Geochronology/Dye 3/Quiz

Dye 3 geochronology is a lecture from the school of geology.

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Quiz
{The two million year Quaternary period is the time of recognizable? { humans (i) }
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{Yes or No, Dye 3 is an ice core site and previously part of the Distant Early Warning (DEW) line, located at 65° 11' N 43° 49 W, 2480 masl in Greenland. + Yes - No
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{Geochronology is the science of applying dates in the past to? { rocks (i) }
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{Yes or No, An ice core is a core sample from the accumulation of snow and ice that has re-crystallized and trapped air bubbles over many years. + Yes - No
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{The Palaeozoic, Mesozoic and Cenozoic are eras of the? { Phanerozoic (i) } eon.
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{Yes or No, The ice in the current Greenland ice sheet is as old as 110,000 years. + Yes - No
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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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{Yes or No, The unconfined ice sheet does not reach the sea along a broad front anywhere in Greenland, so that no large ice shelves occur. + Yes - No
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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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{Yes or No, Dye-2 and 3 were among 58 Distant Early Warning (DEW) Line radar stations built by the United States of America (USA) between 1955 and 1960 across Alaska, Canada, Greenland and Iceland. + Yes - No
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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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{Yes or No, Although available GISP data gathered over the earlier seven years, pointed to north-central Greenland as the optimum site location for the first deep drilling, financial restrictions forced the selection of the logistically convenient Dye-3 location. + Yes - No
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{Which of the following is out of reverse geochronological order? + Pleistocene - Holocene - Pliocene - Miocene - Oligocene - Eocene
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{Yes or No, In 1981 at a depth of 1785 m dust and conductivity measurements indicated the beginning of ice from the last glaciation at Dye 3. + Yes - No
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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, In the Greenland ice cores, the Pleistocene–Holocene transition is chronologically constrained between two clearly defined tephra horizons. + TRUE - FALSE
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{The Holocene starts at ~11,700 b2k and extends to the? { present (i) }
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{Yes or No, Coring continued and on August 10, 1981, bedrock was reached at a depth of 2038 m at Dye 3. + Yes - No
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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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{Yes or No, The borehole to 2038 m is 41.5 km east of the local ice divide of the south Greenland ice sheet at Dye 3. + Yes - No
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{The ancient history period dates from around 8,000 to 3,000? { b2k (i) }
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{Yes or No, The Dye 3 cores were part of the GISP and, at 2037 meters, the final Dye 3 1979 core was the deepest of the 20 ice cores recovered from the Greenland ice sheet. + Yes - No
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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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{Yes or No, At 500 m above bedrock, the ice velocity is ~10 ma−1, 61.2° true at Dye 3. + Yes - No
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{The Chalcolithic is often referred to as the Copper? { Age (i) }
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{Yes or No, The ice upstream and downstream from Dye 3 is flowing downhill (-) on ~0.48 % mean slope. + Yes - No
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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.