Composition of the oceanic crust. In: Holland, H.D., and Turekian, K. (eds.), Treatise on geochemistry set (Second Edition), Elsevier Science Imprint, 4: 457-496.White W. M. and Klein E. M. (2013) Composition of the Oceanic Crust. In Treatise on Geochemistry: Second Edition ...
However, if intrusives are prevalent in the crust, then their alteration is a major source of 18O to the ocean. Estimates of the volumes of materials involved in the formation and alteration of the oceanic crust (1 km of hydrothermally altered rock, 600 m of weathered rock), cycling of ...
What is the oceanic crust always doing? What type of rock is found under the continents? Oceanic crust is formed of how many layers? What continents made up Gondwana? What is the most common rock in the Earth's crust? What are the characteristics of the oceanic crust?
Learn about the oceanic crust, including the oceanic crust definition, oceanic crust thickness and density, oceanic crust composition, and other...
The low-lying oceanic crust is thin(,7 km on average), composed ofrelatively denserock types such as basalt and is young (#200 Maold) (see Chapter 3.13). In contrast, the high-standing continental crustis thick(,40 kmonave-rage), is composed of highly diverse lithologies(virtually every...
The mineralogy of the oceanic basalt source region is examined by testing whether a peridotite mineralogy can yield observed whole-rock and olivine compositions from (1) the Hawaiian Islands, our type example of a mantle plume, and (2) the Siqueiros Transform, which provides primitive samples of...
The data suggest that the order of trace-element incompatibility in oceanic basalts is ... Sun,McDonough - 《Geological Society London Special Publications》 被引量: 2.7万发表: 1989年 Composition of the Continental Crust Geological, geophysical and geochemical evidence for lower crustal delamination ...
Gao China University of Geosciences, Wuhan, People’s Republic of China and Northwest University, Xi’an, People’s Republic of China 3.01.1 INTRODUCTION 3.01.1.1 What is the Continental Crust? 3.01.1.2 The Importance of Determining Crust Composition 3.01.2 THE UPPER CONTINENTAL CRUST 3.01.2.1 ...
Oceanic Core Complexmid-ocean ridgeslow spreadingmegamulliongeochemistry[1] The thickness and continuity of oceanic crust is variable. Slow-spreading ridge segments often contain areas of amagmatic or tectonic extension, exposing areas of lower-crust and upper-mantle, and having little or no recent ...
The data suggest that the order of trace-element incompatibility in oceanic basalts is ... Sun,McDonough - 《Geological Society London Special Publications》 被引量: 2.7万发表: 1989年 Composition of the Continental Crust Geological, geophysical and geochemical evidence for lower crustal delamination ...