Results 131 to 140 of about 111,627 (352)

Contact metamorphism of a basic igneous rock [PDF]

, 1900
Ulysses Sherman Grant
openalex   +1 more source

The nature and formation of silica minerals in eucrite meteorites: Insight into the protoplanetary magma crystallization

Meteoritics &Planetary Science, EarlyView.
Abstract Silica polymorphs in meteorites provide critical constraints on crystallization processes associated with thermal activity in the early solar system. A detailed investigation of silica polymorphs in eucrites (the largest group of achondrites) using cathodoluminescence imaging and laser‐Raman spectroscopy revealed significant variations in the ...
Rei Kanemaru, Akira Yamaguchi, Naoya Imae, Ryoga Maeda, Makoto Kimura, Kenji Horie, Takashi Mikouchi, Masaaki Miyahara, Masahiro Yasutake, Atsushi Takenouchi, Haruka Ono, Aiko Nakato, Junko Isa, Tomohiro Usui, Hirotsugu Nishido   +14 more
wiley   +1 more source

Vapor flux and recrystallization during dry snow metamorphism under a steady temperature gradient as observed by time-lapse micro-tomography

, 2012
Dry snow metamorphism under an external temperature gradient is the most common type of recrystallization of snow on the ground. The changes in snow microstructure modify the physical properties of snow, and therefore an understanding of this process is ...
B. Pinzer, M. Schneebeli, T. Kaempfer
semanticscholar   +1 more source

A contribution to the study of contact metamorphism [PDF]

, 1899
J. Morgan Clements
openalex   +1 more source

Löpönvaara: A new phosphorus‐rich iron meteorite from Finland

Meteoritics &Planetary Science, EarlyView.
Abstract Löpönvaara is a rare new phosphorus‐rich iron meteorite find from Löpönvaara, Finland. The ~164 g meteorite was discovered in 2017 from the same area as the ungrouped Lieksa pallasite. Löpönvaara was classified as an ungrouped iron meteorite due to its unusually high concentration of P (>4 wt%), coupled with a moderate concentration of Ni (~11 
Laura Kotomaa, Markku Väisänen, Jussi S. Heinonen, Ermei Mäkilä, Hugh O'Brien, Arto Peltola   +5 more
wiley   +1 more source

Editorial: Permian-Triassic Tethyan orogeny along the southern Eurasian margin

Frontiers in Earth Science, 2023
Mingcai Hou, Fuhao Xiong, Changqian Ma, Gillian R. Foulger, Shengyao Yu   +4 more
doaj   +1 more source

Aspects of the taphonomy of the Cambrian Explosion in North Greenland [PDF]

, 2017
This thesis describes and elucidates the taphonomic pathways responsible for the exceptional preservation of some of the most common elements of the Sirius Passet Lagerstätte (early Cambrian), North Greenland.
STRANG, KATIE,MARGARET
core  

Thermal Alteration of Labile Elements in Carbonaceous Chondrites

, 2018
Carbonaceous chondrite meteorites are some of the oldest Solar System planetary materials available for study. The CI group has bulk abundances of elements similar to those of the solar photosphere.
Andronikov, Alexandre, Blum, Joel D., Goreva, Yulia S., Klaue, Bjoern, Lauretta, Dante S., Springmann, Alessondra, Steckloff, Jordan K.   +6 more
core   +1 more source

An interesting case of contact metamorphism [El Paso Range, California] [PDF]

, 1897
Harold W. Fairbanks
openalex   +1 more source

A Role for High Mobility Group Box 1 (HMGB1) Release in the Pathogenesis of Gastroesophageal Reflux Disease

Neurogastroenterology &Motility, EarlyView.
Incubation of esophageal epithelial cells with a weakly acidic (pH 5) bile salt (deoxycholic acid) induces translocation of HMGB1 from the nucleus to the cytosol, and its subsequent release from the cell. This process can be ameliorated by pre‐treatment with the antioxidant, curcumin.
Tom Leech, David Kelsell, Diana Blaydon, Philip Woodland, Madusha Peiris   +4 more
wiley   +1 more source