Results 131 to 140 of about 31,106 (253)

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  

Seismic structure of the continental margin of French Guiana: implications for the rifting and early spreading of the equatorial Atlantic [PDF]

, 2007
Recent studies of passive continental margins suggest that the rifting process produces a variety of structural styles. The along-strike continuity of these rifted margins is punctuated by significant lateral offsets, known as transform margins.
Greenroyd, Christopher J., Greenroyd, Christopher J   +1 more
core  

Active Plume, Abandoned Ridge, or Ancient Slab? olivine‐Hosted Melt Inclusions Record the Mantle Melting Conditions Below the East Pacific Revillagigedo Archipelago, Mexico

Geochemistry, Geophysics, Geosystems
The voluminous active volcanoes of the Revillagigedo Islands of Socorro and San Benedicto in the east Pacific Ocean exhibit hotspot geochemistry. However, the presence of a deep mantle plume has not been seismologically confirmed.
Janne M. Koornneef, Laurens J. J. Tromp, Igor K. Nikogosian, Eva M. Barning, Arwen Deuss, Yamirka Rojas‐Agramonte, Pablo Davilla Harris, Douwe J. J. vanHinsbergen   +7 more
doaj   +1 more source

The significance of plagioclase textures in mid-ocean ridge basalt (Gakkel Ridge, Arctic Ocean). [PDF]

Contrib Mineral Petrol, 2019
Bennett EN, Lissenberg CJ, Cashman KV.
europepmc   +1 more source