Geologic history of Martian regolith breccia Northwest Africa 7034: Evidence for hydrothermal activity and lithologic diversity in the Martian crust [PDF]
, 2016 The timing and mode of deposition for Martian regolith breccia Northwest Africa (NWA) 7034 were determined by combining petrography, shape analysis, and thermochronology.
Adcock +151 more
core +3 more sources
High- and Ultrahigh-Pressure Metamorphism in the North Qaidam and South Altyn Terranes, Western China [PDF]
, 2007 The North Qaidam and South Altyn terranes extend approximately 1000 km across the northern Tibetan Plateau, and five localities preserve evidence of Early Paleozoic high-pressure (HP) or ultrahigh-pressure (UHP) metamorphism, including the presence of ...
Bird, D. K. +3 more
core +2 more sources
Early Cambrian U-Pb zircon age and Hf-isotope data from the Guasayán pluton, Sierras Pampeanas, Argentina: implications for the northwestern boundary of the Pampean arc [PDF]
, 2016 An Early Cambrian pluton, known as the Guasayán pluton, has been identified in the central area of Sierra de Guasayán, northwestern Argentina. A U?Pb zircon Concordia age of 533 ± 4 Ma was obtained by LA-MC-ICP-MS and represents the first report of ...
Alasino, Pablo Horacio +8 more
core +2 more sources
Geological structure of the Pre-jurassic basement of the Yugansk-Koltogorsk zone of the West Siberia
Литосфера, 2018 Subject of the study. We have carried out an additional exploration on petrography, petrochemistry, geochemistry, geochronology and biostratigraphy of rock complexes of the Yugansk-Koltogorsk (central part of West Siberia). Materials and methods.
Kirill S. Ivanov +4 more
doaj +1 more source
Nature and timing of Late Mississippian to Mid-Pennsylvanian glacio-eustatic sea-level changes of the Pennine Basin, UK [PDF]
, 2012 The Pennine Basin of northern England contains a comparatively complete Serpukhovian– Moscovian succession characterized by high-resolution ammonoid zonation and cyclic paralic sedimentation.
Condon, Daniel J., Waters, Colin N.
core +2 more sources
Tectonic overview of the West Gondwana margin [PDF]
, 2008 The oceanic southern margin of Gondwana, from southern South America through South Africa, West Antarctica, New Zealand (in its pre break-up position), and Victoria Land to Eastern Australia is one of the longest and longest-lived active continental ...
Pankhurst, Robert J., Vaughan, Alan P.M.
core +1 more source
Anais da Academia Brasileira de Ciências, 2003 The integrated investigation of metamorphism and zircon U-Pb SHRIMP geochronology of the Belizário ultramafic amphibolite from southernmost Brazil leads to a better understanding of the processes involved in the generation of the Encantadas Complex ...
Léo A. Hartmann +4 more
doaj +1 more source
Timing of diagenesis and very low-grade metamorphism in the eastern sector of the Sierra de Cameros (Iberian Range, Spain): a U–Pb SHRIMP study on monazite [PDF]
, 2009 The Sierra de Cameros is an intracontinental orogen and represents the north-western part of the Iberian Range in Northern Spain. It comprises a thick sequence of syn-rift continental sediments (mainly sandstones and carbonates) deposited during ...
Aleinikoff +42 more
core +2 more sources
Geochronological and geochemical features of the Cathaysia block (South China): new evidence for the Neoproterozoic breakup of Rodinia [PDF]
, 2011 International audienceThe Cathaysia block is an important element for the reconstruction of the Proterozoic tectonic evolution of South China within the Rodinia supercontinent.
Faure, Michel +3 more
core +3 more sources
Ion microprobe (SHRIMP) dates complex granulite from Santa Catarina, southern Brazil
Anais da Academia Brasileira de Ciências, 2000 Complex polymetamorphic granulites have been dated in the Santa Catarina granulite complex of southern Brazil through SHRIMP study of zircon. This complex is dominated by intermediate-acid plutonic rocks and contains small volumes of mafic and ultramafic
LÉO A. HARTMANN +4 more
doaj +1 more source