Results 81 to 90 of about 299,133 (214)

Petrogenesis and Tectonic Implication of the Newly Identified Rhyacian and Orosirian Orthogneisses in the Northwestern Part of the Gyeonggi Massif (Soyeonpyeongdo and Ganghwado Areas), South Korea: Constrained From Whole‐Rock Geochemistry and Zircon U‐Pb‐Hf Isotopic Compositions

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract The Gyeonggi Massif is one of the major Precambrian basements in the Korean Peninsula where Paleoproterozoic orthogneiss and paragneiss were widely exposed. In this study, newly identified Rhyacian to Orosirian meta‐igneous rocks from the northwestern Gyeonggi Massif (Soyeonpyeongdo and Ganghwado areas) were investigated to elucidate their ...
Seung Hwan Lee, Deung‐Lyong Cho, Jeong‐Yeong Park, Sung Won Kim, Byung Choon Lee, Mingguo Zhai   +5 more
wiley   +1 more source

The metamorphic configuration of the Piaxtla high-pressure suite inferred from geological mapping and its metasedimentary rocks

Revista Mexicana de Ciencias Geológicas
The Piaxtla high-pressure suite (Acatlán Complex) in southern Mexico represents a part of an ancient subduction zone. This suite consists of slices of oceanic and continental affinity containing blueschist- and eclogite-facies relics. Geological mapping
Roberto Maldonado, Mariano Elías-Herrera, Guillermo Espejo-Bautista, Israel Ramírez-Serdán, Duban Esteban Gomez-Gomez, Angela Prado-Ordoñez, Consuelo Macías-Romo, José Luis Sánchez-Zavala   +7 more
doaj   +1 more source

The Difunta Correa metasedimentary sequence (NW Argentina): relict of a Neoproterozoic platform? — elemental and Sr-Nd isotope evidence

Revista Mexicana de Ciencias Geológicas, 2018
The Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina) in the Andean foreland is mainly formed by a Mesoproterozoic basement and an Ediacaran metasedimentary cover referred to as the Difunta Correa metasedimentary sequence.
Carlos Ramacciotti, César Casquet, Edgardo Baldo, Carmen Galindo   +3 more
doaj   +1 more source

Provenance of metasedimentary rocks of the Araxá group in the central Brasília belt

, 2022
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Navarro, Guillermo Rafael Beltran, Zanardo, Antenor, Montibeller, Cibele Carolina, Leme, Thaís Güitzlaf, da Conceição, Fabiano Tomazini, Valeriano, Claudio de Morisson   +5 more
openaire   +2 more sources

Distinct Groundwater Regimes in West Antarctic Sedimentary Basins Inferred From Magnetotelluric Imaging

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Subglacial sedimentary basins in Antarctica are hypothesized to modulate ice flow and biogeochemical cycles via groundwater and geothermal feedbacks, yet their properties remain poorly constrained. Here, we present a joint quantitative analysis of new magnetotelluric (MT) data acquired at Thwaites Glacier (TG) and WAIS Divide, alongside legacy
Siobhan F. Killingbeck, Bernd Kulessa, Rebecca Pearce, Alex Brisbourne, Louise Borthwick, Felipe Napoleoni, Sridhar Anandakrishnan, Martyn Unsworth, Atsuhiro Muto   +8 more
wiley   +1 more source

CO-EVOLUTION OF PROTEROZOIC CRATONIC FRAGMENTS IN WESTERN AND NORTHERN MONGOLIA

Геодинамика и тектонофизика, 2017
CAOB occupies a vast area that extends from the Urals to the Far East Asia and from the Siberian craton to the North China and Tarim cratons (Fig. 1, A).
Uyanga Bold, Francis Macdonald, Yukio Isozaki   +2 more
doaj   +1 more source

Building the Andean Crust at ∼35°S: Arc Geochemistry Reveals Cretaceous Thinning and Rapid Neogene Thickening

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Quantification of the timing and mechanisms of crustal thickening in Cordilleran orogenic hinterlands remains challenging. We address this in the Andes using whole‐rock geochemistry and zircon petrochronology from a >70 Myr volcanic record in the Tinguiririca valley of Chile (∼35° ${}^{\circ}$S), which captures a pivotal transition from ...
Chance B. Ronemus, Caden J. Howlett, Peter G. DeCelles, Barbara Carrapa, Andrés Echaurren, Matías Barrionuevo, Jesse G. Mosolf, Michelle L. Foley, Mihai N. Ducea   +8 more
wiley   +1 more source

Geology and geochronology of the Magdalena-Madera metamorphic core complex lower plate in the sierras Las Jarillas-El Potrero, northern Sonora

Revista Mexicana de Ciencias Geológicas
The area of sierras Las Jarillas-El Potrero in northern Sonora is interpreted as a portion of the lower plate of the Magdalena metamorphic core complex. Rock units that characterize this locality range in age from Jurassic to Eocene.
Teresita Sánchez Navarro, Michelle Vázquez Salazar, Carlos M. González-León, Luigi A. Solari, Anne E. Egger, Teresa Orozco-Esquivel, Margarita López-Martínez, Jonathan A. Nourse, Ofelia Pérez Arvizu, Rufino Lozano-Santacruz   +9 more
doaj   +1 more source

Why Does the Broken Hill Deposit Sit in Resistive Crust? Magnetotelluric Evidence for Metamorphic Decoupling of a World‐Class Mineral System

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The spatial association between electrical conductors and ore deposits underpins the widespread use of magnetotellurics (MT) in mineral exploration, yet not all mineral systems preserve a diagnostic conductive signature. Here, we present a high‐resolution MT study of the region hosting the world‐class Broken Hill Pb‐Zn‐Ag deposit (NSW ...
Yahya AlQahtani, Sinan Özaydın, Vasileios Chatzaras, Patrice F. Rey, Tiago Passos   +4 more
wiley   +1 more source

REE patterns of the metasedimentary rocks of the Land's End granite aureole (southwest England)

, 1982
Rock samples representing the various metasedimentary hornfelses of the Land's End granite aureole were collected and analysed for major and trace elements by X-ray fluorescence analysis and for rare-earth elements (REE) by instrumental neutron ...
Mitropoulos, P.
core   +2 more sources