Phanerozoic


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Related to Phanerozoic: Phanerozoic eon, Paleozoic, Proterozoic

Phanerozoic

the period of time from the beginning of the CAMBRIAN until the present, i.e. the PALAEOZOIC, MESOZOIC and CENOZOIC eras.
References in periodicals archive ?
Uncovering the history of the Permian, and in some aspects, the Triassic, has historically proven more challenging than of any of the other geological periods of the Phanerozoic.
Laznicka, P., 1985, Empirical metallogeny, depositional environments, lithologic associations and metallic ores, Volume 1, Phanerozoic environments, associations and deposits: Developments in economic geology 19: Elsevier Science, New York, 1758 p.
(2001): A critic of Phanerozoic climatic models involving changes in the C[O.sup.2] content of the atmosphere.
The record of climate variations during the Phanerozoic (Fig.
In: Walliser, O., (ed.): Global events and event stratigraphy in the Phanerozoic: 285-312.
Although ultimate causes are still being debated (e.g., Courtillot and Renne, 2003), the two largest Phanerozoic extinction events, the Permo-Triassic and K-T boundaries, overlap in time or immediately follow the extrusion of some of the largest continental flood basalt sequences, the Siberian (e.g., Kamo et al., 2003) and Deccan (Hofmann et al., 2000) traps, respectively.
The lower part of the Upper Ordovician contains numerous altered volcanic ash layers in the Baltoscandian area, amongst them the unusually thick socalled Kinnekulle Bentonite, which represents one of the largest eruptions that has ever taken place during the Phanerozoic (Huff et al.
The K/Pg boundary marks one of the largest mass extinctions of the Phanerozoic, but survival rates of different groups of marine organisms varied with habitat (Peryt et al, 2002).
As a result of the excellent observed reflectivity, a number of major reflection styles and geometries can be discerned, and compare favorably with orogenic geometries seen in Phanerozoic orogens (Beaumont and Quinlan, 1994).
Negative carbon isotope excursions in the Phanerozoic often reflect short-term events and their causes and significance are debated, because this would require a fast and volumetrically substantial input of isotopically light carbon into the ocean-atmospheric system.