Results 121 to 130 of about 31,106 (253)

Specialized Committees of International Organizations an Important Source of Organizational Autonomy

Regulation &Governance, EarlyView.
ABSTRACT Assigning the preparation of decisions to specialized committees composed of member state representatives is a widespread response to the ‘governor's dilemma’, that is, the tension between competence and control, in international organizations (IOs). We theorize a causal mechanism referring to self‐selection and agenda‐setting effects and show
Michael Giesen, Thomas Gehring, Simon Linder, Thomas Rixen   +3 more
wiley   +1 more source

A magnetic study of the west Iberia and conjugate rifted continental margins: constraints on rift-to-/drift processes [PDF]

, 1999
The analysis and modelling of magnetic anomalies at the conjugate rifted continental margins of the southern Iberia Abyssal Plain (TAP) and Newfoundland Basin have revealed that the sources of magnetic anomalies are distinctly different across both each ...
Russell, Simon Mark
core  

Sedimentology of silica granules and haematite in the 3.47 Ga Antarctic Creek Member, Mount Ada Basalt, Western Australia

Sedimentology, EarlyView.
ABSTRACT The Paleoarchean Antarctic Creek Member of the Mount Ada Basalt, Eastern Pilbara Terrane, Western Australia, includes beds of jasper and white chert composed of sand‐sized silica granules that often contain or are mixed with silt‐sized particles of haematite.
Donald R. Lowe, Gary R. Byerly
wiley   +1 more source

Trace element distributions in ridge flank sediments from the east Pacific Rise, and their use as proxies of past ocean conditions

, 2008
The eastern equatorial and tropical Pacific regions are areas of significant carbon fluxes from theatmosphere to the ocean interior. Changes in the function of marine biogeochemical cycles in thisregion potentially exert an important control on global ...
Taylor, Sarah Louise
core  

The Seismic Expression of Core Complex‐Style Extensional Detachment Faults in Rifted Margins

Terra Nova, EarlyView.
ABSTRACT The identification of core complex‐style extensional detachment faults (CCDFs) in rifted margins is crucial for accurately restoring their stratigraphic and thermal histories. Yet recognising CCDFs in seismic reflection images is challenging due to their faint topographic expression; the lack of associated abrupt offset in seismic reflections;
Pauline Chenin, Gianreto Manatschal, Cuimei Zhang, Peng Chao   +3 more
wiley   +1 more source

Emergence of Continents Stabilized the Bioavailability of Boron

Terra Nova, EarlyView.
ABSTRACT Boron is an essential element for the development of life on Earth; borates stabilize ribose in prebiotic reactions and facilitate metabolism in higher plants. There is, however, a relatively narrow surface boron concentration range over which borates stabilize and serve as a micronutrient rather than a toxin.
Brendan V. Dyck, Jon Wade
wiley   +1 more source

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

Abiotic hydrogen (H₂) sources and sinks near the Mid-Ocean Ridge (MOR) with implications for the subseafloor biosphere. [PDF]

Proc Natl Acad Sci U S A, 2020
Worman SL, Pratson LF, Karson JA, Schlesinger WH.   +3 more
europepmc   +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

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