organo–mineral assemblage (Fig.1b). Despite the potentially critical role of interactions between OM forms in shifting the current view of the spatial arrangement of SOM accumulation on mineral surfaces, the chemical composition of these interfaces has not been directly visualized or described in ...
phase mineralephase organiquethe structure and composition of the mineral part, and the compositions of the organic matrices of various fossil bones have been studieddoi:info:doi/10.1016/S0753-3969(98)80006-2Yannicke DauphinAnnales de Paléontologie...
mineral composition / platinum-group elements / sulfide segregation / Wangjiangshan layered intrusion / northern margin of the Yangtze Block 0. 引言 镁铁—超镁铁质层状岩体主要由堆晶矿物组成,与堆晶矿物共存的熔体往往由于层状岩体的压实作用和成分对流作用被排出晶粥(crystal mush)而与堆晶矿物分离...
The former was considered as a continental uplift event in response to the collision between the Bayan Har terrane and the EKOB (Jiang et al., 1992). However, the latest studies suggest the latter marks the collision event, whereas the former represents the initiation of northward subduction ...
minerals any of us will ever see in one place outside the Seaman Museum!Learn more about this Copper specimenhere. Copper on Calcite from Quincy Mine, Quincy Township, Houghton Co., Michigan, USASmall Cabinet, 5.8 x 4.3 x 1.7 cm. Ex. Lucius L. Hubbard; Seaman Mineral Museum; Dr. ...
3A). The mineral composition of the hornblendites varies, particularly in the proportion of garnet, dividing them into hornblendite and garnet hornblendite. Most of the garnet hornblendite pods and lenses commonly have garnet-rich rims and hornblendite-rich cores. Approximately 0.7 vol% sulfide...
‘light’ elements, as candidate impurities of the Fe alloys24. Our results suggest that certain light and heavy elements, which are non-siderophile and volatile, could be potentially become captured into the Earth’s core during metal–silicate segregation, to enrich the chemical composition of ...
Structural complexity of ecosystems is a well-studied field in ecology. This important feature is mainly determined by abiotic characteristics (i.e. mineral composition, topography), biotic structures resulting from the activity of engineer organisms, and ecosystem age (Margalef, 1963, Loya, 1972, Jo...
Although craton margins globally control the formation and preservation of a diverse range of mineral deposits, China represents the premier example in terms of metal endowment due to the anomalous length of its craton margins combined with their abnormally complex tectonic history. Keywords: Craton ...
s enigmatic cloud-layer SO2-depletion being caused by life. We here couple each proposed energy-metabolism to a photochemical-kinetics code and self-consistently predict the composition of Venus’s atmosphere under the scenario that life produces the observed SO2-depletion. Using this photo-bio-...