Geochronology/Radiocarbon dating/Quiz

Radiocarbon dating geochronology is a lecture from the school of geology.

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Quiz
{Complete the text: The produced by { fast (i) } neutrons in the reaction 16O(n,3He)14C in the { stratosphere (i) } depends on oxygen composing 28 % of the { atmosphere (i) } ; i.e. 25-28 % more  is likely to be produced because fast neutrons are much more plentiful in the stratosphere.
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{The two million year Quaternary period is the time of recognizable? { humans (i) }
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{Yes or No, Radiocarbon dating is a geochronology and archaeology technique that benefits from radiocarbon capture in the atmosphere and spallation creation of radiocarbon below the atmosphere especially and perhaps in the atmosphere as well. + Yes - No
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{Geochronology is the science of applying dates in the past to? { rocks (i) }
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{Excess 14C in Cariaco Basin sediments indicates a slowing in thermohaline? { circulation (i) }
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{Complete the text: Match up the geological time unit with the title: Holocene - A Gelasian - B Paleogene - C Triassic - D Devonian - E Archean - F Precambrian - G period of the Mesozoic { D (i) }. supereon { G (i) }. age { B (i) }. eon { F (i) }. epoch { A (i) }. period of the Paleozoic { E (i) } period { C (i) }.
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{Orbitally forced cyclicity includes? - Jupiter-Venus conjunctions + chemical and physical proxies from sedimentary rock sequences + palaeoclimatic studies + marine Cenozoic sequences - meteorite impacts from the asteroid belt + spectral analysis of the magnetic susceptibility (MS) record
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{The GSSP section near El Kef contains? + one main feature that allows for a direct correlation of this marine section with continental sections + the base of the Danian Stage + the base GSSP for the Paleogene + the base GSSP for the Tertiary + the base GSSP for the Paleocene + the Ir anomaly at the base of the Boundary Clay + the base GSSP for the Cenozoic
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{Which of the following is out of reverse geochronological order? + Pleistocene - Holocene - Pliocene - Miocene - Oligocene - Eocene
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{What phenomena may be associated with K/Pg boundary? + clay in the Geulhemmergroeve tunnels near Geulhem, The Netherlands + the Badlands near Drumheller, Alberta + the cliffs at Stevns - an extensive osmium layer - traces of Fe-Ni alloys + Trinidad Lake State Park, Colorado, USA
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{True or False, The first suggestion that appreciable might be produced in situ in polar ice was made by Fireman and Norris, who studied  in CO2 extracted from both accumulation and ablation samples. In some ablation samples they observed activities between four and six times higher than those expected due to trapped atmospheric CO2. + TRUE - FALSE
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{The Holocene starts at ~11,700 b2k and extends to the? { present (i) }
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{Which geological phenomena are associated with the Subboreal? + period around 850-760 BC - characterized by an increase in solar activity + a sharp increase of Δ 14C + characterized by a decrease in solar activity - preceded by the Subatlantic + solar forcing of climate change
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{The ancient history period dates from around 8,000 to 3,000? { b2k (i) }
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{Complete the text: The Pre-boreal period marks the transition from the { cold (i) } climate of the Late-glacial to the { warmer (i) } climate of the { Post-glacial (i) } time.
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{The Chalcolithic is often referred to as the Copper? { Age (i) }
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{Which geochemical phenomena are associated with the Younger Dryas? + during the Last Glacial Termination - an abrupt return to interglacial conditions + an abrupt return to glacial-like conditions + summer (1.May to 30.September) temperature dropped 5-6°C during less than two centuries - transition to a warmer, interglacial climate + indicated by changes in Neogloboquadrina pachyderma
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Hypotheses

 * 1) Tephra layers may be the best geochronometer.