Pleistocene Series


Pleistocene Series

      worldwide division of rocks deposited during the Pleistocene Epoch (1,600,000 to 10,000 years ago). It overlies rocks from the Pliocene Epoch (5.3 to 1.6 million years ago) and is itself overlain by rocks of the Holocene Series; together these two latter divisions make up the Quaternary System. By international agreement, the global stratotype section and point for the base of the Pleistocene Series coincides with the base of marine claystones that overlie the “e” marker bed in the Vrica section in Calabria, Italy. This bed, a distinctive stratum of sapropelic rocks (i.e., those containing carbon-rich material from a swampy environment), is 1.9 m (6.25 feet) thick and is very conspicuous in the Vrica section's massive cliffs, which lie 4 km (2.5 miles) south of Crotone on the Marchesato Peninsula of Calabria.

      The most significant fossil found in Pleistocene strata is the mollusk Arctica islandica. The base of the Pleistocene is marked by the last occurrence of the nannoplankton Calcidiscus macintyrei and of the foraminiferan Globigerinoides obliquus extremus, as well as by the first appearance of the tiny plankton Gephyrocapsa oceanica. More importantly, the Pleistocene's boundary with the Pliocene occurs just above the position of the magnetic reversal that marks the Olduvai Normal Polarity Subzone, thus allowing the worldwide correlation of Pleistocene rocks with reference to the magneto-stratigraphic timescale.

* * *


Universalium. 2010.

Look at other dictionaries:

  • Pleistocene Epoch — Earlier and longer of the two epochs that constitute the Quaternary Period. The Pleistocene began с 1.8 million years ago and ended с 10,000 years ago. It was preceded by the Pliocene Epoch of the Tertiary Period and followed by the Holocene… …   Universalium

  • Pleistocene Rewilding — promotes the reintroduction of descendants of Pleistocene megafauna, or their close ecological equivalents. Toward the end of the Pleistocene era, between roughly 13,000 to 10,000 years ago, nearly all megafauna of South, Central, North America… …   Wikipedia

  • Pleistocene — [plīs′tə sēn΄] adj. [< Gr pleistos, most, superl. of polys, much (see POLY ) + CENE] [sometimes p ] designating or of the first geologic epoch of the Quaternary Period, characterized by a series of advancing and retreating continental glaciers …   English World dictionary

  • Pleistocene — adjective Etymology: Greek pleistos most + International Scientific Vocabulary cene; akin to Greek pleiōn more Date: 1839 of, relating to, or being the earlier epoch of the Quaternary or the corresponding series of rocks see geologic time table • …   New Collegiate Dictionary

  • Pleistocene — /pluy steuh seen /, Geol. adj. 1. noting or pertaining to the epoch forming the earlier half of the Quaternary Period, beginning about two million years ago and ending 10,000 years ago, characterized by widespread glacial ice and the advent of… …   Universalium

  • Pleistocene — Pleis•to•cene [[t]ˈplaɪ stəˌsin[/t]] adj. 1) gel of or pertaining to the geologic epoch forming the earlier half of the Quaternary Period, beginning about two million years ago and ending ten thousand years ago, the time of the last Ice Age and… …   From formal English to slang

  • Pleistocene —    An epoch of the Quaternary period, after the Pliocene of the Tertiary and before the Holocene; also the corresponding worldwide series of rocks. It began two million years ago and lasted until the start of the Holocene some 8,000 years ago [1] …   Lexicon of Cave and Karst Terminology

  • Pleistocene —    The epoch of the Quaternary Period of geologic time (from about 10 to 12 thousand to 1.6 million years ago), following the Pliocene Epoch and preceding the Holocene also the corresponding (time stratigraphic) series of earth materials.    SW & …   Glossary of landform and geologic terms

  • Pleistocene — /ˈplaɪstəsin / (say pluystuhseen) adjective 1. relating to the earlier division of the Quaternary period or system (the glacial epoch or ice age). –noun 2. the epoch or series of the Quaternary that follows Pliocene and precedes the Holocene.… …   Australian English dictionary

  • Middle Pleistocene — Subdivisions of the Quaternary Period System Series Stage Age (Ma) Quaternary Holocene 0–0.0117 Pleistocene Tarantian (Upper) 0.0117–0.126 …   Wikipedia