Paleoproterozoic


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Related to Paleoproterozoic: Mesoproterozoic

Pa·le·o·prot·er·o·zo·ic

 (pā′lē-ō-prŏt′ər-ə-zō′ĭk, -prō′tər-)
adj.
Of, relating to, or being the oldest of the three eras of the Proterozoic Eon, from approximately 2.5 billion to 1.6 billion years ago, marked by the formation of stable continents and the appearance of cyanobacteria. See Table at geologic time.
n.
The Paleoproterozoic Era.
Translations
Paléoprotérozoïque
References in periodicals archive ?
The mineralisation is hosted in the Archean to Paleoproterozoic Riacho dos Machados group, of metasedimentary rocks.
Their topics include evaluating kinematic displacement rate effects of transient thermal processes in thrust belts using coupled thermo-mechanical finite-element models, the Paleozoic tectonic evolution of the western Blue Ridge in the southern Appalachians: a critical examination of long-standing conflicts in a poly-deformed system, the Paleoproterozoic to Triassic crustal evolution of Korea's Gyeonggi Massif and tectonic correlation with the North China craton, thrust loading as a mechanism for crustal recycling: an example from the Swakane Gneiss Cascades crystalline core in Washington State, and geologic and kinematic insights from far-traveled horses in the Brevard fault zone of the southern Appalachians.
Mt Denison is considered prospective for iron oxide copper-gold (IOCG) hosted mineralisation in an inlier of Paleoproterozoic rocks adjacent to the northeast margin of the Gawler Craton.
Nash, 2005: The paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis.
2012, Albitization and quartz dissolution in Paleoproterozoic metagranite, central Sweden--Implications for the disposal of spent nuclear fuel in a deep geological repository.
Strong remanent magnetization in pyrrhotite: A structurally controlled example from the Paleoproterozoic Tanmi orogenic gold province, northern Australia.
Low oxygen isn't the boring billion's only defining feature--its changeless nature stands in marked contrast to the two dynamic eras that came before and after: the Paleoproterozoic and the Neoproterozoic.
Two grains are of Mesoproterozoic age (1112 [+ or -] 25 and 1429 [+ or -] 30 Ma) and a significant Paleoproterozoic grain population with a cluster (9 analyses) ranges in age from ~1900 to 2140 Ma.
The two oldest inherited zircons are Paleoproterozoic, 1950 and 1975 Ma (spot L24-5 and L20-35, respectively; Table 5), and correspond to stubby zircon crystals.
He covers the tectonic subdivision of the craton, Archaen geology of the eastern and western blocks, the paleoproterozoic amalgamation of the craton, and its mesoproterozoic accretion and meso-neoproterozoic extension and rifting.