Results 81 to 90 of about 5,596 (229)

Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: Evolution of Neoarchaean supracrustal belts at the northern margin of the North Atlantic Craton, West Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2006
The Archaean North Atlantic Craton of West Greenland collided at c. 1.9 Ga with a lesser-known Archaean craton to the north, to form the Nagssugtoqidian orogen.
Stensgaard, Bo Møller, Keiding, Marie, Hollis, Julie A, van Gool, Jeroen A.M., Garde, Adam A.   +4 more
doaj  

The Archean Rio das Velhas greenstone belt revisited: new insights into the stratigraphy

Journal of the Geological Survey of Brazil, 2020
The Neoarchean Rio das Velhas greenstone belt (RVGB), southeast Brazil, contains major tectonic and stratigraphic discontinuities that allow its division into three fault-bound tectonostratigraphic blocks named Santa Bárbara, Nova Lima-Caeté and São ...
Joanna Araújo, Raianny Ferreira, Frederico Freitas, Joana Magalhães   +3 more
doaj   +1 more source

Modeling the Anthropogenic Effects on Watershed Evolution Trajectory: An Example From the Chestatee River in Northern Georgia, USA

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.
Abstract Human activities shape erosion dynamics and landscape evolution, making effective modeling approaches essential for understanding these impacts. This study utilizes landscape evolution models with a streamlined parameterization process to evaluate the anthropogenic effects on the erosional trajectory of the Chestatee River watershed in ...
Christopher E. Sheehan, Mark D. Behn, Noah P. Snyder, Travis A. Dahl, Ilan Valencius   +4 more
wiley   +1 more source

Geological Histories from 4372 Ma to 26 Ma Recorded in Siliciclastic Metasedimentary Rocks from the Central Yilgarn Craton [PDF]

, 2012
This study presents an investigation of detrital, metamorphic, and hydrothermal minerals from siliciclastic metasedimentary rocks of the Illaara and Maynard Hills greenstone belts, central Yilgarn Craton. This research assesses how 4.3 to 3.0 Ga detrital
Thern, Eric Royal
core  

Microbial Ecology of the Heterogeneous Terrestrial Deep Biosphere Over 4 years in the Deep Mine Microbial Observatory (DeMMO)

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract The deep continental subsurface hosts a large, diverse, and poorly characterized microbiome. The geochemistry and microbiology of deep subsurface sites are closely linked and influenced by geological, hydrological, and anthropogenic factors. The Deep Mine Microbial Observatory (DeMMO; Lead, SD) was established in 2015 to provide stable portals
Magdalena R. Osburn, Caitlin P. Casar, Bradley S. Stevenson, Matthew Selensky, Brittany Kruger, Lily M. Momper, Theodore M. Flynn, Jan P. Amend   +7 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

Protracted High‐Grade Metamorphism and Slow Cooling in the Adirondacks Recalibrate Neoproterozoic Global Paleogeography

Tectonics, Volume 45, Issue 6, June 2026.
Abstract The assembly and breakup of the supercontinent Rodinia set the stage for Earth system evolution through the Neoproterozoic Era. Laurentia, the central craton in Rodinia, lacks well‐dated paleomagnetic poles between ca. 990 Ma and 780 Ma. In this study, we develop new U‐Pb petrochronology and thermochronology data sets from zircon, garnet ...
Yiming Zhang, Eben Blake Hodgin, Mark D. Schmitz, Darin M. Schwartz, Michael T. Mohr, James L. Crowley, Nicholas L. Swanson‐Hysell   +6 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

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