Results 81 to 90 of about 28,387 (229)

The carbon release triggered by 1.32 Ga sill emplacement and its potential environmental implications

open access: yesFrontiers in Earth Science
Magmatic activity is one of the important pathways for the delivery of deep Earth carbon to the surface. The massive carbon release in this process can have significant impacts on atmospheric-oceanic environment.
Chaokun Zhang   +7 more
doaj   +1 more source

Late Cenozoic Sediment Provenance in the Northern Canterbury Basin, Aotearoa New Zealand

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.
Late Cenozoic strata of the northern Canterbury Basin record uplift and erosion of mountain ranges adjacent to the transition from oblique subduction to strike‐slip on the Australian–Pacific plate boundary. Using the provenance of conglomerate clasts and sandstone samples, we reconstruct sediment transport pathways and, by inference, exhumation and ...
Matthew O. Parker   +5 more
wiley   +1 more source

2011 Precambrian Field Camp Capstone Mapping Projects Map

open access: yes, 2011
This map shows the locations of the capstone mapping projects for the 2011 Precambrian Field Camp sponsored by the Precambrian Research Center. It also indicates who participated in which project.University of Minnesota Duluth.
University of Minnesota Duluth. Precambrian Research Center
core  

New approaches to lithological and stratigraphic research and mapping of the early Precambrian complexes (using an example of the Paleoproterozoic and Archean structures of Keivy, Kola Peninsula)

open access: yesVestnik MGTU
Previously, the team of authors proposed a new method for the comparative analysis of geological objects. Its foundation is an assessment of the proximity of statistically significant petrogeochemical characteristics.
Kozlov N. E.   +2 more
doaj   +1 more source

The Earth's Greatest Porous Media

open access: yesPerspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract How deeply does modern meteoric water circulate into the continental crust? How deep is the Earth's Critical Zone (CZ), the top layer of the continental lithosphere that co‐evolves with the atmosphere, hydrosphere, and biosphere, extending from vegetation canopy down to fresh bedrock and the base of active groundwater circulation?
Ying Fan   +3 more
wiley   +1 more source

2008 Precambrian Field Camp Capstone Mapping Projects Map

open access: yes, 2008
This map shows the locations of the capstone mapping projects for the 2008 Precambrian Field Camp sponsored by the Precambrian Research Center. It also indicates who participated in which project.University of Minnesota Duluth.
University of Minnesota Duluth. Precambrian Research Center
core  

Potassium metasomatism of Precambrian paleosols

open access: yes, 2015
FAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOIndependent of substratum composition, ancient regoliths formed by subaerial weathering are characterized by accumulation of K and other alkaline elements.
Alexey A. Novoselov   +1 more
core   +1 more source

Trace element composition of silicate minerals from Kunashak Meteorite (L6)

open access: yesЗаписки Горного института
Major (EPMA) and trace (SIMS) element geochemistry in the silicate minerals (olivine, pyroxene and plagioclase) of Kunashak equilibrated ordinary chondrite (L6) is described. No variations in the major element concentrations of the silicate minerals have
Kristina G. Sukhanova, Olga L. Galankina
doaj  

Chervurt formation of the Kolmozero-Voron'ya belt and Keivy domain: A geodynamic reference point for spatial and temporal heterogeneity during the formation of the ancient median massif

open access: yesVestnik MGTU
The paper considers the possible correlation of the rocks of the Chervurt Formation in the Kolmozero-Voron'ya zone with its constituent supracrustal complexes and the formations of the adjacent Keivy domain, as well as the role that metasedimentary rocks
Kozlov N. E., Sorokhtin N. O.
doaj   +1 more source

Terrestrial inputs and in‐lake processes shape dissolved organic matter along a permafrost gradient

open access: yesLimnology and Oceanography, Volume 71, Issue 11, November 2026.
Abstract Northern permafrost landscapes store large amounts of organic carbon that can enter lakes as dissolved organic matter (DOM), but links among shoreline terrestrial sources, lake‐water DOM composition, and catchment configuration remain uncertain in low‐precipitation Shield landscapes. We combined shoreline soil‐porewater and lake‐water sampling
Ryan H. S. Hutchins   +8 more
wiley   +1 more source

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