved difficult to date.
John Thomson, Heiko Pälike, Mills, R.A., Pälike, H., Rachel A. Mills, Taylor, S.L., Sarah L. Taylor, Thomson, John   +7 more
core   +1 more source

Large-scale groundwater flow and sedimentary diagenesis in continental shelves influence marine chemical budgets

Nature Communications
The major ion chemistry of the ocean has been assumed to be controlled by river input, hydrothermal circulation at mid-ocean ridges, carbonate production, and low-temperature alteration of seafloor basalt, but marine chemical budgets remain difficult to ...
Alicia M. Wilson, Andrew Osborne, Scott M. White   +2 more
doaj   +1 more source

Solid Earth Carbon Degassing and Sequestration Since 1 Billion Years Ago

Geochemistry, Geophysics, Geosystems
Solid Earth CO2 outgassing, driven by plate tectonic processes, is a key driver of carbon cycle models. However, the magnitudes and variations in outgassing are poorly constrained in deep‐time.
R. Dietmar Müller, Adriana Dutkiewicz, Sabin Zahirovic, Andrew S. Merdith, Christopher R. Scotese, Benjamin J. W. Mills, Lauren Ilano, Ben Mather   +7 more
doaj   +1 more source

EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC

Геодинамика и тектонофизика
Based on the data from the Arctic regional seismic stations, the article presents the results of studying the swarm seismicity of the Gakkel Mid-Ocean Ridge, located in the Arctic Ocean.
А. N. Morozov, N. V. Vaganova, Y. A. Mikhailova, Е. R. Morozova, I. V. Starkov   +4 more
doaj   +1 more source

MORPHOSTRUCTURE OF ATLANTIC’S BOTTOM AND MEDIUM ATLANTIC RIDGE

Геологія і корисні копалини Світового океану, 2019
The purpose of the study is to characterize the morphostructure and geology of Atlantic's bottom and the Mid Atlantic Ridge using generalized and new data. The basis is the bathymetric map of the Atlantic 1971, according to research data of the Institute
A.M. Zhirnov
doaj   +1 more source

Mantle pseudo-isochrons revisited

The 2.0 Ga pseudo-isochron age inferred from the mid-ocean ridge basalt 207Pb/204Pb against 206Pb/204Pb diagram is reexamined on the basis of a statistical box model of mantle processes.
Rudge, J. F.
core   +1 more source

Letter. Late cretaceous seasonal ocean variability from the arctic

, 2009
The modern Arctic Ocean is regarded as barometer of global change and amplifier of global warming1 and therefore records of past Arctic change are of a premium for palaeoclimate reconstruction.
Kemp, Alan E.S., Kemp, Alan E. S., Davies, Andrew, Jennifer Pike, Pike, Jennifer, Alan E. S. Kemp, Andrew Davies   +6 more
core   +1 more source

The carbon isotopic signature of the upper mantle is heterogeneous

Communications Earth & Environment
Knowledge of the carbon isotopic (δ13C) signature of the mantle source region of mid–ocean ridge basalts, is key to understanding carbon cycling on a planetary scale.
Yves Moussallam, Kenneth T. Koga, Estelle F. Rose–Koga, Cyril Aubaud, Hyun Joo Lee, Guillaume Georgeais   +5 more
doaj   +1 more source

Surface ocean circulation and organic carbon export across the mid-Pleistocene climate transition [PDF]

, 2004
The mid-Pleistocene climate transition (MPT) marks a change in the nature of the climate system response to external forcing by insolation. This is represented first by the expansion of the northern hemisphere ice-sheets ca. 920 ka, and the emergence and
McClymont, Erin Louise
core