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Ancient Sharks Likely More Diverse Than Previously Thought（图）
Ancient Sharks More Diverse Previously Thought
2018/1/31
Sharks have a reputation as ravenous hunters and apex predators, but new analysis of fossil records shows that some of the earliest sharks might have been filter feeders, taking in water through their...
Frank Richter earns Hess Medal for diverse spectrum of geological contributions
Frank Richter Hess Medal diverse spectrum geological contributions
2009/12/31
The University of Chicago’s Frank Richter, SM’71, PhD’72, has received the 2009 Harry H. Hess Medal for outstanding research on the constitution and evolution of Earth and its sister planets.“Frank’s ...
Geochemistry and Tectonic Environment of Diverse Magma Generations Forming the Crustal Units of the Kızıldağ (Hatay) Ophiolite, Southern Turkey
suprasubduction zone island arc tholeiite boninite fore-arc Turkey
2009/7/7
The Kızıldağ (Hatay) ophiolite is one of the best preserved Neotethyan oceanic lithospheric remnants in southern Turkey. It is represented by, from bottom to top, mantle tectonites, ult...
Scan Electron Micrographs of Kaolins Collected from Diverse Environments of Origin—V. Kaolins Collected in Australia and Japan on Field Trips of the Sixth and Seventh Clay Conferences
Scan Electron Micrographs Kaolins Diverse Environments Seventh Clay Conferences
2012/2/13
Scan electron micrographs are shown of the textures of flint clays, tonsteins, kaolin associated with combustion-metamorphism, sedimentary kaolin, and dickite from the Sydney Basin of Australia. The t...
Scan Electron Micrographs of Kaolins Collected from Diverse Origins—III. Influence of Parent Material on Flint Clays and Flint-Like Clays
Scan Electron Micrographs Kaolins Diverse Origins Flint-Like Clays
2012/2/13
The nature of the parent material from which flint clay or flint-like clay is derived may modify the texture of the clay as observed by SEM. Flint clays occurring in Pennsylvanian-age swamp basins int...
Scan Electron Micrographs of Kaolins Collected from Diverse Environments of Origin—II
Scan Electron Micrographs Kaolins Diverse Environments Origin—II
2012/2/13
Scan electron micrographs (SEM) show the textures of ball clay, plastic refractory clay, flint clay, and of kaolins from Cornwall, U.K., and Brittany, France. The texture of ball clay is a swirl and r...
Scan Electron Micrographs of Kaolins Collected from Diverse Environments of Origin—I
Scan Electron Micrographs Kaolins Diverse Environments Origin—I
2012/2/13
Scan electron micrographs are shown of (1) kaolinite and dickite which crystallized from solution within cavities, (2) kaolinite weathered from clastic primary silicate material, (3) residual kaolinit...