Results 91 to 100 of about 908,025 (260)

Saline fluids play a major role in continental crust formation

Frontiers in Earth Science
A new general perspective on the long-standing problem of continental crust formation is presented in this study. Unlike prevailing models for continental crust formation that rely heavily on the behavior of major and trace elements in silicate melts in ...
Paterno R. Castillo
doaj   +1 more source

Chemical alteration of the oceanic crust

Geologische Rundschau, 1989
The alteration of the upper oceanic crust through sea water-basement rock interaction produces different and distinct alteration zones with increasing depth. The zonation generally shows a consistent worldwide pattern.
openaire   +3 more sources

A Common Reference Material for Mass‐Dependent Sn Isotope Compositions: An Inter‐Laboratory Calibration Approach

Geostandards and Geoanalytical Research, EarlyView.
Key Points We recommend using the notation δ122/118SnNIST SRM 3161a for mass‐dependent Sn isotope data. We derived conversion factors relative to NIST SRM 3161a for Puri Sn CEZA (0.132 ± 0.011‰), Sn Lyon (0.229 ± 0.016‰), Sn IPGP (0.162 ± 0.018‰). Tin isotope compositions are presented for SPEX CertiPrep Sn and nine USGS reference materials.
Aurélia C.E. Meister, Manuela A. Fehr, Quentin Amet, Gerhard Brügmann, Caroline Fitoussi, Matthias Friebel, Weiqiang Li, Frederic Moynier, Jia‐Xin She, Xueying Wang, Maria Schönbächler   +10 more
wiley   +1 more source

Timing of Metamorphism and Deformation in the Neoarchean Quetico Metasedimentary Belt, Superior Craton, Constrained by Garnet Trace‐Element Mapping and Lu–Hf Geochronology

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The Quetico subprovince of the Superior Province is among the largest metasedimentary belts globally and provides evidence of tectonic processes at play during the final stages of Archean cratonization. Although previous studies have shown that deformation and metamorphism of the 2.7‐Ga turbiditic protolith resulted in regional subvertical ...
Adrian G. Rehm, Antoine Godet, Doug Tinkham, Carl Guilmette, Matthijs A. Smit   +4 more
wiley   +1 more source

Life strategies for Aminicenantia in subseafloor oceanic crust. [PDF]

ISME J, 2023
Booker AE, D'Angelo T, Adams-Beyea A, Brown JM, Nigro O, Rappé MS, Stepanauskas R, Orcutt BN.   +7 more
europepmc   +1 more source

Garnet–Clinopyroxene Double‐Layered Coronae in a Metagabbronorite From the High‐Grade Metamorphic Gföhl Unit, Moldanubian Zone

Journal of Metamorphic Geology, EarlyView.
ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum, Tereza Nemeškalová, Martin Racek, Vojtěch Janoušek, Julian Portenkirchner, Rainer Abart   +5 more
wiley   +1 more source

Tracing fluid infiltration into oceanic crust up to ultra-high-pressure conditions. [PDF]

Contrib Mineral Petrol, 2023
Rubatto D, Williams M, Markmann TA, Hermann J, Lanari P.   +4 more
europepmc   +1 more source

Cold comfort for change: Stream mats as biological indicators of ecosystem processes in the McMurdo Dry Valleys, Antarctica

Journal of Phycology, EarlyView.
Abstract Glacier‐fed streams (GFSs) make ideal systems for studying climate‐related changes. Some of the best‐studied GFSs are found in the McMurdo Dry Valleys (MDVs) of Antarctica, one of the Earth's coldest and driest deserts. Despite their harsh and isolated nature, MDV GFSs represent an oasis of life in a landscape visually devoid of it, with ...
Tyler J. Kohler, Ian Hawes, Adrian Howkins, Lydia H. Zeglin, Mike N. Gooseff, Diane M. McKnight   +5 more
wiley   +1 more source

Reply to Zou et al.: Neoarchean eclogite-facies oceanic crust in the North China Craton. [PDF]

Proc Natl Acad Sci U S A, 2022
Ning W, Kusky T, Wang L, Huang B.
europepmc   +1 more source

An updated classification of growth forms in non‐geniculate coralline algae (Corallinophycidae, Rhodophyta)

Journal of Phycology, EarlyView.
Abstract The current challenge of defining growth forms in the non‐geniculate coralline red algae was addressed. Since the 19th century, those who have worked on this large and globally distributed group of algae have tried to summarize and systematically describe their growth forms. This effort resulted in a plethora of terms, which could sometimes be
Gavin W. Maneveldt, Juliet Brodie, Martha S. Calderon, Guillermo Diaz‐Pulido, Paul W. Gabrielson, Aki Kato, Line Le Gall, Clio Maridakis, Patrick T. Martone, Isabella Moro, Robert J. Mrowicki, Wendy A. Nelson, Viviana Peña, Fabio Rindi, Florence Rousseau, Tom Schils, Jakop Schwoerbel, Frederico T. S. Tâmega, Riccardo Trentin   +18 more
wiley   +1 more source