JSTOR Daily

Comparative Geochemistry of Pleistocene and Paleoproterozoic (Huronian) Glaciogenic Laminated Deposits: Relevance to Crustal and Atmospheric Composition in the Last 2.3 Ga

Abstract Comparison of the major and trace element geochemistry of glaciogenic laminated deposits of Pleistocene and Paleoproterozoic age from an area north of Lake Huron, Ontario, has revealed ...
Nature

Paleoproterozoic high-pressure metamorphism in the northern North China Craton and implications for the Nuna supercontinent

Grt-websterite contains the best evidence of HP metamorphism in the area; we chose the least retrogressed sample (HS12) to constrain the pressure–temperature (P–T) path (Table 1), and mineral ...
JSTOR Daily

Paleoproterozoic Mafic-Ultramafic Magmatism in the Northern Borborema Province, Northeast Brazil

This is a preview. Log in through your library . Abstract Mafic-ultramafic intrusions form a 32-km-long NE-SW-trending array within Paleoproterozoic arc-related calc-alkaline plutonic rocks of the Rio ...
EurekAlert!

Geochronology and geochemistry of mafic rocks in the Wutai area, North China: Constraints on the latest Neoarchean–Paleoproterozoic tectonic setting of the Trans-North China ...

Schematic tectonic evolution model for the Wutai Complex during Late Archean (a) Subduction setting (~2543 Ma); shows subduction-related metasomatic agents which influenced the lithological and ...